/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:20:34,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:20:34,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:20:34,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 16:20:34,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:20:34,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:20:34,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:20:34,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 16:20:34,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:20:34,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:20:34,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:20:34,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:20:34,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:20:34,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:20:34,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:20:34,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:20:34,693 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:20:34,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:20:34,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:20:34,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:20:34,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:20:34,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:20:34,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:20:34,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:20:34,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:20:34,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:20:34,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:20:34,921 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:20:34,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-01 16:20:34,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f5d774/08f9255106a545ff817810993abc0677/FLAG8e6f1ad2a [2022-03-01 16:20:35,366 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:20:35,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-01 16:20:35,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f5d774/08f9255106a545ff817810993abc0677/FLAG8e6f1ad2a [2022-03-01 16:20:35,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f5d774/08f9255106a545ff817810993abc0677 [2022-03-01 16:20:35,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:20:35,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:20:35,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:20:35,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:20:35,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:20:35,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:35,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aecfdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35, skipping insertion in model container [2022-03-01 16:20:35,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:35,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:20:35,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:20:35,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-03-01 16:20:35,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:20:35,970 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:20:35,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-03-01 16:20:35,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:20:35,991 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:20:35,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35 WrapperNode [2022-03-01 16:20:35,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:20:35,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:20:35,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:20:35,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:20:35,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,017 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-03-01 16:20:36,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:20:36,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:20:36,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:20:36,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:20:36,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:20:36,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:20:36,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:20:36,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:20:36,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (1/1) ... [2022-03-01 16:20:36,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:20:36,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:36,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 16:20:36,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 16:20:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:20:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:20:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:20:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:20:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:20:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:20:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:20:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:20:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:20:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:20:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:20:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:20:36,121 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:20:36,168 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:20:36,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:20:36,320 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:20:36,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:20:36,326 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 16:20:36,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:20:36 BoogieIcfgContainer [2022-03-01 16:20:36,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:20:36,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:20:36,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:20:36,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:20:36,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:20:35" (1/3) ... [2022-03-01 16:20:36,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2bf507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:20:36, skipping insertion in model container [2022-03-01 16:20:36,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:20:35" (2/3) ... [2022-03-01 16:20:36,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2bf507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:20:36, skipping insertion in model container [2022-03-01 16:20:36,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:20:36" (3/3) ... [2022-03-01 16:20:36,335 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-03-01 16:20:36,339 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:20:36,339 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:20:36,339 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:20:36,339 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:20:36,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:20:36,422 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 16:20:36,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:20:36,464 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 16:20:36,464 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 16:20:36,475 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 94 transitions, 204 flow [2022-03-01 16:20:36,544 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:36,568 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:36,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:36,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395040, now seen corresponding path program 1 times [2022-03-01 16:20:36,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:36,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950664204] [2022-03-01 16:20:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:36,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:37,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:37,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950664204] [2022-03-01 16:20:37,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950664204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:37,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:37,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:37,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773248444] [2022-03-01 16:20:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:37,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:37,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:37,411 INFO L87 Difference]: Start difference. First operand has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:38,360 INFO L93 Difference]: Finished difference Result 1343 states and 3319 transitions. [2022-03-01 16:20:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:20:38,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:38,390 INFO L225 Difference]: With dead ends: 1343 [2022-03-01 16:20:38,390 INFO L226 Difference]: Without dead ends: 1210 [2022-03-01 16:20:38,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:20:38,395 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:38,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2241 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-01 16:20:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2022-03-01 16:20:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 2.486556808326106) internal successors, (2867), 1153 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2867 transitions. [2022-03-01 16:20:38,467 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2867 transitions. Word has length 79 [2022-03-01 16:20:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:38,467 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2867 transitions. [2022-03-01 16:20:38,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2867 transitions. [2022-03-01 16:20:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:38,471 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:38,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:38,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:20:38,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:38,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1423500610, now seen corresponding path program 2 times [2022-03-01 16:20:38,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:38,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769952427] [2022-03-01 16:20:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:38,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:38,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769952427] [2022-03-01 16:20:38,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769952427] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:38,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:38,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:38,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438985675] [2022-03-01 16:20:38,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:38,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:38,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:38,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:38,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:38,910 INFO L87 Difference]: Start difference. First operand 1154 states and 2867 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:39,797 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-03-01 16:20:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:20:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:39,802 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:20:39,802 INFO L226 Difference]: Without dead ends: 1237 [2022-03-01 16:20:39,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:20:39,803 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:39,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2439 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-01 16:20:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1158. [2022-03-01 16:20:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4840103716508213) internal successors, (2874), 1157 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2874 transitions. [2022-03-01 16:20:39,832 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2874 transitions. Word has length 79 [2022-03-01 16:20:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:39,834 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2874 transitions. [2022-03-01 16:20:39,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2874 transitions. [2022-03-01 16:20:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:39,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:39,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:39,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:20:39,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:39,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2137737888, now seen corresponding path program 3 times [2022-03-01 16:20:39,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:39,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523353252] [2022-03-01 16:20:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:40,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:40,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523353252] [2022-03-01 16:20:40,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523353252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:40,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:40,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:40,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807384767] [2022-03-01 16:20:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:40,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:40,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:40,317 INFO L87 Difference]: Start difference. First operand 1158 states and 2874 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:41,230 INFO L93 Difference]: Finished difference Result 1303 states and 3212 transitions. [2022-03-01 16:20:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:20:41,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:41,235 INFO L225 Difference]: With dead ends: 1303 [2022-03-01 16:20:41,235 INFO L226 Difference]: Without dead ends: 1190 [2022-03-01 16:20:41,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:20:41,237 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 277 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:41,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2614 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:41,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-01 16:20:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1146. [2022-03-01 16:20:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.48471615720524) internal successors, (2845), 1145 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2845 transitions. [2022-03-01 16:20:41,257 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2845 transitions. Word has length 79 [2022-03-01 16:20:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:41,257 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2845 transitions. [2022-03-01 16:20:41,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2845 transitions. [2022-03-01 16:20:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:41,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:41,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:41,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:20:41,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1686538594, now seen corresponding path program 4 times [2022-03-01 16:20:41,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:41,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403905489] [2022-03-01 16:20:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:41,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:41,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403905489] [2022-03-01 16:20:41,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403905489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:41,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:41,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:41,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468330675] [2022-03-01 16:20:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:41,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:41,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:41,685 INFO L87 Difference]: Start difference. First operand 1146 states and 2845 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:42,687 INFO L93 Difference]: Finished difference Result 1353 states and 3337 transitions. [2022-03-01 16:20:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:20:42,687 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:42,692 INFO L225 Difference]: With dead ends: 1353 [2022-03-01 16:20:42,692 INFO L226 Difference]: Without dead ends: 1255 [2022-03-01 16:20:42,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:20:42,693 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 266 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:42,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2743 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:20:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-01 16:20:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1170. [2022-03-01 16:20:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.4833190761334474) internal successors, (2903), 1169 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-03-01 16:20:42,714 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-03-01 16:20:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:42,714 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-03-01 16:20:42,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-03-01 16:20:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:42,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:42,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:42,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:20:42,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:42,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash -370005702, now seen corresponding path program 5 times [2022-03-01 16:20:42,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:42,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696368448] [2022-03-01 16:20:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:43,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:43,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696368448] [2022-03-01 16:20:43,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696368448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:43,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:43,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:43,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954392264] [2022-03-01 16:20:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:43,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:43,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:43,097 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:44,010 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-03-01 16:20:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:20:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:44,015 INFO L225 Difference]: With dead ends: 1321 [2022-03-01 16:20:44,016 INFO L226 Difference]: Without dead ends: 1170 [2022-03-01 16:20:44,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:20:44,020 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 265 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:44,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2713 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:44,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-01 16:20:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1130. [2022-03-01 16:20:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4809565987599647) internal successors, (2801), 1129 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2801 transitions. [2022-03-01 16:20:44,046 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2801 transitions. Word has length 79 [2022-03-01 16:20:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:44,047 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2801 transitions. [2022-03-01 16:20:44,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2801 transitions. [2022-03-01 16:20:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:44,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:44,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:44,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 16:20:44,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1723463452, now seen corresponding path program 6 times [2022-03-01 16:20:44,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:44,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140093458] [2022-03-01 16:20:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:44,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:44,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140093458] [2022-03-01 16:20:44,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140093458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:44,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:44,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:20:44,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975073445] [2022-03-01 16:20:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:44,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:44,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:44,452 INFO L87 Difference]: Start difference. First operand 1130 states and 2801 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:45,772 INFO L93 Difference]: Finished difference Result 1388 states and 3423 transitions. [2022-03-01 16:20:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:20:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:45,776 INFO L225 Difference]: With dead ends: 1388 [2022-03-01 16:20:45,777 INFO L226 Difference]: Without dead ends: 1290 [2022-03-01 16:20:45,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:20:45,778 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 310 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:45,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2749 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:20:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-01 16:20:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2022-03-01 16:20:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-01 16:20:45,801 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-01 16:20:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:45,801 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-01 16:20:45,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-01 16:20:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:45,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:45,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:45,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 16:20:45,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1254970952, now seen corresponding path program 7 times [2022-03-01 16:20:45,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:45,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34052270] [2022-03-01 16:20:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:46,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:46,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34052270] [2022-03-01 16:20:46,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34052270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:46,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:46,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:20:46,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976156286] [2022-03-01 16:20:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:46,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:46,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:46,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:46,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:46,154 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:47,290 INFO L93 Difference]: Finished difference Result 1344 states and 3306 transitions. [2022-03-01 16:20:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:20:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:47,303 INFO L225 Difference]: With dead ends: 1344 [2022-03-01 16:20:47,303 INFO L226 Difference]: Without dead ends: 1209 [2022-03-01 16:20:47,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:20:47,305 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 312 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:47,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2740 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:20:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-03-01 16:20:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1134. [2022-03-01 16:20:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4783759929390996) internal successors, (2808), 1133 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-03-01 16:20:47,328 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-03-01 16:20:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-03-01 16:20:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-03-01 16:20:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:47,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:47,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 16:20:47,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1909481314, now seen corresponding path program 8 times [2022-03-01 16:20:47,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:47,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879015332] [2022-03-01 16:20:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:47,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:47,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879015332] [2022-03-01 16:20:47,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879015332] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:47,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:47,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:47,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836975794] [2022-03-01 16:20:47,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:47,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:47,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:47,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:47,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:47,676 INFO L87 Difference]: Start difference. First operand 1134 states and 2808 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:48,526 INFO L93 Difference]: Finished difference Result 1332 states and 3273 transitions. [2022-03-01 16:20:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:20:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:48,530 INFO L225 Difference]: With dead ends: 1332 [2022-03-01 16:20:48,530 INFO L226 Difference]: Without dead ends: 1162 [2022-03-01 16:20:48,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:20:48,531 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 302 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:48,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2526 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-01 16:20:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1122. [2022-03-01 16:20:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 2.4790365744870653) internal successors, (2779), 1121 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2779 transitions. [2022-03-01 16:20:48,550 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2779 transitions. Word has length 79 [2022-03-01 16:20:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:48,551 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2779 transitions. [2022-03-01 16:20:48,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2779 transitions. [2022-03-01 16:20:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:48,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:48,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:48,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 16:20:48,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1410763300, now seen corresponding path program 9 times [2022-03-01 16:20:48,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:48,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102260941] [2022-03-01 16:20:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:48,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:48,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:48,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102260941] [2022-03-01 16:20:48,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102260941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:48,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:48,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:20:48,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628599451] [2022-03-01 16:20:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:48,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:48,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:48,928 INFO L87 Difference]: Start difference. First operand 1122 states and 2779 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:51,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:20:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:52,070 INFO L93 Difference]: Finished difference Result 1466 states and 3579 transitions. [2022-03-01 16:20:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:20:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:52,074 INFO L225 Difference]: With dead ends: 1466 [2022-03-01 16:20:52,074 INFO L226 Difference]: Without dead ends: 1368 [2022-03-01 16:20:52,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2231, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:20:52,075 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 367 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:52,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2802 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:20:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2022-03-01 16:20:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1146. [2022-03-01 16:20:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.481222707423581) internal successors, (2841), 1145 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2841 transitions. [2022-03-01 16:20:52,092 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2841 transitions. Word has length 79 [2022-03-01 16:20:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:52,092 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2841 transitions. [2022-03-01 16:20:52,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2841 transitions. [2022-03-01 16:20:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:52,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:52,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:52,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 16:20:52,094 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2125000578, now seen corresponding path program 10 times [2022-03-01 16:20:52,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:52,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981107671] [2022-03-01 16:20:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:52,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:52,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981107671] [2022-03-01 16:20:52,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981107671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:52,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:52,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:20:52,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067068137] [2022-03-01 16:20:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:52,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:52,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:52,416 INFO L87 Difference]: Start difference. First operand 1146 states and 2841 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:53,522 INFO L93 Difference]: Finished difference Result 1370 states and 3365 transitions. [2022-03-01 16:20:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:20:53,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:53,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:53,526 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:20:53,526 INFO L226 Difference]: Without dead ends: 1219 [2022-03-01 16:20:53,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:20:53,527 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 333 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:53,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2771 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:20:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-01 16:20:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1146. [2022-03-01 16:20:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.477729257641921) internal successors, (2837), 1145 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-03-01 16:20:53,544 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-03-01 16:20:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:53,544 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-03-01 16:20:53,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-03-01 16:20:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:53,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:53,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 16:20:53,546 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1359290628, now seen corresponding path program 11 times [2022-03-01 16:20:53,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:53,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404661777] [2022-03-01 16:20:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:53,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:53,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404661777] [2022-03-01 16:20:53,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404661777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:53,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:53,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:20:53,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519301573] [2022-03-01 16:20:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:53,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:20:53,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:20:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:20:53,909 INFO L87 Difference]: Start difference. First operand 1146 states and 2837 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:54,772 INFO L93 Difference]: Finished difference Result 1330 states and 3255 transitions. [2022-03-01 16:20:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:20:54,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:54,776 INFO L225 Difference]: With dead ends: 1330 [2022-03-01 16:20:54,776 INFO L226 Difference]: Without dead ends: 1134 [2022-03-01 16:20:54,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:20:54,777 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 286 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:54,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2385 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-03-01 16:20:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1106. [2022-03-01 16:20:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 2.475113122171946) internal successors, (2735), 1105 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 2735 transitions. [2022-03-01 16:20:54,792 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 2735 transitions. Word has length 79 [2022-03-01 16:20:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:54,792 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 2735 transitions. [2022-03-01 16:20:54,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 2735 transitions. [2022-03-01 16:20:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:54,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:54,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:54,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 16:20:54,795 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:54,795 INFO L85 PathProgramCache]: Analyzing trace with hash 713450852, now seen corresponding path program 12 times [2022-03-01 16:20:54,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:54,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49270401] [2022-03-01 16:20:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:54,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:55,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:55,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49270401] [2022-03-01 16:20:55,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49270401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:55,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:55,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:20:55,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080695729] [2022-03-01 16:20:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:55,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:20:55,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:20:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:20:55,171 INFO L87 Difference]: Start difference. First operand 1106 states and 2735 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:56,501 INFO L93 Difference]: Finished difference Result 1433 states and 3528 transitions. [2022-03-01 16:20:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:20:56,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:56,506 INFO L225 Difference]: With dead ends: 1433 [2022-03-01 16:20:56,506 INFO L226 Difference]: Without dead ends: 1335 [2022-03-01 16:20:56,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=2836, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:20:56,507 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 344 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:56,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 3226 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:20:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-03-01 16:20:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2022-03-01 16:20:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-01 16:20:56,533 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-01 16:20:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:56,533 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-01 16:20:56,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-01 16:20:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:56,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:56,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:56,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 16:20:56,536 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2029983744, now seen corresponding path program 13 times [2022-03-01 16:20:56,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:56,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299796286] [2022-03-01 16:20:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:56,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:56,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:56,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299796286] [2022-03-01 16:20:56,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299796286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:56,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:56,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:20:56,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376555190] [2022-03-01 16:20:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:56,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:20:56,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:20:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:20:56,919 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:58,570 INFO L93 Difference]: Finished difference Result 1389 states and 3411 transitions. [2022-03-01 16:20:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:20:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:58,575 INFO L225 Difference]: With dead ends: 1389 [2022-03-01 16:20:58,575 INFO L226 Difference]: Without dead ends: 1254 [2022-03-01 16:20:58,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2734, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:20:58,576 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 347 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:58,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2899 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:20:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-01 16:20:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1134. [2022-03-01 16:20:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4748455428067078) internal successors, (2804), 1133 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-01 16:20:58,597 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-01 16:20:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:58,598 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-01 16:20:58,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-01 16:20:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:58,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:58,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:58,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 16:20:58,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 661978180, now seen corresponding path program 14 times [2022-03-01 16:20:58,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:58,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292352479] [2022-03-01 16:20:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:58,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:58,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292352479] [2022-03-01 16:20:58,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292352479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:58,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:58,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:20:58,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587583712] [2022-03-01 16:20:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:58,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:20:58,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:20:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:20:58,945 INFO L87 Difference]: Start difference. First operand 1134 states and 2804 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:59,957 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-01 16:20:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:20:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:20:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:59,961 INFO L225 Difference]: With dead ends: 1353 [2022-03-01 16:20:59,961 INFO L226 Difference]: Without dead ends: 1173 [2022-03-01 16:20:59,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:20:59,962 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 334 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:59,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2666 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-01 16:20:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1110. [2022-03-01 16:20:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 2.472497745716862) internal successors, (2742), 1109 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2742 transitions. [2022-03-01 16:20:59,980 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2742 transitions. Word has length 79 [2022-03-01 16:20:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:59,981 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2742 transitions. [2022-03-01 16:20:59,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2742 transitions. [2022-03-01 16:20:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:20:59,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:59,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:59,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 16:20:59,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1647496996, now seen corresponding path program 15 times [2022-03-01 16:20:59,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:59,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314331768] [2022-03-01 16:20:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:00,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:00,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314331768] [2022-03-01 16:21:00,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314331768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:00,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:00,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:21:00,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120706797] [2022-03-01 16:21:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:00,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:21:00,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:21:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:21:00,316 INFO L87 Difference]: Start difference. First operand 1110 states and 2742 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:01,172 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-01 16:21:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:21:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:01,176 INFO L225 Difference]: With dead ends: 1353 [2022-03-01 16:21:01,176 INFO L226 Difference]: Without dead ends: 1126 [2022-03-01 16:21:01,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:21:01,177 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 315 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:01,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2633 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-03-01 16:21:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2022-03-01 16:21:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 2.4731084776663628) internal successors, (2713), 1097 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2713 transitions. [2022-03-01 16:21:01,195 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2713 transitions. Word has length 79 [2022-03-01 16:21:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:01,195 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 2713 transitions. [2022-03-01 16:21:01,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2713 transitions. [2022-03-01 16:21:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:01,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:01,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:01,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 16:21:01,197 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash -179617636, now seen corresponding path program 16 times [2022-03-01 16:21:01,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:01,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070578976] [2022-03-01 16:21:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:01,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:01,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070578976] [2022-03-01 16:21:01,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070578976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:01,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:01,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:01,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222037696] [2022-03-01 16:21:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:01,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:01,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:01,510 INFO L87 Difference]: Start difference. First operand 1098 states and 2713 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:04,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:05,682 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-01 16:21:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:21:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:05,686 INFO L225 Difference]: With dead ends: 1419 [2022-03-01 16:21:05,686 INFO L226 Difference]: Without dead ends: 1321 [2022-03-01 16:21:05,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=2532, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:21:05,687 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 350 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:05,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 3275 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-01 16:21:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-03-01 16:21:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1170. [2022-03-01 16:21:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.4833190761334474) internal successors, (2903), 1169 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-03-01 16:21:05,707 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-03-01 16:21:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:05,707 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-03-01 16:21:05,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-03-01 16:21:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:05,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:05,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:05,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 16:21:05,709 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1136915256, now seen corresponding path program 17 times [2022-03-01 16:21:05,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:05,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653262484] [2022-03-01 16:21:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:06,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:06,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653262484] [2022-03-01 16:21:06,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653262484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:06,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:06,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:06,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213360468] [2022-03-01 16:21:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:06,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:06,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:06,091 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:07,826 INFO L93 Difference]: Finished difference Result 1387 states and 3393 transitions. [2022-03-01 16:21:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:21:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:07,829 INFO L225 Difference]: With dead ends: 1387 [2022-03-01 16:21:07,830 INFO L226 Difference]: Without dead ends: 1252 [2022-03-01 16:21:07,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2433, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:21:07,831 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 339 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:07,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 3078 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:21:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-03-01 16:21:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1146. [2022-03-01 16:21:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.477729257641921) internal successors, (2837), 1145 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-03-01 16:21:07,845 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-03-01 16:21:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:07,846 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-03-01 16:21:07,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-03-01 16:21:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:07,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:07,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:07,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 16:21:07,848 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash -231090308, now seen corresponding path program 18 times [2022-03-01 16:21:07,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:07,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618042899] [2022-03-01 16:21:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:07,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:08,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:08,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618042899] [2022-03-01 16:21:08,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618042899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:08,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:08,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:21:08,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200570423] [2022-03-01 16:21:08,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:21:08,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:21:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:21:08,164 INFO L87 Difference]: Start difference. First operand 1146 states and 2837 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:09,072 INFO L93 Difference]: Finished difference Result 1363 states and 3327 transitions. [2022-03-01 16:21:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:21:09,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:09,079 INFO L225 Difference]: With dead ends: 1363 [2022-03-01 16:21:09,079 INFO L226 Difference]: Without dead ends: 1183 [2022-03-01 16:21:09,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1978, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:21:09,081 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 323 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2844 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-01 16:21:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1122. [2022-03-01 16:21:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 2.471900089206066) internal successors, (2771), 1121 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2771 transitions. [2022-03-01 16:21:09,096 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2771 transitions. Word has length 79 [2022-03-01 16:21:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:09,097 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2771 transitions. [2022-03-01 16:21:09,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2771 transitions. [2022-03-01 16:21:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:09,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:09,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:09,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 16:21:09,101 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash 959444536, now seen corresponding path program 19 times [2022-03-01 16:21:09,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:09,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6973443] [2022-03-01 16:21:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:09,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:09,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6973443] [2022-03-01 16:21:09,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6973443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:09,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:09,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:21:09,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732093084] [2022-03-01 16:21:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:09,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:21:09,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:09,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:21:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:21:09,483 INFO L87 Difference]: Start difference. First operand 1122 states and 2771 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:10,273 INFO L93 Difference]: Finished difference Result 1339 states and 3261 transitions. [2022-03-01 16:21:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:21:10,273 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:10,275 INFO L225 Difference]: With dead ends: 1339 [2022-03-01 16:21:10,275 INFO L226 Difference]: Without dead ends: 1098 [2022-03-01 16:21:10,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:21:10,280 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 297 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:10,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2774 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-01 16:21:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1082. [2022-03-01 16:21:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 2.469010175763182) internal successors, (2669), 1081 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2669 transitions. [2022-03-01 16:21:10,305 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2669 transitions. Word has length 79 [2022-03-01 16:21:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:10,306 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 2669 transitions. [2022-03-01 16:21:10,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2669 transitions. [2022-03-01 16:21:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:10,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:10,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:10,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 16:21:10,308 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 159266140, now seen corresponding path program 20 times [2022-03-01 16:21:10,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:10,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502079095] [2022-03-01 16:21:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:10,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:10,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502079095] [2022-03-01 16:21:10,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502079095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:10,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:10,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:10,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518850279] [2022-03-01 16:21:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:10,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:10,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:10,647 INFO L87 Difference]: Start difference. First operand 1082 states and 2669 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:13,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:15,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:15,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:15,314 INFO L93 Difference]: Finished difference Result 1463 states and 3598 transitions. [2022-03-01 16:21:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:21:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:15,317 INFO L225 Difference]: With dead ends: 1463 [2022-03-01 16:21:15,317 INFO L226 Difference]: Without dead ends: 1365 [2022-03-01 16:21:15,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3504, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:21:15,319 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 385 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:15,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 3285 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-01 16:21:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-03-01 16:21:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1158. [2022-03-01 16:21:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-01 16:21:15,339 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-01 16:21:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:15,339 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-01 16:21:15,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-01 16:21:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:15,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:15,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:15,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 16:21:15,341 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1475799032, now seen corresponding path program 21 times [2022-03-01 16:21:15,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:15,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299589467] [2022-03-01 16:21:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:15,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:15,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299589467] [2022-03-01 16:21:15,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299589467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:15,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:15,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:15,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513448835] [2022-03-01 16:21:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:15,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:15,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:15,746 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:17,282 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-01 16:21:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:21:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:17,285 INFO L225 Difference]: With dead ends: 1419 [2022-03-01 16:21:17,285 INFO L226 Difference]: Without dead ends: 1284 [2022-03-01 16:21:17,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:21:17,286 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 387 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:17,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 3432 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:21:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-03-01 16:21:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1134. [2022-03-01 16:21:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4748455428067078) internal successors, (2804), 1133 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-01 16:21:17,308 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-01 16:21:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:17,309 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-01 16:21:17,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-01 16:21:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:17,311 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:17,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:17,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 16:21:17,312 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash 107793468, now seen corresponding path program 22 times [2022-03-01 16:21:17,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:17,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778353100] [2022-03-01 16:21:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:17,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:17,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778353100] [2022-03-01 16:21:17,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778353100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:17,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:17,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:17,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51667507] [2022-03-01 16:21:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:17,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:17,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:17,693 INFO L87 Difference]: Start difference. First operand 1134 states and 2804 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:19,042 INFO L93 Difference]: Finished difference Result 1383 states and 3382 transitions. [2022-03-01 16:21:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:21:19,042 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:19,044 INFO L225 Difference]: With dead ends: 1383 [2022-03-01 16:21:19,044 INFO L226 Difference]: Without dead ends: 1203 [2022-03-01 16:21:19,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2639, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:21:19,045 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 359 mSDsluCounter, 3045 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:19,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3036 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:21:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-01 16:21:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1110. [2022-03-01 16:21:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 2.468890892696123) internal successors, (2738), 1109 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2738 transitions. [2022-03-01 16:21:19,059 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2738 transitions. Word has length 79 [2022-03-01 16:21:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2738 transitions. [2022-03-01 16:21:19,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2738 transitions. [2022-03-01 16:21:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:19,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:19,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:19,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-01 16:21:19,061 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:19,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1298328312, now seen corresponding path program 23 times [2022-03-01 16:21:19,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:19,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281020474] [2022-03-01 16:21:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:19,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:19,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281020474] [2022-03-01 16:21:19,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281020474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:19,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:19,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:21:19,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848649244] [2022-03-01 16:21:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:19,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:21:19,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:21:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:21:19,403 INFO L87 Difference]: Start difference. First operand 1110 states and 2738 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:20,384 INFO L93 Difference]: Finished difference Result 1347 states and 3283 transitions. [2022-03-01 16:21:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:21:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:20,387 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:21:20,387 INFO L226 Difference]: Without dead ends: 1122 [2022-03-01 16:21:20,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=1977, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:21:20,388 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 320 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:20,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2808 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-03-01 16:21:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1086. [2022-03-01 16:21:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.466359447004608) internal successors, (2676), 1085 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2676 transitions. [2022-03-01 16:21:20,404 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2676 transitions. Word has length 79 [2022-03-01 16:21:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:20,404 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2676 transitions. [2022-03-01 16:21:20,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2676 transitions. [2022-03-01 16:21:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:20,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:20,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:20,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-01 16:21:20,408 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:20,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2146679560, now seen corresponding path program 24 times [2022-03-01 16:21:20,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:20,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606056669] [2022-03-01 16:21:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:20,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:20,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606056669] [2022-03-01 16:21:20,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606056669] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:20,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:20,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:21:20,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568526036] [2022-03-01 16:21:20,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:20,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:21:20,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:21:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:21:20,711 INFO L87 Difference]: Start difference. First operand 1086 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:21,372 INFO L93 Difference]: Finished difference Result 1374 states and 3351 transitions. [2022-03-01 16:21:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:21:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:21,374 INFO L225 Difference]: With dead ends: 1374 [2022-03-01 16:21:21,374 INFO L226 Difference]: Without dead ends: 1090 [2022-03-01 16:21:21,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:21:21,376 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 325 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:21,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2743 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-03-01 16:21:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1074. [2022-03-01 16:21:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 2.466915191053122) internal successors, (2647), 1073 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2647 transitions. [2022-03-01 16:21:21,417 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2647 transitions. Word has length 79 [2022-03-01 16:21:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:21,417 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2647 transitions. [2022-03-01 16:21:21,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2647 transitions. [2022-03-01 16:21:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:21,419 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:21,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:21,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-01 16:21:21,419 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1699775516, now seen corresponding path program 25 times [2022-03-01 16:21:21,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:21,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158996274] [2022-03-01 16:21:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:21,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:21,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:21,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158996274] [2022-03-01 16:21:21,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158996274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:21,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:21,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:21,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968963175] [2022-03-01 16:21:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:21,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:21,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:21,829 INFO L87 Difference]: Start difference. First operand 1074 states and 2647 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:24,273 INFO L93 Difference]: Finished difference Result 1439 states and 3532 transitions. [2022-03-01 16:21:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:21:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:24,275 INFO L225 Difference]: With dead ends: 1439 [2022-03-01 16:21:24,275 INFO L226 Difference]: Without dead ends: 1341 [2022-03-01 16:21:24,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:21:24,276 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 395 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:24,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3175 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:21:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-03-01 16:21:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1150. [2022-03-01 16:21:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 2.4786771105308962) internal successors, (2848), 1149 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 2848 transitions. [2022-03-01 16:21:24,290 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 2848 transitions. Word has length 79 [2022-03-01 16:21:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:24,290 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 2848 transitions. [2022-03-01 16:21:24,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 2848 transitions. [2022-03-01 16:21:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:24,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:24,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:24,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-01 16:21:24,292 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash -383242624, now seen corresponding path program 26 times [2022-03-01 16:21:24,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:24,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350200420] [2022-03-01 16:21:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:24,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:24,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350200420] [2022-03-01 16:21:24,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350200420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:24,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:24,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:24,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123755711] [2022-03-01 16:21:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:24,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:24,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:24,675 INFO L87 Difference]: Start difference. First operand 1150 states and 2848 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:26,303 INFO L93 Difference]: Finished difference Result 1395 states and 3415 transitions. [2022-03-01 16:21:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:21:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:26,305 INFO L225 Difference]: With dead ends: 1395 [2022-03-01 16:21:26,305 INFO L226 Difference]: Without dead ends: 1260 [2022-03-01 16:21:26,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=262, Invalid=3278, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:21:26,306 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 397 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:26,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3327 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:21:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-03-01 16:21:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1126. [2022-03-01 16:21:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 2.472888888888889) internal successors, (2782), 1125 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2782 transitions. [2022-03-01 16:21:26,319 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2782 transitions. Word has length 79 [2022-03-01 16:21:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:26,319 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 2782 transitions. [2022-03-01 16:21:26,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2782 transitions. [2022-03-01 16:21:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:26,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:26,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:26,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 16:21:26,322 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1751248188, now seen corresponding path program 27 times [2022-03-01 16:21:26,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:26,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342847437] [2022-03-01 16:21:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:26,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:26,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342847437] [2022-03-01 16:21:26,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342847437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:26,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:26,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:26,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521360177] [2022-03-01 16:21:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:26,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:26,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:26,670 INFO L87 Difference]: Start difference. First operand 1126 states and 2782 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:27,915 INFO L93 Difference]: Finished difference Result 1359 states and 3316 transitions. [2022-03-01 16:21:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:21:27,915 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:27,917 INFO L225 Difference]: With dead ends: 1359 [2022-03-01 16:21:27,917 INFO L226 Difference]: Without dead ends: 1179 [2022-03-01 16:21:27,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:21:27,918 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 340 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:27,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 3403 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:21:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-03-01 16:21:27,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1102. [2022-03-01 16:21:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 2.466848319709355) internal successors, (2716), 1101 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2716 transitions. [2022-03-01 16:21:27,931 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2716 transitions. Word has length 79 [2022-03-01 16:21:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:27,931 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 2716 transitions. [2022-03-01 16:21:27,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2716 transitions. [2022-03-01 16:21:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:27,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:27,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:27,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 16:21:27,933 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash -560713344, now seen corresponding path program 28 times [2022-03-01 16:21:27,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:27,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236671110] [2022-03-01 16:21:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:28,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:28,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236671110] [2022-03-01 16:21:28,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236671110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:28,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:28,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:21:28,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582288765] [2022-03-01 16:21:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:28,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:21:28,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:21:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:21:28,257 INFO L87 Difference]: Start difference. First operand 1102 states and 2716 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:29,231 INFO L93 Difference]: Finished difference Result 1323 states and 3217 transitions. [2022-03-01 16:21:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:21:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:29,234 INFO L225 Difference]: With dead ends: 1323 [2022-03-01 16:21:29,234 INFO L226 Difference]: Without dead ends: 1098 [2022-03-01 16:21:29,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:21:29,235 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 329 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:29,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2694 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-01 16:21:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2022-03-01 16:21:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.4642525533890436) internal successors, (2654), 1077 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2654 transitions. [2022-03-01 16:21:29,252 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2654 transitions. Word has length 79 [2022-03-01 16:21:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:29,252 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2654 transitions. [2022-03-01 16:21:29,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2654 transitions. [2022-03-01 16:21:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:29,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:29,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:29,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-01 16:21:29,254 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 287637904, now seen corresponding path program 29 times [2022-03-01 16:21:29,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:29,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668101375] [2022-03-01 16:21:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:29,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:29,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668101375] [2022-03-01 16:21:29,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668101375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:29,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:29,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:21:29,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606336924] [2022-03-01 16:21:29,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:29,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:21:29,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:29,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:21:29,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:21:29,619 INFO L87 Difference]: Start difference. First operand 1078 states and 2654 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:30,350 INFO L93 Difference]: Finished difference Result 1358 states and 3307 transitions. [2022-03-01 16:21:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:21:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:30,352 INFO L225 Difference]: With dead ends: 1358 [2022-03-01 16:21:30,352 INFO L226 Difference]: Without dead ends: 1082 [2022-03-01 16:21:30,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 16:21:30,353 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 342 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:30,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2566 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-03-01 16:21:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-03-01 16:21:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 2.463187325256291) internal successors, (2643), 1073 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2643 transitions. [2022-03-01 16:21:30,364 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2643 transitions. Word has length 79 [2022-03-01 16:21:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:30,364 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2643 transitions. [2022-03-01 16:21:30,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2643 transitions. [2022-03-01 16:21:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:30,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:30,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:30,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 16:21:30,366 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1141318424, now seen corresponding path program 30 times [2022-03-01 16:21:30,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:30,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945926547] [2022-03-01 16:21:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:30,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:30,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:30,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945926547] [2022-03-01 16:21:30,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945926547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:30,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:30,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:21:30,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802467336] [2022-03-01 16:21:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:30,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:21:30,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:21:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:21:30,716 INFO L87 Difference]: Start difference. First operand 1074 states and 2643 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:31,490 INFO L93 Difference]: Finished difference Result 1346 states and 3274 transitions. [2022-03-01 16:21:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 16:21:31,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:31,492 INFO L225 Difference]: With dead ends: 1346 [2022-03-01 16:21:31,492 INFO L226 Difference]: Without dead ends: 1001 [2022-03-01 16:21:31,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 16:21:31,493 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 343 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:31,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2790 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-03-01 16:21:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-03-01 16:21:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 2.488) internal successors, (2488), 1000 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2488 transitions. [2022-03-01 16:21:31,513 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2488 transitions. Word has length 79 [2022-03-01 16:21:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:31,514 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 2488 transitions. [2022-03-01 16:21:31,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2488 transitions. [2022-03-01 16:21:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:31,515 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:31,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:31,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-01 16:21:31,516 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -364385472, now seen corresponding path program 31 times [2022-03-01 16:21:31,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:31,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488913829] [2022-03-01 16:21:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:31,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:31,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488913829] [2022-03-01 16:21:31,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488913829] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:31,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:31,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:31,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827079769] [2022-03-01 16:21:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:31,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:31,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:31,951 INFO L87 Difference]: Start difference. First operand 1001 states and 2488 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:35,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:35,640 INFO L93 Difference]: Finished difference Result 1355 states and 3391 transitions. [2022-03-01 16:21:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:21:35,640 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:35,644 INFO L225 Difference]: With dead ends: 1355 [2022-03-01 16:21:35,644 INFO L226 Difference]: Without dead ends: 1225 [2022-03-01 16:21:35,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=293, Invalid=3613, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:21:35,645 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 399 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:35,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 3037 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:21:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-03-01 16:21:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1089. [2022-03-01 16:21:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.5018382352941178) internal successors, (2722), 1088 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2722 transitions. [2022-03-01 16:21:35,662 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2722 transitions. Word has length 79 [2022-03-01 16:21:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:35,662 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2722 transitions. [2022-03-01 16:21:35,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2722 transitions. [2022-03-01 16:21:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:35,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:35,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:35,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-01 16:21:35,664 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1217776638, now seen corresponding path program 32 times [2022-03-01 16:21:35,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:35,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407643013] [2022-03-01 16:21:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:35,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:36,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:36,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407643013] [2022-03-01 16:21:36,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407643013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:36,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:36,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:36,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286460468] [2022-03-01 16:21:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:36,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:36,050 INFO L87 Difference]: Start difference. First operand 1089 states and 2722 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:39,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:40,549 INFO L93 Difference]: Finished difference Result 1354 states and 3382 transitions. [2022-03-01 16:21:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:21:40,549 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:40,551 INFO L225 Difference]: With dead ends: 1354 [2022-03-01 16:21:40,551 INFO L226 Difference]: Without dead ends: 1256 [2022-03-01 16:21:40,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:21:40,553 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 376 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:40,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3012 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1221 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-01 16:21:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-03-01 16:21:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1093. [2022-03-01 16:21:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.499084249084249) internal successors, (2729), 1092 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2729 transitions. [2022-03-01 16:21:40,577 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2729 transitions. Word has length 79 [2022-03-01 16:21:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:40,577 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2729 transitions. [2022-03-01 16:21:40,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2729 transitions. [2022-03-01 16:21:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:40,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:40,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:40,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-01 16:21:40,579 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -503539360, now seen corresponding path program 33 times [2022-03-01 16:21:40,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:40,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904618888] [2022-03-01 16:21:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:40,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:40,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904618888] [2022-03-01 16:21:40,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904618888] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:40,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:40,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:40,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040990013] [2022-03-01 16:21:40,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:40,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:40,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:40,992 INFO L87 Difference]: Start difference. First operand 1093 states and 2729 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:42,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:44,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:45,830 INFO L93 Difference]: Finished difference Result 1337 states and 3333 transitions. [2022-03-01 16:21:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:21:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:45,833 INFO L225 Difference]: With dead ends: 1337 [2022-03-01 16:21:45,833 INFO L226 Difference]: Without dead ends: 1224 [2022-03-01 16:21:45,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:21:45,834 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 403 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:45,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2935 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1197 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-01 16:21:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-03-01 16:21:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1081. [2022-03-01 16:21:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4962962962962965) internal successors, (2696), 1080 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2696 transitions. [2022-03-01 16:21:45,846 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2696 transitions. Word has length 79 [2022-03-01 16:21:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:45,846 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2696 transitions. [2022-03-01 16:21:45,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2696 transitions. [2022-03-01 16:21:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:45,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:45,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:45,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-01 16:21:45,848 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash -178091134, now seen corresponding path program 34 times [2022-03-01 16:21:45,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:45,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259205314] [2022-03-01 16:21:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:46,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:46,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259205314] [2022-03-01 16:21:46,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259205314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:46,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:46,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:21:46,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107340360] [2022-03-01 16:21:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:46,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:21:46,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:21:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:21:46,295 INFO L87 Difference]: Start difference. First operand 1081 states and 2696 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:49,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:51,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:21:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:52,089 INFO L93 Difference]: Finished difference Result 1343 states and 3342 transitions. [2022-03-01 16:21:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:21:52,089 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:52,091 INFO L225 Difference]: With dead ends: 1343 [2022-03-01 16:21:52,091 INFO L226 Difference]: Without dead ends: 1193 [2022-03-01 16:21:52,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=221, Invalid=2641, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:21:52,092 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 306 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:52,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2929 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1182 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-03-01 16:21:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-03-01 16:21:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1077. [2022-03-01 16:21:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4953531598513012) internal successors, (2685), 1076 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2685 transitions. [2022-03-01 16:21:52,104 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2685 transitions. Word has length 79 [2022-03-01 16:21:52,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:52,104 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2685 transitions. [2022-03-01 16:21:52,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:52,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2685 transitions. [2022-03-01 16:21:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:52,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:52,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:52,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-01 16:21:52,106 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash 683491200, now seen corresponding path program 35 times [2022-03-01 16:21:52,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:52,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781603275] [2022-03-01 16:21:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:52,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:52,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781603275] [2022-03-01 16:21:52,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781603275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:52,489 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:52,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:52,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076939589] [2022-03-01 16:21:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:52,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:52,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:52,490 INFO L87 Difference]: Start difference. First operand 1077 states and 2685 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:54,219 INFO L93 Difference]: Finished difference Result 1332 states and 3309 transitions. [2022-03-01 16:21:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:21:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:54,221 INFO L225 Difference]: With dead ends: 1332 [2022-03-01 16:21:54,221 INFO L226 Difference]: Without dead ends: 1234 [2022-03-01 16:21:54,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:21:54,222 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 313 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:54,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 3060 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:21:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-03-01 16:21:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1101. [2022-03-01 16:21:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 2.4936363636363637) internal successors, (2743), 1100 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-01 16:21:54,239 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-01 16:21:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-01 16:21:54,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-01 16:21:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:54,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:54,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:54,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-01 16:21:54,241 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2000024092, now seen corresponding path program 36 times [2022-03-01 16:21:54,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:54,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566544610] [2022-03-01 16:21:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:54,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:54,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:54,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566544610] [2022-03-01 16:21:54,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566544610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:54,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:54,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:54,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620459303] [2022-03-01 16:21:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:54,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:54,657 INFO L87 Difference]: Start difference. First operand 1101 states and 2743 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:56,644 INFO L93 Difference]: Finished difference Result 1300 states and 3221 transitions. [2022-03-01 16:21:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:21:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:56,646 INFO L225 Difference]: With dead ends: 1300 [2022-03-01 16:21:56,646 INFO L226 Difference]: Without dead ends: 1141 [2022-03-01 16:21:56,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=2825, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:21:56,647 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 332 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:56,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2763 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:21:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-03-01 16:21:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1053. [2022-03-01 16:21:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4933460076045626) internal successors, (2623), 1052 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2623 transitions. [2022-03-01 16:21:56,660 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2623 transitions. Word has length 79 [2022-03-01 16:21:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:56,661 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2623 transitions. [2022-03-01 16:21:56,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2623 transitions. [2022-03-01 16:21:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:56,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:56,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:56,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-01 16:21:56,662 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1725629730, now seen corresponding path program 37 times [2022-03-01 16:21:56,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:56,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117479542] [2022-03-01 16:21:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:56,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:56,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117479542] [2022-03-01 16:21:56,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117479542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:56,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:56,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:56,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613244017] [2022-03-01 16:21:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:56,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:56,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:56,993 INFO L87 Difference]: Start difference. First operand 1053 states and 2623 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:58,625 INFO L93 Difference]: Finished difference Result 1287 states and 3200 transitions. [2022-03-01 16:21:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:21:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:21:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:58,627 INFO L225 Difference]: With dead ends: 1287 [2022-03-01 16:21:58,627 INFO L226 Difference]: Without dead ends: 1173 [2022-03-01 16:21:58,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:21:58,628 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 338 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:58,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2613 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:21:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-01 16:21:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1077. [2022-03-01 16:21:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4953531598513012) internal successors, (2685), 1076 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2685 transitions. [2022-03-01 16:21:58,644 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2685 transitions. Word has length 79 [2022-03-01 16:21:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2685 transitions. [2022-03-01 16:21:58,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2685 transitions. [2022-03-01 16:21:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:21:58,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:58,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:58,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-01 16:21:58,647 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1358735300, now seen corresponding path program 38 times [2022-03-01 16:21:58,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:58,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065828163] [2022-03-01 16:21:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:59,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:59,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065828163] [2022-03-01 16:21:59,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065828163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:21:59,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:21:59,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:21:59,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348322405] [2022-03-01 16:21:59,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:21:59,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:21:59,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:59,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:21:59,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:21:59,043 INFO L87 Difference]: Start difference. First operand 1077 states and 2685 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:00,755 INFO L93 Difference]: Finished difference Result 1298 states and 3224 transitions. [2022-03-01 16:22:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:22:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:00,757 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:22:00,757 INFO L226 Difference]: Without dead ends: 1200 [2022-03-01 16:22:00,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=2825, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:22:00,758 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 328 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:00,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2956 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:22:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-01 16:22:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1081. [2022-03-01 16:22:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4925925925925925) internal successors, (2692), 1080 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-03-01 16:22:00,771 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-03-01 16:22:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:00,771 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-03-01 16:22:00,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-03-01 16:22:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:00,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:00,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:00,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-01 16:22:00,773 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2072972578, now seen corresponding path program 39 times [2022-03-01 16:22:00,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:00,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661143991] [2022-03-01 16:22:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:01,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:01,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661143991] [2022-03-01 16:22:01,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661143991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:01,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:01,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:01,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079463003] [2022-03-01 16:22:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:01,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:01,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:01,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:01,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:01,179 INFO L87 Difference]: Start difference. First operand 1081 states and 2692 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:04,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:05,141 INFO L93 Difference]: Finished difference Result 1306 states and 3238 transitions. [2022-03-01 16:22:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:22:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:05,143 INFO L225 Difference]: With dead ends: 1306 [2022-03-01 16:22:05,143 INFO L226 Difference]: Without dead ends: 1197 [2022-03-01 16:22:05,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:22:05,144 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 323 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:05,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2986 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1178 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-01 16:22:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-03-01 16:22:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1113. [2022-03-01 16:22:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.4928057553956835) internal successors, (2772), 1112 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:05,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2772 transitions. [2022-03-01 16:22:05,156 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2772 transitions. Word has length 79 [2022-03-01 16:22:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:05,156 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 2772 transitions. [2022-03-01 16:22:05,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2772 transitions. [2022-03-01 16:22:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:05,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:05,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:05,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-01 16:22:05,157 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1751303904, now seen corresponding path program 40 times [2022-03-01 16:22:05,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:05,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273329130] [2022-03-01 16:22:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:05,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:05,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:05,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273329130] [2022-03-01 16:22:05,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273329130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:05,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:05,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:05,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781346181] [2022-03-01 16:22:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:05,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:05,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:05,607 INFO L87 Difference]: Start difference. First operand 1113 states and 2772 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:08,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:10,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:11,750 INFO L93 Difference]: Finished difference Result 1364 states and 3385 transitions. [2022-03-01 16:22:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:22:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:11,752 INFO L225 Difference]: With dead ends: 1364 [2022-03-01 16:22:11,752 INFO L226 Difference]: Without dead ends: 1266 [2022-03-01 16:22:11,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=2930, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:22:11,753 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 360 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:11,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2764 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1127 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-03-01 16:22:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-03-01 16:22:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1137. [2022-03-01 16:22:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 2.4911971830985915) internal successors, (2830), 1136 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2830 transitions. [2022-03-01 16:22:11,766 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2830 transitions. Word has length 79 [2022-03-01 16:22:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 2830 transitions. [2022-03-01 16:22:11,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2830 transitions. [2022-03-01 16:22:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:11,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:11,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:11,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-01 16:22:11,772 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -434771012, now seen corresponding path program 41 times [2022-03-01 16:22:11,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:11,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077023240] [2022-03-01 16:22:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:12,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:12,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077023240] [2022-03-01 16:22:12,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077023240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:12,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:12,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:12,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146864999] [2022-03-01 16:22:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:12,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:12,196 INFO L87 Difference]: Start difference. First operand 1137 states and 2830 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:13,745 INFO L93 Difference]: Finished difference Result 1347 states and 3332 transitions. [2022-03-01 16:22:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:22:13,745 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:13,747 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:22:13,747 INFO L226 Difference]: Without dead ends: 1204 [2022-03-01 16:22:13,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:22:13,747 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 349 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:13,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2730 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:22:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-03-01 16:22:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1105. [2022-03-01 16:22:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.483695652173913) internal successors, (2742), 1104 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-03-01 16:22:13,760 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-03-01 16:22:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:13,761 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-03-01 16:22:13,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-03-01 16:22:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:13,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:13,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:13,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-01 16:22:13,763 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:13,763 INFO L85 PathProgramCache]: Analyzing trace with hash -917420034, now seen corresponding path program 42 times [2022-03-01 16:22:13,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:13,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078338401] [2022-03-01 16:22:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:13,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:14,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:14,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078338401] [2022-03-01 16:22:14,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078338401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:14,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:14,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:22:14,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016353116] [2022-03-01 16:22:14,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:14,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:22:14,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:22:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:22:14,193 INFO L87 Difference]: Start difference. First operand 1105 states and 2742 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:17,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:17,423 INFO L93 Difference]: Finished difference Result 1407 states and 3485 transitions. [2022-03-01 16:22:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:22:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:17,426 INFO L225 Difference]: With dead ends: 1407 [2022-03-01 16:22:17,426 INFO L226 Difference]: Without dead ends: 1309 [2022-03-01 16:22:17,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:22:17,427 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 361 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:17,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3098 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-01 16:22:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-03-01 16:22:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1133. [2022-03-01 16:22:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 2.48321554770318) internal successors, (2811), 1132 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 2811 transitions. [2022-03-01 16:22:17,439 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 2811 transitions. Word has length 79 [2022-03-01 16:22:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:17,440 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 2811 transitions. [2022-03-01 16:22:17,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 2811 transitions. [2022-03-01 16:22:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:17,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:17,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:17,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-01 16:22:17,441 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 399112858, now seen corresponding path program 43 times [2022-03-01 16:22:17,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:17,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598365935] [2022-03-01 16:22:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:17,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:17,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598365935] [2022-03-01 16:22:17,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598365935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:17,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:17,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:22:17,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292650956] [2022-03-01 16:22:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:17,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:22:17,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:22:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:22:17,874 INFO L87 Difference]: Start difference. First operand 1133 states and 2811 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:19,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:19,934 INFO L93 Difference]: Finished difference Result 1378 states and 3403 transitions. [2022-03-01 16:22:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:22:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:19,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:19,936 INFO L225 Difference]: With dead ends: 1378 [2022-03-01 16:22:19,936 INFO L226 Difference]: Without dead ends: 1243 [2022-03-01 16:22:19,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=3494, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:22:19,937 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 382 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:19,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 3090 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:22:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-01 16:22:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1109. [2022-03-01 16:22:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 2.4810469314079424) internal successors, (2749), 1108 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 2749 transitions. [2022-03-01 16:22:19,951 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 2749 transitions. Word has length 79 [2022-03-01 16:22:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:19,952 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 2749 transitions. [2022-03-01 16:22:19,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 2749 transitions. [2022-03-01 16:22:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:19,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:19,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:19,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-01 16:22:19,955 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash -731402172, now seen corresponding path program 44 times [2022-03-01 16:22:19,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:19,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814562240] [2022-03-01 16:22:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:20,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:20,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814562240] [2022-03-01 16:22:20,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814562240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:20,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:20,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:20,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112321716] [2022-03-01 16:22:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:20,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:20,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:20,362 INFO L87 Difference]: Start difference. First operand 1109 states and 2749 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:22,120 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-01 16:22:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:22:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:22,122 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:22:22,122 INFO L226 Difference]: Without dead ends: 1173 [2022-03-01 16:22:22,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=2835, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:22:22,123 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 375 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:22,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2948 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:22:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-01 16:22:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1093. [2022-03-01 16:22:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.477106227106227) internal successors, (2705), 1092 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2705 transitions. [2022-03-01 16:22:22,146 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2705 transitions. Word has length 79 [2022-03-01 16:22:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2705 transitions. [2022-03-01 16:22:22,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2705 transitions. [2022-03-01 16:22:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:22,148 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:22,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:22,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-01 16:22:22,148 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1689438564, now seen corresponding path program 45 times [2022-03-01 16:22:22,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:22,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584043381] [2022-03-01 16:22:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:22,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:22,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584043381] [2022-03-01 16:22:22,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584043381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:22,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:22,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:22,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887444142] [2022-03-01 16:22:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:22,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:22,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:22,666 INFO L87 Difference]: Start difference. First operand 1093 states and 2705 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:25,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:26,634 INFO L93 Difference]: Finished difference Result 1381 states and 3401 transitions. [2022-03-01 16:22:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:22:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:26,636 INFO L225 Difference]: With dead ends: 1381 [2022-03-01 16:22:26,636 INFO L226 Difference]: Without dead ends: 1283 [2022-03-01 16:22:26,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:22:26,637 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 328 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:26,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3135 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1208 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-01 16:22:26,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-03-01 16:22:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1141. [2022-03-01 16:22:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.481578947368421) internal successors, (2829), 1140 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 2829 transitions. [2022-03-01 16:22:26,648 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 2829 transitions. Word has length 79 [2022-03-01 16:22:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:26,648 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 2829 transitions. [2022-03-01 16:22:26,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 2829 transitions. [2022-03-01 16:22:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:26,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:26,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:26,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-01 16:22:26,650 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1288995840, now seen corresponding path program 46 times [2022-03-01 16:22:26,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:26,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454755575] [2022-03-01 16:22:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:27,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:27,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454755575] [2022-03-01 16:22:27,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454755575] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:27,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:27,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:27,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244841551] [2022-03-01 16:22:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:27,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:27,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:27,016 INFO L87 Difference]: Start difference. First operand 1141 states and 2829 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:28,554 INFO L93 Difference]: Finished difference Result 1436 states and 3542 transitions. [2022-03-01 16:22:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:22:28,554 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:28,556 INFO L225 Difference]: With dead ends: 1436 [2022-03-01 16:22:28,556 INFO L226 Difference]: Without dead ends: 1273 [2022-03-01 16:22:28,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:22:28,557 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 366 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:28,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 2863 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:22:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-03-01 16:22:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1141. [2022-03-01 16:22:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.471052631578947) internal successors, (2817), 1140 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 2817 transitions. [2022-03-01 16:22:28,568 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 2817 transitions. Word has length 79 [2022-03-01 16:22:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:28,569 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 2817 transitions. [2022-03-01 16:22:28,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 2817 transitions. [2022-03-01 16:22:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:28,570 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:28,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:28,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-01 16:22:28,570 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1637965892, now seen corresponding path program 47 times [2022-03-01 16:22:28,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:28,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424778982] [2022-03-01 16:22:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:28,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:28,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424778982] [2022-03-01 16:22:28,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424778982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:28,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:28,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:28,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640697214] [2022-03-01 16:22:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:28,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:28,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:28,992 INFO L87 Difference]: Start difference. First operand 1141 states and 2817 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:32,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:32,814 INFO L93 Difference]: Finished difference Result 1349 states and 3301 transitions. [2022-03-01 16:22:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:22:32,815 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:32,816 INFO L225 Difference]: With dead ends: 1349 [2022-03-01 16:22:32,816 INFO L226 Difference]: Without dead ends: 1145 [2022-03-01 16:22:32,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2433, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:22:32,817 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 320 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:32,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2926 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-01 16:22:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-03-01 16:22:32,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1093. [2022-03-01 16:22:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.4624542124542126) internal successors, (2689), 1092 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2689 transitions. [2022-03-01 16:22:32,837 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2689 transitions. Word has length 79 [2022-03-01 16:22:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:32,838 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2689 transitions. [2022-03-01 16:22:32,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2689 transitions. [2022-03-01 16:22:32,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:32,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:32,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:32,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-01 16:22:32,840 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 902399910, now seen corresponding path program 48 times [2022-03-01 16:22:32,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:32,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132379409] [2022-03-01 16:22:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:33,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:33,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132379409] [2022-03-01 16:22:33,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132379409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:33,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:33,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:33,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885021684] [2022-03-01 16:22:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:33,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:33,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:33,279 INFO L87 Difference]: Start difference. First operand 1093 states and 2689 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:34,460 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-03-01 16:22:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:22:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:34,462 INFO L225 Difference]: With dead ends: 1321 [2022-03-01 16:22:34,462 INFO L226 Difference]: Without dead ends: 1196 [2022-03-01 16:22:34,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:22:34,462 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 343 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:34,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2624 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-03-01 16:22:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1105. [2022-03-01 16:22:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.4800724637681157) internal successors, (2738), 1104 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2738 transitions. [2022-03-01 16:22:34,475 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2738 transitions. Word has length 79 [2022-03-01 16:22:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:34,476 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2738 transitions. [2022-03-01 16:22:34,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2738 transitions. [2022-03-01 16:22:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:34,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:34,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:34,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-01 16:22:34,478 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2023289564, now seen corresponding path program 49 times [2022-03-01 16:22:34,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:34,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281287252] [2022-03-01 16:22:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:34,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:34,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281287252] [2022-03-01 16:22:34,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281287252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:34,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:34,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:34,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537870346] [2022-03-01 16:22:34,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:34,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:34,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:34,918 INFO L87 Difference]: Start difference. First operand 1105 states and 2738 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:38,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:22:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:38,673 INFO L93 Difference]: Finished difference Result 1477 states and 3611 transitions. [2022-03-01 16:22:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:22:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:38,675 INFO L225 Difference]: With dead ends: 1477 [2022-03-01 16:22:38,675 INFO L226 Difference]: Without dead ends: 1339 [2022-03-01 16:22:38,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=3041, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:22:38,676 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 374 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:38,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2962 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1176 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:22:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-03-01 16:22:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1093. [2022-03-01 16:22:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.4954212454212454) internal successors, (2725), 1092 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2725 transitions. [2022-03-01 16:22:38,687 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2725 transitions. Word has length 79 [2022-03-01 16:22:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:38,687 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2725 transitions. [2022-03-01 16:22:38,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2725 transitions. [2022-03-01 16:22:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:38,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:38,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:38,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-01 16:22:38,689 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1342003044, now seen corresponding path program 50 times [2022-03-01 16:22:38,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:38,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956544369] [2022-03-01 16:22:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:38,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:39,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:39,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956544369] [2022-03-01 16:22:39,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956544369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:39,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:39,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:39,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851958708] [2022-03-01 16:22:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:39,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:39,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:39,058 INFO L87 Difference]: Start difference. First operand 1093 states and 2725 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:40,159 INFO L93 Difference]: Finished difference Result 1279 states and 3170 transitions. [2022-03-01 16:22:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:22:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:40,161 INFO L225 Difference]: With dead ends: 1279 [2022-03-01 16:22:40,161 INFO L226 Difference]: Without dead ends: 1165 [2022-03-01 16:22:40,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=1972, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:22:40,162 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 263 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:40,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2443 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-03-01 16:22:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1093. [2022-03-01 16:22:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.491758241758242) internal successors, (2721), 1092 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-01 16:22:40,172 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-01 16:22:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:40,172 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-01 16:22:40,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-01 16:22:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:40,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:40,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:40,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-01 16:22:40,174 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1708897474, now seen corresponding path program 51 times [2022-03-01 16:22:40,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:40,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048068380] [2022-03-01 16:22:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:40,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:40,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048068380] [2022-03-01 16:22:40,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048068380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:40,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:40,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:40,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314634855] [2022-03-01 16:22:40,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:40,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:40,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:40,533 INFO L87 Difference]: Start difference. First operand 1093 states and 2721 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:41,736 INFO L93 Difference]: Finished difference Result 1251 states and 3097 transitions. [2022-03-01 16:22:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:22:41,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:41,738 INFO L225 Difference]: With dead ends: 1251 [2022-03-01 16:22:41,738 INFO L226 Difference]: Without dead ends: 1145 [2022-03-01 16:22:41,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:22:41,738 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 294 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:41,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2424 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:22:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-03-01 16:22:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1085. [2022-03-01 16:22:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 2.493542435424354) internal successors, (2703), 1084 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2703 transitions. [2022-03-01 16:22:41,748 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2703 transitions. Word has length 79 [2022-03-01 16:22:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:41,749 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2703 transitions. [2022-03-01 16:22:41,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2703 transitions. [2022-03-01 16:22:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:41,750 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:41,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:41,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-01 16:22:41,750 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:41,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:41,750 INFO L85 PathProgramCache]: Analyzing trace with hash -523969382, now seen corresponding path program 52 times [2022-03-01 16:22:41,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:41,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695435097] [2022-03-01 16:22:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:42,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:42,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695435097] [2022-03-01 16:22:42,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695435097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:42,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:42,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:42,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88615578] [2022-03-01 16:22:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:42,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:42,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:42,116 INFO L87 Difference]: Start difference. First operand 1085 states and 2703 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:43,439 INFO L93 Difference]: Finished difference Result 1308 states and 3239 transitions. [2022-03-01 16:22:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:22:43,439 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:43,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:43,441 INFO L225 Difference]: With dead ends: 1308 [2022-03-01 16:22:43,441 INFO L226 Difference]: Without dead ends: 1210 [2022-03-01 16:22:43,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:22:43,441 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 311 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:43,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2739 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:22:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-01 16:22:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1109. [2022-03-01 16:22:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 2.4918772563176894) internal successors, (2761), 1108 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 2761 transitions. [2022-03-01 16:22:43,453 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 2761 transitions. Word has length 79 [2022-03-01 16:22:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:43,453 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 2761 transitions. [2022-03-01 16:22:43,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 2761 transitions. [2022-03-01 16:22:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:43,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:43,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:43,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-01 16:22:43,456 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 792563510, now seen corresponding path program 53 times [2022-03-01 16:22:43,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:43,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257653685] [2022-03-01 16:22:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:43,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:43,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:43,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257653685] [2022-03-01 16:22:43,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257653685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:43,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:43,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:43,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328170536] [2022-03-01 16:22:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:43,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:43,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:43,831 INFO L87 Difference]: Start difference. First operand 1109 states and 2761 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:44,956 INFO L93 Difference]: Finished difference Result 1276 states and 3151 transitions. [2022-03-01 16:22:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:22:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:44,958 INFO L225 Difference]: With dead ends: 1276 [2022-03-01 16:22:44,958 INFO L226 Difference]: Without dead ends: 1133 [2022-03-01 16:22:44,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:22:44,958 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 310 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:44,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2708 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-03-01 16:22:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1077. [2022-03-01 16:22:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.491635687732342) internal successors, (2681), 1076 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2681 transitions. [2022-03-01 16:22:44,969 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2681 transitions. Word has length 79 [2022-03-01 16:22:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:44,969 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2681 transitions. [2022-03-01 16:22:44,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2681 transitions. [2022-03-01 16:22:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:44,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:44,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:44,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-01 16:22:44,970 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 309914488, now seen corresponding path program 54 times [2022-03-01 16:22:44,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:44,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793099401] [2022-03-01 16:22:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:45,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:45,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793099401] [2022-03-01 16:22:45,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793099401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:45,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:45,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:45,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205189401] [2022-03-01 16:22:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:45,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:45,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:45,348 INFO L87 Difference]: Start difference. First operand 1077 states and 2681 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:46,827 INFO L93 Difference]: Finished difference Result 1351 states and 3347 transitions. [2022-03-01 16:22:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:22:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:46,829 INFO L225 Difference]: With dead ends: 1351 [2022-03-01 16:22:46,829 INFO L226 Difference]: Without dead ends: 1253 [2022-03-01 16:22:46,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:22:46,830 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:46,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 3013 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:22:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-03-01 16:22:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1105. [2022-03-01 16:22:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.4909420289855073) internal successors, (2750), 1104 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-03-01 16:22:46,843 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-03-01 16:22:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:46,843 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-03-01 16:22:46,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-03-01 16:22:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:46,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:46,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:46,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-01 16:22:46,847 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1626447380, now seen corresponding path program 55 times [2022-03-01 16:22:46,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:46,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508455669] [2022-03-01 16:22:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:47,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:47,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508455669] [2022-03-01 16:22:47,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508455669] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:47,224 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:47,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:47,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157909592] [2022-03-01 16:22:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:47,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:47,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:47,225 INFO L87 Difference]: Start difference. First operand 1105 states and 2750 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:48,614 INFO L93 Difference]: Finished difference Result 1307 states and 3230 transitions. [2022-03-01 16:22:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:22:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:48,616 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:22:48,616 INFO L226 Difference]: Without dead ends: 1172 [2022-03-01 16:22:48,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:22:48,617 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 346 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:48,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2872 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:22:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-01 16:22:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1081. [2022-03-01 16:22:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.488888888888889) internal successors, (2688), 1080 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2688 transitions. [2022-03-01 16:22:48,627 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2688 transitions. Word has length 79 [2022-03-01 16:22:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:48,627 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2688 transitions. [2022-03-01 16:22:48,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2688 transitions. [2022-03-01 16:22:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:48,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:48,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:48,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-01 16:22:48,629 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash 495932350, now seen corresponding path program 56 times [2022-03-01 16:22:48,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:48,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134276416] [2022-03-01 16:22:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:49,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:49,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134276416] [2022-03-01 16:22:49,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134276416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:49,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:49,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:49,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686591891] [2022-03-01 16:22:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:49,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:49,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:49,050 INFO L87 Difference]: Start difference. First operand 1081 states and 2688 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:50,356 INFO L93 Difference]: Finished difference Result 1295 states and 3197 transitions. [2022-03-01 16:22:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:22:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:50,358 INFO L225 Difference]: With dead ends: 1295 [2022-03-01 16:22:50,358 INFO L226 Difference]: Without dead ends: 1129 [2022-03-01 16:22:50,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:22:50,358 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 304 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:50,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2787 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:22:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-03-01 16:22:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1073. [2022-03-01 16:22:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.4906716417910446) internal successors, (2670), 1072 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2670 transitions. [2022-03-01 16:22:50,369 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2670 transitions. Word has length 79 [2022-03-01 16:22:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:50,369 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2670 transitions. [2022-03-01 16:22:50,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2670 transitions. [2022-03-01 16:22:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:50,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:50,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:50,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-01 16:22:50,370 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -622449952, now seen corresponding path program 57 times [2022-03-01 16:22:50,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:50,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442591119] [2022-03-01 16:22:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:50,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:50,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442591119] [2022-03-01 16:22:50,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442591119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:50,806 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:50,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:50,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570584286] [2022-03-01 16:22:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:50,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:50,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:50,807 INFO L87 Difference]: Start difference. First operand 1073 states and 2670 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:52,775 INFO L93 Difference]: Finished difference Result 1313 states and 3238 transitions. [2022-03-01 16:22:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:22:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:52,776 INFO L225 Difference]: With dead ends: 1313 [2022-03-01 16:22:52,776 INFO L226 Difference]: Without dead ends: 1162 [2022-03-01 16:22:52,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:22:52,777 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 351 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:52,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2771 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:22:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-01 16:22:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1073. [2022-03-01 16:22:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.486940298507463) internal successors, (2666), 1072 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-03-01 16:22:52,788 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-03-01 16:22:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:52,789 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-03-01 16:22:52,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-03-01 16:22:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:52,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:52,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:52,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-01 16:22:52,790 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1388159902, now seen corresponding path program 58 times [2022-03-01 16:22:52,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:52,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064827494] [2022-03-01 16:22:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:53,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:53,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064827494] [2022-03-01 16:22:53,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064827494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:53,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:53,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:22:53,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646374519] [2022-03-01 16:22:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:53,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:22:53,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:22:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:22:53,198 INFO L87 Difference]: Start difference. First operand 1073 states and 2666 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:54,595 INFO L93 Difference]: Finished difference Result 1273 states and 3128 transitions. [2022-03-01 16:22:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:22:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:54,597 INFO L225 Difference]: With dead ends: 1273 [2022-03-01 16:22:54,597 INFO L226 Difference]: Without dead ends: 1085 [2022-03-01 16:22:54,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:22:54,597 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 289 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:54,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2816 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:22:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-01 16:22:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-01 16:22:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 2.4865384615384616) internal successors, (2586), 1040 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2586 transitions. [2022-03-01 16:22:54,608 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2586 transitions. Word has length 79 [2022-03-01 16:22:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:54,608 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2586 transitions. [2022-03-01 16:22:54,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2586 transitions. [2022-03-01 16:22:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:54,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:54,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:54,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-01 16:22:54,609 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1998693084, now seen corresponding path program 59 times [2022-03-01 16:22:54,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:54,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173499813] [2022-03-01 16:22:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:55,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:55,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173499813] [2022-03-01 16:22:55,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173499813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:55,039 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:55,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:22:55,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527219202] [2022-03-01 16:22:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:55,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:22:55,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:22:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:22:55,040 INFO L87 Difference]: Start difference. First operand 1041 states and 2586 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:56,833 INFO L93 Difference]: Finished difference Result 1369 states and 3388 transitions. [2022-03-01 16:22:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:22:56,833 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:56,835 INFO L225 Difference]: With dead ends: 1369 [2022-03-01 16:22:56,835 INFO L226 Difference]: Without dead ends: 1271 [2022-03-01 16:22:56,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=280, Invalid=3502, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:22:56,836 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 339 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:56,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 3399 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:22:56,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-01 16:22:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1093. [2022-03-01 16:22:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.491758241758242) internal successors, (2721), 1092 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-01 16:22:56,847 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-01 16:22:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:56,847 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-01 16:22:56,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-01 16:22:56,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:56,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:56,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:56,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-01 16:22:56,848 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:56,849 INFO L85 PathProgramCache]: Analyzing trace with hash -682160192, now seen corresponding path program 60 times [2022-03-01 16:22:56,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:56,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874158613] [2022-03-01 16:22:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:57,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:57,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874158613] [2022-03-01 16:22:57,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874158613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:57,259 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:57,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:22:57,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82845222] [2022-03-01 16:22:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:57,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:22:57,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:22:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:22:57,260 INFO L87 Difference]: Start difference. First operand 1093 states and 2721 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:59,094 INFO L93 Difference]: Finished difference Result 1325 states and 3271 transitions. [2022-03-01 16:22:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:22:59,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:22:59,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:59,097 INFO L225 Difference]: With dead ends: 1325 [2022-03-01 16:22:59,097 INFO L226 Difference]: Without dead ends: 1190 [2022-03-01 16:22:59,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=272, Invalid=3388, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:22:59,098 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 341 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:59,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3086 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:22:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-01 16:22:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1069. [2022-03-01 16:22:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.485955056179775) internal successors, (2655), 1068 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-01 16:22:59,117 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-01 16:22:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:59,117 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-01 16:22:59,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-01 16:22:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:22:59,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:59,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:59,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-01 16:22:59,119 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2050165756, now seen corresponding path program 61 times [2022-03-01 16:22:59,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:59,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947776456] [2022-03-01 16:22:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:59,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:59,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947776456] [2022-03-01 16:22:59,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947776456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:59,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:22:59,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:22:59,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113222249] [2022-03-01 16:22:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:59,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:22:59,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:22:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:22:59,542 INFO L87 Difference]: Start difference. First operand 1069 states and 2655 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:00,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:00,872 INFO L93 Difference]: Finished difference Result 1289 states and 3172 transitions. [2022-03-01 16:23:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:23:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:00,874 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:23:00,874 INFO L226 Difference]: Without dead ends: 1109 [2022-03-01 16:23:00,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=2637, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:23:00,874 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 330 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:00,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 3023 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-01 16:23:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1045. [2022-03-01 16:23:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 2.4837164750957856) internal successors, (2593), 1044 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2593 transitions. [2022-03-01 16:23:00,886 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2593 transitions. Word has length 79 [2022-03-01 16:23:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2593 transitions. [2022-03-01 16:23:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2593 transitions. [2022-03-01 16:23:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:00,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:00,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:00,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-01 16:23:00,888 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -64673636, now seen corresponding path program 62 times [2022-03-01 16:23:00,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:00,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728663515] [2022-03-01 16:23:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:01,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:01,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728663515] [2022-03-01 16:23:01,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728663515] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:01,236 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:01,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:01,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838103006] [2022-03-01 16:23:01,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:01,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:01,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:01,237 INFO L87 Difference]: Start difference. First operand 1045 states and 2593 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:02,473 INFO L93 Difference]: Finished difference Result 1304 states and 3207 transitions. [2022-03-01 16:23:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:23:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:02,475 INFO L225 Difference]: With dead ends: 1304 [2022-03-01 16:23:02,475 INFO L226 Difference]: Without dead ends: 1073 [2022-03-01 16:23:02,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=2066, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:23:02,476 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 329 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:02,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2958 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:23:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-01 16:23:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1029. [2022-03-01 16:23:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4834630350194553) internal successors, (2553), 1028 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2553 transitions. [2022-03-01 16:23:02,491 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2553 transitions. Word has length 79 [2022-03-01 16:23:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:02,491 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2553 transitions. [2022-03-01 16:23:02,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2553 transitions. [2022-03-01 16:23:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:02,492 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:02,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:02,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-01 16:23:02,492 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1581719678, now seen corresponding path program 63 times [2022-03-01 16:23:02,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:02,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934326079] [2022-03-01 16:23:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:02,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:02,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934326079] [2022-03-01 16:23:02,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934326079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:02,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:02,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:02,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163733925] [2022-03-01 16:23:02,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:02,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:02,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:02,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:02,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:02,867 INFO L87 Difference]: Start difference. First operand 1029 states and 2553 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:04,812 INFO L93 Difference]: Finished difference Result 1345 states and 3322 transitions. [2022-03-01 16:23:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:23:04,812 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:04,814 INFO L225 Difference]: With dead ends: 1345 [2022-03-01 16:23:04,814 INFO L226 Difference]: Without dead ends: 1247 [2022-03-01 16:23:04,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:23:04,814 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 351 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:04,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2864 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:23:04,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-01 16:23:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1089. [2022-03-01 16:23:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.4908088235294117) internal successors, (2710), 1088 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-03-01 16:23:04,824 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-03-01 16:23:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:04,824 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-03-01 16:23:04,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-03-01 16:23:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:04,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:04,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:04,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-01 16:23:04,827 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1396714726, now seen corresponding path program 64 times [2022-03-01 16:23:04,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:04,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043300273] [2022-03-01 16:23:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:05,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:05,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043300273] [2022-03-01 16:23:05,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043300273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:05,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:05,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:05,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101038801] [2022-03-01 16:23:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:05,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:05,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:05,280 INFO L87 Difference]: Start difference. First operand 1089 states and 2710 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:07,203 INFO L93 Difference]: Finished difference Result 1301 states and 3205 transitions. [2022-03-01 16:23:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:23:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:07,205 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:23:07,205 INFO L226 Difference]: Without dead ends: 1166 [2022-03-01 16:23:07,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=2943, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:23:07,206 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 321 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:07,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2983 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:23:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-01 16:23:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1065. [2022-03-01 16:23:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.4849624060150375) internal successors, (2644), 1064 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2644 transitions. [2022-03-01 16:23:07,217 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2644 transitions. Word has length 79 [2022-03-01 16:23:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2644 transitions. [2022-03-01 16:23:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2644 transitions. [2022-03-01 16:23:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:07,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:07,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:07,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-01 16:23:07,219 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1530247006, now seen corresponding path program 65 times [2022-03-01 16:23:07,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:07,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242469208] [2022-03-01 16:23:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:07,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:07,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242469208] [2022-03-01 16:23:07,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242469208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:07,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:07,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:07,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005408736] [2022-03-01 16:23:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:07,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:07,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:07,596 INFO L87 Difference]: Start difference. First operand 1065 states and 2644 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:08,978 INFO L93 Difference]: Finished difference Result 1265 states and 3106 transitions. [2022-03-01 16:23:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:23:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:08,979 INFO L225 Difference]: With dead ends: 1265 [2022-03-01 16:23:08,979 INFO L226 Difference]: Without dead ends: 1085 [2022-03-01 16:23:08,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:23:08,980 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 324 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:08,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2486 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:23:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-01 16:23:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-01 16:23:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 2.4826923076923078) internal successors, (2582), 1040 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2582 transitions. [2022-03-01 16:23:08,989 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2582 transitions. Word has length 79 [2022-03-01 16:23:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:08,989 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2582 transitions. [2022-03-01 16:23:08,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2582 transitions. [2022-03-01 16:23:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:08,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:08,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:08,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-01 16:23:08,991 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash -779228170, now seen corresponding path program 66 times [2022-03-01 16:23:08,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:08,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895813577] [2022-03-01 16:23:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:09,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:09,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895813577] [2022-03-01 16:23:09,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895813577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:09,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:09,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:09,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076440035] [2022-03-01 16:23:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:09,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:09,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:09,331 INFO L87 Difference]: Start difference. First operand 1041 states and 2582 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:10,381 INFO L93 Difference]: Finished difference Result 1288 states and 3163 transitions. [2022-03-01 16:23:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:23:10,381 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:10,383 INFO L225 Difference]: With dead ends: 1288 [2022-03-01 16:23:10,383 INFO L226 Difference]: Without dead ends: 1069 [2022-03-01 16:23:10,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:23:10,383 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 319 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:10,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2352 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-03-01 16:23:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1037. [2022-03-01 16:23:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1036 states have (on average 2.4816602316602316) internal successors, (2571), 1036 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 2571 transitions. [2022-03-01 16:23:10,394 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 2571 transitions. Word has length 79 [2022-03-01 16:23:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 2571 transitions. [2022-03-01 16:23:10,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 2571 transitions. [2022-03-01 16:23:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:10,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:10,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:10,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-01 16:23:10,395 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1175838728, now seen corresponding path program 67 times [2022-03-01 16:23:10,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:10,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918072766] [2022-03-01 16:23:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:10,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:10,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918072766] [2022-03-01 16:23:10,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918072766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:10,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:10,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:10,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700065680] [2022-03-01 16:23:10,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:10,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:10,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:10,731 INFO L87 Difference]: Start difference. First operand 1037 states and 2571 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:11,793 INFO L93 Difference]: Finished difference Result 1349 states and 3312 transitions. [2022-03-01 16:23:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:11,795 INFO L225 Difference]: With dead ends: 1349 [2022-03-01 16:23:11,795 INFO L226 Difference]: Without dead ends: 1064 [2022-03-01 16:23:11,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1645, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:23:11,796 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 300 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:11,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2893 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-03-01 16:23:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1033. [2022-03-01 16:23:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 2.4844961240310077) internal successors, (2564), 1032 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2564 transitions. [2022-03-01 16:23:11,805 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2564 transitions. Word has length 79 [2022-03-01 16:23:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:11,805 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2564 transitions. [2022-03-01 16:23:11,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2564 transitions. [2022-03-01 16:23:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:11,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:11,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:11,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-01 16:23:11,806 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1728401762, now seen corresponding path program 68 times [2022-03-01 16:23:11,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:11,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440547185] [2022-03-01 16:23:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:12,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:12,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440547185] [2022-03-01 16:23:12,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440547185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:12,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:12,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:12,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661308181] [2022-03-01 16:23:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:12,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:12,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:12,231 INFO L87 Difference]: Start difference. First operand 1033 states and 2564 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:13,230 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-03-01 16:23:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:23:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:13,232 INFO L225 Difference]: With dead ends: 1287 [2022-03-01 16:23:13,232 INFO L226 Difference]: Without dead ends: 1157 [2022-03-01 16:23:13,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 16:23:13,233 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 260 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:13,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2284 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-01 16:23:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1101. [2022-03-01 16:23:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 2.4936363636363637) internal successors, (2743), 1100 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-01 16:23:13,249 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-01 16:23:13,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:13,249 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-01 16:23:13,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-01 16:23:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:13,250 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:13,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:13,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-01 16:23:13,250 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:13,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1713174368, now seen corresponding path program 69 times [2022-03-01 16:23:13,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:13,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310054524] [2022-03-01 16:23:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:13,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:13,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310054524] [2022-03-01 16:23:13,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310054524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:13,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:13,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:13,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963135507] [2022-03-01 16:23:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:13,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:13,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:13,604 INFO L87 Difference]: Start difference. First operand 1101 states and 2743 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:14,565 INFO L93 Difference]: Finished difference Result 1282 states and 3172 transitions. [2022-03-01 16:23:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:23:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:14,567 INFO L225 Difference]: With dead ends: 1282 [2022-03-01 16:23:14,567 INFO L226 Difference]: Without dead ends: 1184 [2022-03-01 16:23:14,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:14,567 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 286 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2222 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-01 16:23:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1105. [2022-03-01 16:23:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.4909420289855073) internal successors, (2750), 1104 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-03-01 16:23:14,581 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-03-01 16:23:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:14,581 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-03-01 16:23:14,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-03-01 16:23:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:14,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:14,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:14,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-01 16:23:14,582 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1867555650, now seen corresponding path program 70 times [2022-03-01 16:23:14,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:14,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693251614] [2022-03-01 16:23:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:14,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:14,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693251614] [2022-03-01 16:23:14,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693251614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:14,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:14,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:14,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982948966] [2022-03-01 16:23:14,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:14,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:14,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:14,950 INFO L87 Difference]: Start difference. First operand 1105 states and 2750 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:15,922 INFO L93 Difference]: Finished difference Result 1250 states and 3088 transitions. [2022-03-01 16:23:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:15,924 INFO L225 Difference]: With dead ends: 1250 [2022-03-01 16:23:15,924 INFO L226 Difference]: Without dead ends: 1137 [2022-03-01 16:23:15,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:23:15,924 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 262 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:15,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2389 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-03-01 16:23:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1093. [2022-03-01 16:23:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.491758241758242) internal successors, (2721), 1092 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-01 16:23:15,934 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-01 16:23:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:15,934 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-01 16:23:15,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-01 16:23:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:15,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:15,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:15,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-01 16:23:15,936 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1308597058, now seen corresponding path program 71 times [2022-03-01 16:23:15,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:15,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198077106] [2022-03-01 16:23:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:16,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:16,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198077106] [2022-03-01 16:23:16,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198077106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:16,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:16,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:16,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487360770] [2022-03-01 16:23:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:16,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:16,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:16,270 INFO L87 Difference]: Start difference. First operand 1093 states and 2721 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:17,732 INFO L93 Difference]: Finished difference Result 1300 states and 3213 transitions. [2022-03-01 16:23:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:23:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:17,734 INFO L225 Difference]: With dead ends: 1300 [2022-03-01 16:23:17,734 INFO L226 Difference]: Without dead ends: 1202 [2022-03-01 16:23:17,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:23:17,734 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:17,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2526 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:23:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-03-01 16:23:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1117. [2022-03-01 16:23:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.490143369175627) internal successors, (2779), 1116 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-01 16:23:17,744 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-01 16:23:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:17,744 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-01 16:23:17,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-01 16:23:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:17,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:17,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:17,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-01 16:23:17,746 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 7935834, now seen corresponding path program 72 times [2022-03-01 16:23:17,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:17,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016726698] [2022-03-01 16:23:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:18,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:18,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016726698] [2022-03-01 16:23:18,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016726698] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:18,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:18,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:18,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475092347] [2022-03-01 16:23:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:18,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:18,117 INFO L87 Difference]: Start difference. First operand 1117 states and 2779 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:19,082 INFO L93 Difference]: Finished difference Result 1268 states and 3125 transitions. [2022-03-01 16:23:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:19,085 INFO L225 Difference]: With dead ends: 1268 [2022-03-01 16:23:19,085 INFO L226 Difference]: Without dead ends: 1117 [2022-03-01 16:23:19,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:19,085 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 288 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:19,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2499 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-03-01 16:23:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1077. [2022-03-01 16:23:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4879182156133828) internal successors, (2677), 1076 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-01 16:23:19,094 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-01 16:23:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-01 16:23:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-01 16:23:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:19,096 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:19,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:19,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-01 16:23:19,096 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash 862026942, now seen corresponding path program 73 times [2022-03-01 16:23:19,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:19,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675362972] [2022-03-01 16:23:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:19,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:19,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675362972] [2022-03-01 16:23:19,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675362972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:19,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:19,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:19,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452348872] [2022-03-01 16:23:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:19,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:19,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:19,456 INFO L87 Difference]: Start difference. First operand 1077 states and 2677 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:21,593 INFO L93 Difference]: Finished difference Result 1335 states and 3299 transitions. [2022-03-01 16:23:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:23:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:21,595 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:23:21,595 INFO L226 Difference]: Without dead ends: 1237 [2022-03-01 16:23:21,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:23:21,595 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 317 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:21,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2653 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:23:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-01 16:23:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1105. [2022-03-01 16:23:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.48731884057971) internal successors, (2746), 1104 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-03-01 16:23:21,612 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-03-01 16:23:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:21,612 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-03-01 16:23:21,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-03-01 16:23:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:21,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:21,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:21,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-01 16:23:21,613 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2116407462, now seen corresponding path program 74 times [2022-03-01 16:23:21,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:21,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898446869] [2022-03-01 16:23:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:21,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:21,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898446869] [2022-03-01 16:23:21,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898446869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:21,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:21,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:21,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155857406] [2022-03-01 16:23:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:21,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:21,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:21,990 INFO L87 Difference]: Start difference. First operand 1105 states and 2746 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:23,172 INFO L93 Difference]: Finished difference Result 1291 states and 3182 transitions. [2022-03-01 16:23:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:23:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:23,174 INFO L225 Difference]: With dead ends: 1291 [2022-03-01 16:23:23,174 INFO L226 Difference]: Without dead ends: 1156 [2022-03-01 16:23:23,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:23:23,174 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 283 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:23,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2769 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-03-01 16:23:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1081. [2022-03-01 16:23:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4851851851851854) internal successors, (2684), 1080 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-03-01 16:23:23,184 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-03-01 16:23:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:23,184 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-03-01 16:23:23,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-03-01 16:23:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:23,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:23,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:23,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-01 16:23:23,186 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1048044804, now seen corresponding path program 75 times [2022-03-01 16:23:23,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:23,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942182058] [2022-03-01 16:23:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:23,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:23,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942182058] [2022-03-01 16:23:23,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942182058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:23,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:23,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:23,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599560450] [2022-03-01 16:23:23,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:23,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:23,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:23,593 INFO L87 Difference]: Start difference. First operand 1081 states and 2684 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:24,540 INFO L93 Difference]: Finished difference Result 1279 states and 3149 transitions. [2022-03-01 16:23:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:24,551 INFO L225 Difference]: With dead ends: 1279 [2022-03-01 16:23:24,551 INFO L226 Difference]: Without dead ends: 1109 [2022-03-01 16:23:24,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:24,552 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 303 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:24,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2438 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-01 16:23:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1069. [2022-03-01 16:23:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.485955056179775) internal successors, (2655), 1068 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-01 16:23:24,561 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-01 16:23:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:24,561 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-01 16:23:24,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-01 16:23:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:24,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:24,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:24,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-01 16:23:24,562 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash 926730080, now seen corresponding path program 76 times [2022-03-01 16:23:24,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:24,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183283345] [2022-03-01 16:23:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:24,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:24,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:24,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183283345] [2022-03-01 16:23:24,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183283345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:24,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:24,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:24,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963336533] [2022-03-01 16:23:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:24,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:24,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:24,922 INFO L87 Difference]: Start difference. First operand 1069 states and 2655 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:26,266 INFO L93 Difference]: Finished difference Result 1333 states and 3285 transitions. [2022-03-01 16:23:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:23:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:26,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:26,268 INFO L225 Difference]: With dead ends: 1333 [2022-03-01 16:23:26,268 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:23:26,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:23:26,269 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:26,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2824 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:23:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:23:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1117. [2022-03-01 16:23:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.490143369175627) internal successors, (2779), 1116 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-01 16:23:26,289 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-01 16:23:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:26,289 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-01 16:23:26,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-01 16:23:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:26,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:26,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:26,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-01 16:23:26,290 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2051704324, now seen corresponding path program 77 times [2022-03-01 16:23:26,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:26,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988859662] [2022-03-01 16:23:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:26,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:26,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988859662] [2022-03-01 16:23:26,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988859662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:26,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:26,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:26,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491107470] [2022-03-01 16:23:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:26,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:26,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:26,677 INFO L87 Difference]: Start difference. First operand 1117 states and 2779 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:28,309 INFO L93 Difference]: Finished difference Result 1301 states and 3197 transitions. [2022-03-01 16:23:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:23:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:28,311 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:23:28,311 INFO L226 Difference]: Without dead ends: 1166 [2022-03-01 16:23:28,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:23:28,312 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 287 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:28,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2663 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:23:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-01 16:23:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1093. [2022-03-01 16:23:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.4844322344322345) internal successors, (2713), 1092 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-03-01 16:23:28,324 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-03-01 16:23:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:28,324 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-03-01 16:23:28,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-03-01 16:23:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:28,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:28,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:28,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-01 16:23:28,325 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 875257408, now seen corresponding path program 78 times [2022-03-01 16:23:28,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:28,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864803679] [2022-03-01 16:23:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:28,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:28,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864803679] [2022-03-01 16:23:28,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864803679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:28,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:28,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:28,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450926417] [2022-03-01 16:23:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:28,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:28,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:28,678 INFO L87 Difference]: Start difference. First operand 1093 states and 2713 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:29,680 INFO L93 Difference]: Finished difference Result 1277 states and 3131 transitions. [2022-03-01 16:23:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:29,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:29,682 INFO L225 Difference]: With dead ends: 1277 [2022-03-01 16:23:29,682 INFO L226 Difference]: Without dead ends: 1081 [2022-03-01 16:23:29,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:29,682 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 259 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:29,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2433 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-01 16:23:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1053. [2022-03-01 16:23:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4819391634980987) internal successors, (2611), 1052 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-01 16:23:29,691 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-01 16:23:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:29,691 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-01 16:23:29,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-01 16:23:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:29,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:29,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:29,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-01 16:23:29,693 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 951326560, now seen corresponding path program 79 times [2022-03-01 16:23:29,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:29,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018513952] [2022-03-01 16:23:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:30,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:30,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018513952] [2022-03-01 16:23:30,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018513952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:30,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:30,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:30,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050223687] [2022-03-01 16:23:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:30,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:30,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:30,125 INFO L87 Difference]: Start difference. First operand 1053 states and 2611 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:31,762 INFO L93 Difference]: Finished difference Result 1365 states and 3369 transitions. [2022-03-01 16:23:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:23:31,762 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:31,764 INFO L225 Difference]: With dead ends: 1365 [2022-03-01 16:23:31,764 INFO L226 Difference]: Without dead ends: 1267 [2022-03-01 16:23:31,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:23:31,765 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 307 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:31,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 3127 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:23:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-01 16:23:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1105. [2022-03-01 16:23:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.48731884057971) internal successors, (2746), 1104 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-03-01 16:23:31,779 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-03-01 16:23:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:31,780 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-03-01 16:23:31,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-03-01 16:23:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:31,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:31,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:31,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-01 16:23:31,782 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2027107844, now seen corresponding path program 80 times [2022-03-01 16:23:31,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:31,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15417920] [2022-03-01 16:23:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:32,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:32,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15417920] [2022-03-01 16:23:32,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15417920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:32,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:32,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:32,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135521897] [2022-03-01 16:23:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:32,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:32,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:32,289 INFO L87 Difference]: Start difference. First operand 1105 states and 2746 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:33,937 INFO L93 Difference]: Finished difference Result 1321 states and 3252 transitions. [2022-03-01 16:23:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:23:33,937 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:33,939 INFO L225 Difference]: With dead ends: 1321 [2022-03-01 16:23:33,939 INFO L226 Difference]: Without dead ends: 1186 [2022-03-01 16:23:33,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:23:33,940 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 309 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:33,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 3110 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:23:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-01 16:23:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1081. [2022-03-01 16:23:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4814814814814814) internal successors, (2680), 1080 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2680 transitions. [2022-03-01 16:23:33,950 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2680 transitions. Word has length 79 [2022-03-01 16:23:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:33,950 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2680 transitions. [2022-03-01 16:23:33,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2680 transitions. [2022-03-01 16:23:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:33,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:33,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:33,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-01 16:23:33,952 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 899853888, now seen corresponding path program 81 times [2022-03-01 16:23:33,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:33,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138379610] [2022-03-01 16:23:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:34,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:34,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138379610] [2022-03-01 16:23:34,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138379610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:34,263 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:34,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:34,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672226395] [2022-03-01 16:23:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:34,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:34,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:34,263 INFO L87 Difference]: Start difference. First operand 1081 states and 2680 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:35,398 INFO L93 Difference]: Finished difference Result 1285 states and 3153 transitions. [2022-03-01 16:23:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:23:35,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:35,400 INFO L225 Difference]: With dead ends: 1285 [2022-03-01 16:23:35,400 INFO L226 Difference]: Without dead ends: 1105 [2022-03-01 16:23:35,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:23:35,400 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 284 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:35,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2610 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-03-01 16:23:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1057. [2022-03-01 16:23:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.4791666666666665) internal successors, (2618), 1056 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2618 transitions. [2022-03-01 16:23:35,410 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2618 transitions. Word has length 79 [2022-03-01 16:23:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:35,410 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2618 transitions. [2022-03-01 16:23:35,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2618 transitions. [2022-03-01 16:23:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:35,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:35,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:35,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-01 16:23:35,411 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1409621288, now seen corresponding path program 82 times [2022-03-01 16:23:35,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:35,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366966640] [2022-03-01 16:23:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:35,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:35,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366966640] [2022-03-01 16:23:35,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366966640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:35,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:35,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:35,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929324060] [2022-03-01 16:23:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:35,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:35,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:35,830 INFO L87 Difference]: Start difference. First operand 1057 states and 2618 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:36,732 INFO L93 Difference]: Finished difference Result 1300 states and 3188 transitions. [2022-03-01 16:23:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:23:36,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:36,734 INFO L225 Difference]: With dead ends: 1300 [2022-03-01 16:23:36,734 INFO L226 Difference]: Without dead ends: 1073 [2022-03-01 16:23:36,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:23:36,735 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 298 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:36,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2401 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-01 16:23:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1045. [2022-03-01 16:23:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 2.4760536398467434) internal successors, (2585), 1044 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2585 transitions. [2022-03-01 16:23:36,745 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2585 transitions. Word has length 79 [2022-03-01 16:23:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:36,745 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2585 transitions. [2022-03-01 16:23:36,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2585 transitions. [2022-03-01 16:23:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:36,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:36,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:36,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-01 16:23:36,746 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash -944710466, now seen corresponding path program 83 times [2022-03-01 16:23:36,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:36,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822020430] [2022-03-01 16:23:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:36,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:37,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:37,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822020430] [2022-03-01 16:23:37,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822020430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:37,085 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:37,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:37,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781411627] [2022-03-01 16:23:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:37,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:37,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:37,086 INFO L87 Difference]: Start difference. First operand 1045 states and 2585 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:38,910 INFO L93 Difference]: Finished difference Result 1361 states and 3354 transitions. [2022-03-01 16:23:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:23:38,910 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:38,912 INFO L225 Difference]: With dead ends: 1361 [2022-03-01 16:23:38,912 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:23:38,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:23:38,914 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 328 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:38,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2843 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:23:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:23:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1105. [2022-03-01 16:23:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.483695652173913) internal successors, (2742), 1104 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-03-01 16:23:38,926 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-03-01 16:23:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:38,926 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-03-01 16:23:38,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-03-01 16:23:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:38,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:38,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:38,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-01 16:23:38,928 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 371822426, now seen corresponding path program 84 times [2022-03-01 16:23:38,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:38,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991234680] [2022-03-01 16:23:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:39,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:39,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991234680] [2022-03-01 16:23:39,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991234680] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:39,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:39,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:39,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085006053] [2022-03-01 16:23:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:39,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:39,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:39,248 INFO L87 Difference]: Start difference. First operand 1105 states and 2742 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:42,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:23:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:42,502 INFO L93 Difference]: Finished difference Result 1317 states and 3237 transitions. [2022-03-01 16:23:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:23:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:42,504 INFO L225 Difference]: With dead ends: 1317 [2022-03-01 16:23:42,504 INFO L226 Difference]: Without dead ends: 1182 [2022-03-01 16:23:42,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=240, Invalid=2730, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:23:42,504 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 346 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:42,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2689 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:23:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-01 16:23:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1081. [2022-03-01 16:23:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.477777777777778) internal successors, (2676), 1080 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2676 transitions. [2022-03-01 16:23:42,513 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2676 transitions. Word has length 79 [2022-03-01 16:23:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:42,514 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2676 transitions. [2022-03-01 16:23:42,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2676 transitions. [2022-03-01 16:23:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:42,515 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:42,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:42,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-01 16:23:42,515 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash -996183138, now seen corresponding path program 85 times [2022-03-01 16:23:42,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:42,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977112940] [2022-03-01 16:23:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:42,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:42,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:42,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977112940] [2022-03-01 16:23:42,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977112940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:42,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:42,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:42,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365939941] [2022-03-01 16:23:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:42,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:42,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:42,818 INFO L87 Difference]: Start difference. First operand 1081 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:43,799 INFO L93 Difference]: Finished difference Result 1281 states and 3138 transitions. [2022-03-01 16:23:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:23:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:43,800 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 16:23:43,800 INFO L226 Difference]: Without dead ends: 1101 [2022-03-01 16:23:43,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:23:43,801 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 303 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:43,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2611 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-03-01 16:23:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1057. [2022-03-01 16:23:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.475378787878788) internal successors, (2614), 1056 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2614 transitions. [2022-03-01 16:23:43,811 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2614 transitions. Word has length 79 [2022-03-01 16:23:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:43,811 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2614 transitions. [2022-03-01 16:23:43,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2614 transitions. [2022-03-01 16:23:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:43,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:43,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:43,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-01 16:23:43,813 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 989308982, now seen corresponding path program 86 times [2022-03-01 16:23:43,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:43,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912271510] [2022-03-01 16:23:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:44,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:44,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912271510] [2022-03-01 16:23:44,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912271510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:44,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:44,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:44,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646924795] [2022-03-01 16:23:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:44,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:44,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:44,163 INFO L87 Difference]: Start difference. First operand 1057 states and 2614 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:45,122 INFO L93 Difference]: Finished difference Result 1304 states and 3195 transitions. [2022-03-01 16:23:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:23:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:45,124 INFO L225 Difference]: With dead ends: 1304 [2022-03-01 16:23:45,124 INFO L226 Difference]: Without dead ends: 1061 [2022-03-01 16:23:45,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:45,124 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 312 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:45,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2340 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-01 16:23:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-01 16:23:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4795719844357977) internal successors, (2549), 1028 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-01 16:23:45,133 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-01 16:23:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:45,133 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-01 16:23:45,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-01 16:23:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:45,135 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:45,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:45,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-01 16:23:45,135 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1571781226, now seen corresponding path program 87 times [2022-03-01 16:23:45,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:45,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342542759] [2022-03-01 16:23:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:45,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:45,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342542759] [2022-03-01 16:23:45,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342542759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:45,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:45,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:45,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509244797] [2022-03-01 16:23:45,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:45,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:45,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:45,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:45,483 INFO L87 Difference]: Start difference. First operand 1029 states and 2549 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:46,486 INFO L93 Difference]: Finished difference Result 1298 states and 3178 transitions. [2022-03-01 16:23:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:23:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:46,488 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:23:46,488 INFO L226 Difference]: Without dead ends: 1029 [2022-03-01 16:23:46,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:46,489 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:46,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2543 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-03-01 16:23:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1013. [2022-03-01 16:23:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.4792490118577075) internal successors, (2509), 1012 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2509 transitions. [2022-03-01 16:23:46,497 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2509 transitions. Word has length 79 [2022-03-01 16:23:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:46,497 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2509 transitions. [2022-03-01 16:23:46,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2509 transitions. [2022-03-01 16:23:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:46,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:46,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:46,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-01 16:23:46,499 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 881796286, now seen corresponding path program 88 times [2022-03-01 16:23:46,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:46,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781546895] [2022-03-01 16:23:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:46,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:46,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781546895] [2022-03-01 16:23:46,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781546895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:46,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:46,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:23:46,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652412803] [2022-03-01 16:23:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:46,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:23:46,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:23:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:23:46,904 INFO L87 Difference]: Start difference. First operand 1013 states and 2509 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:48,903 INFO L93 Difference]: Finished difference Result 1321 states and 3256 transitions. [2022-03-01 16:23:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:23:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:48,905 INFO L225 Difference]: With dead ends: 1321 [2022-03-01 16:23:48,905 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:23:48,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=2942, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:23:48,906 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 328 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:48,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3121 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:23:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:23:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1077. [2022-03-01 16:23:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4879182156133828) internal successors, (2677), 1076 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-01 16:23:48,916 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-01 16:23:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:48,916 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-01 16:23:48,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-01 16:23:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:48,917 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:48,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:48,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-01 16:23:48,918 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:48,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2096638118, now seen corresponding path program 89 times [2022-03-01 16:23:48,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:48,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219502525] [2022-03-01 16:23:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:48,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:49,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:49,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219502525] [2022-03-01 16:23:49,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219502525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:49,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:49,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:23:49,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306598024] [2022-03-01 16:23:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:49,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:23:49,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:23:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:23:49,335 INFO L87 Difference]: Start difference. First operand 1077 states and 2677 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:52,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:23:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:53,003 INFO L93 Difference]: Finished difference Result 1277 states and 3139 transitions. [2022-03-01 16:23:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:23:53,004 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:53,005 INFO L225 Difference]: With dead ends: 1277 [2022-03-01 16:23:53,005 INFO L226 Difference]: Without dead ends: 1142 [2022-03-01 16:23:53,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=2847, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:23:53,006 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 348 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:53,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2830 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1083 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:23:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-03-01 16:23:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1053. [2022-03-01 16:23:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4819391634980987) internal successors, (2611), 1052 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-01 16:23:53,015 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-01 16:23:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:53,015 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-01 16:23:53,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-01 16:23:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:53,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:53,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:53,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-01 16:23:53,017 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 830323614, now seen corresponding path program 90 times [2022-03-01 16:23:53,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:53,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374185849] [2022-03-01 16:23:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:53,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:53,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374185849] [2022-03-01 16:23:53,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374185849] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:53,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:53,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:23:53,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436153425] [2022-03-01 16:23:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:53,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:23:53,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:23:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:23:53,413 INFO L87 Difference]: Start difference. First operand 1053 states and 2611 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:54,600 INFO L93 Difference]: Finished difference Result 1241 states and 3040 transitions. [2022-03-01 16:23:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:23:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:54,602 INFO L225 Difference]: With dead ends: 1241 [2022-03-01 16:23:54,602 INFO L226 Difference]: Without dead ends: 1061 [2022-03-01 16:23:54,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:23:54,603 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 303 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:54,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2748 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-01 16:23:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-01 16:23:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4795719844357977) internal successors, (2549), 1028 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-01 16:23:54,612 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-01 16:23:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:54,612 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-01 16:23:54,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-01 16:23:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:54,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:54,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:54,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-01 16:23:54,613 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1479151562, now seen corresponding path program 91 times [2022-03-01 16:23:54,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:54,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361335116] [2022-03-01 16:23:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:55,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:55,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361335116] [2022-03-01 16:23:55,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361335116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:55,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:55,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:55,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592295778] [2022-03-01 16:23:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:55,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:55,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:55,049 INFO L87 Difference]: Start difference. First operand 1029 states and 2549 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:55,878 INFO L93 Difference]: Finished difference Result 1264 states and 3097 transitions. [2022-03-01 16:23:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:23:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:55,880 INFO L225 Difference]: With dead ends: 1264 [2022-03-01 16:23:55,880 INFO L226 Difference]: Without dead ends: 1045 [2022-03-01 16:23:55,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:23:55,880 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 311 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:55,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2618 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:23:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-03-01 16:23:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1025. [2022-03-01 16:23:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 2.478515625) internal successors, (2538), 1024 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2538 transitions. [2022-03-01 16:23:55,889 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2538 transitions. Word has length 79 [2022-03-01 16:23:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:55,889 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 2538 transitions. [2022-03-01 16:23:55,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2538 transitions. [2022-03-01 16:23:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:55,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:55,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:55,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-01 16:23:55,891 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 475915336, now seen corresponding path program 92 times [2022-03-01 16:23:55,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:55,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558819417] [2022-03-01 16:23:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:56,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:56,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558819417] [2022-03-01 16:23:56,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558819417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:56,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:56,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:56,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238122789] [2022-03-01 16:23:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:56,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:56,166 INFO L87 Difference]: Start difference. First operand 1025 states and 2538 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:57,042 INFO L93 Difference]: Finished difference Result 1294 states and 3167 transitions. [2022-03-01 16:23:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:23:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:57,044 INFO L225 Difference]: With dead ends: 1294 [2022-03-01 16:23:57,044 INFO L226 Difference]: Without dead ends: 1033 [2022-03-01 16:23:57,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1806, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:23:57,044 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 325 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:57,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2684 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-03-01 16:23:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1017. [2022-03-01 16:23:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 2.4763779527559056) internal successors, (2516), 1016 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2516 transitions. [2022-03-01 16:23:57,054 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2516 transitions. Word has length 79 [2022-03-01 16:23:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:57,054 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2516 transitions. [2022-03-01 16:23:57,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2516 transitions. [2022-03-01 16:23:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:57,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:57,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:57,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-01 16:23:57,055 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1425757590, now seen corresponding path program 93 times [2022-03-01 16:23:57,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:57,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616878650] [2022-03-01 16:23:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:57,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:57,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616878650] [2022-03-01 16:23:57,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616878650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:57,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:57,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:23:57,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420146550] [2022-03-01 16:23:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:57,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:23:57,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:23:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:23:57,472 INFO L87 Difference]: Start difference. First operand 1017 states and 2516 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:58,366 INFO L93 Difference]: Finished difference Result 1289 states and 3147 transitions. [2022-03-01 16:23:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:23:58,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:58,367 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:23:58,367 INFO L226 Difference]: Without dead ends: 991 [2022-03-01 16:23:58,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:23:58,368 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 322 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:58,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2683 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-01 16:23:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-03-01 16:23:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 2.48989898989899) internal successors, (2465), 990 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2465 transitions. [2022-03-01 16:23:58,389 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2465 transitions. Word has length 79 [2022-03-01 16:23:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:58,390 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 2465 transitions. [2022-03-01 16:23:58,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2465 transitions. [2022-03-01 16:23:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:58,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:58,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-01 16:23:58,391 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 192804102, now seen corresponding path program 94 times [2022-03-01 16:23:58,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:58,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426073186] [2022-03-01 16:23:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:58,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:58,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426073186] [2022-03-01 16:23:58,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426073186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:23:58,726 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:23:58,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:23:58,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843853946] [2022-03-01 16:23:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:23:58,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:23:58,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:23:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:23:58,727 INFO L87 Difference]: Start difference. First operand 991 states and 2465 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:59,755 INFO L93 Difference]: Finished difference Result 1337 states and 3346 transitions. [2022-03-01 16:23:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:23:59,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:23:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:59,757 INFO L225 Difference]: With dead ends: 1337 [2022-03-01 16:23:59,757 INFO L226 Difference]: Without dead ends: 1207 [2022-03-01 16:23:59,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:23:59,757 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 304 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:59,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2332 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-01 16:23:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-03-01 16:23:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5081967213114753) internal successors, (2754), 1098 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2754 transitions. [2022-03-01 16:23:59,770 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2754 transitions. Word has length 79 [2022-03-01 16:23:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:59,770 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2754 transitions. [2022-03-01 16:23:59,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2754 transitions. [2022-03-01 16:23:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:23:59,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:59,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:59,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-01 16:23:59,772 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash -660587064, now seen corresponding path program 95 times [2022-03-01 16:23:59,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:59,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613469393] [2022-03-01 16:23:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:00,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:00,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613469393] [2022-03-01 16:24:00,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613469393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:00,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:00,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:00,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446539860] [2022-03-01 16:24:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:00,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:00,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:00,131 INFO L87 Difference]: Start difference. First operand 1099 states and 2754 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:01,425 INFO L93 Difference]: Finished difference Result 1348 states and 3366 transitions. [2022-03-01 16:24:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:24:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:01,427 INFO L225 Difference]: With dead ends: 1348 [2022-03-01 16:24:01,427 INFO L226 Difference]: Without dead ends: 1250 [2022-03-01 16:24:01,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2228, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:24:01,427 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 309 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:01,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2591 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:24:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-01 16:24:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1103. [2022-03-01 16:24:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.5054446460980038) internal successors, (2761), 1102 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2761 transitions. [2022-03-01 16:24:01,437 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2761 transitions. Word has length 79 [2022-03-01 16:24:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:01,437 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2761 transitions. [2022-03-01 16:24:01,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2761 transitions. [2022-03-01 16:24:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:01,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:01,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:01,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-01 16:24:01,439 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash 53650214, now seen corresponding path program 96 times [2022-03-01 16:24:01,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:01,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823425617] [2022-03-01 16:24:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:01,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:01,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:01,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823425617] [2022-03-01 16:24:01,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823425617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:01,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:01,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:01,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544856784] [2022-03-01 16:24:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:01,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:01,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:01,788 INFO L87 Difference]: Start difference. First operand 1103 states and 2761 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:02,951 INFO L93 Difference]: Finished difference Result 1331 states and 3317 transitions. [2022-03-01 16:24:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:24:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:02,953 INFO L225 Difference]: With dead ends: 1331 [2022-03-01 16:24:02,953 INFO L226 Difference]: Without dead ends: 1218 [2022-03-01 16:24:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:24:02,954 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 341 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:02,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2478 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-03-01 16:24:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1091. [2022-03-01 16:24:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5027522935779816) internal successors, (2728), 1090 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2728 transitions. [2022-03-01 16:24:02,968 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2728 transitions. Word has length 79 [2022-03-01 16:24:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:02,968 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2728 transitions. [2022-03-01 16:24:02,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2728 transitions. [2022-03-01 16:24:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:02,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:02,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:02,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-01 16:24:02,969 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 379098440, now seen corresponding path program 97 times [2022-03-01 16:24:02,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:02,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312824945] [2022-03-01 16:24:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:03,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:03,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312824945] [2022-03-01 16:24:03,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312824945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:03,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:03,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:03,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387732523] [2022-03-01 16:24:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:03,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:03,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:03,287 INFO L87 Difference]: Start difference. First operand 1091 states and 2728 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:04,172 INFO L93 Difference]: Finished difference Result 1309 states and 3257 transitions. [2022-03-01 16:24:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:24:04,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:04,174 INFO L225 Difference]: With dead ends: 1309 [2022-03-01 16:24:04,174 INFO L226 Difference]: Without dead ends: 1159 [2022-03-01 16:24:04,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:24:04,174 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 281 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:04,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2471 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-03-01 16:24:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1087. [2022-03-01 16:24:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.501841620626151) internal successors, (2717), 1086 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2717 transitions. [2022-03-01 16:24:04,190 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2717 transitions. Word has length 79 [2022-03-01 16:24:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:04,190 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2717 transitions. [2022-03-01 16:24:04,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2717 transitions. [2022-03-01 16:24:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:04,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:04,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:04,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-01 16:24:04,192 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1240680774, now seen corresponding path program 98 times [2022-03-01 16:24:04,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:04,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780482217] [2022-03-01 16:24:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:04,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:04,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780482217] [2022-03-01 16:24:04,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780482217] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:04,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:04,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:04,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902540949] [2022-03-01 16:24:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:04,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:04,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:04,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:04,553 INFO L87 Difference]: Start difference. First operand 1087 states and 2717 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:07,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:24:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:07,720 INFO L93 Difference]: Finished difference Result 1401 states and 3455 transitions. [2022-03-01 16:24:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:07,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:07,722 INFO L225 Difference]: With dead ends: 1401 [2022-03-01 16:24:07,722 INFO L226 Difference]: Without dead ends: 1303 [2022-03-01 16:24:07,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:24:07,722 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 310 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:07,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2544 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:24:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-01 16:24:07,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1099. [2022-03-01 16:24:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5009107468123863) internal successors, (2746), 1098 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-01 16:24:07,733 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-01 16:24:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:07,733 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-01 16:24:07,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-01 16:24:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:07,734 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:07,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:07,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-01 16:24:07,734 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1954918052, now seen corresponding path program 99 times [2022-03-01 16:24:07,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:07,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230226669] [2022-03-01 16:24:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:08,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:08,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230226669] [2022-03-01 16:24:08,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230226669] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:08,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:08,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:08,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390447676] [2022-03-01 16:24:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:08,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:08,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:08,075 INFO L87 Difference]: Start difference. First operand 1099 states and 2746 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:09,126 INFO L93 Difference]: Finished difference Result 1321 states and 3277 transitions. [2022-03-01 16:24:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:24:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:09,128 INFO L225 Difference]: With dead ends: 1321 [2022-03-01 16:24:09,128 INFO L226 Difference]: Without dead ends: 1146 [2022-03-01 16:24:09,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:24:09,129 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 283 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:09,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2259 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-03-01 16:24:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1063. [2022-03-01 16:24:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.5) internal successors, (2655), 1062 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2655 transitions. [2022-03-01 16:24:09,139 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2655 transitions. Word has length 79 [2022-03-01 16:24:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:09,139 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2655 transitions. [2022-03-01 16:24:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2655 transitions. [2022-03-01 16:24:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:09,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:09,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:09,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-01 16:24:09,140 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash 846263976, now seen corresponding path program 100 times [2022-03-01 16:24:09,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:09,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858865159] [2022-03-01 16:24:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:09,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:09,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858865159] [2022-03-01 16:24:09,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858865159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:09,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:09,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:09,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790148357] [2022-03-01 16:24:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:09,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:09,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:09,475 INFO L87 Difference]: Start difference. First operand 1063 states and 2655 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:10,462 INFO L93 Difference]: Finished difference Result 1301 states and 3239 transitions. [2022-03-01 16:24:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:10,463 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:10,464 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:24:10,464 INFO L226 Difference]: Without dead ends: 1171 [2022-03-01 16:24:10,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:24:10,465 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 251 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:10,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2381 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-01 16:24:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-03-01 16:24:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.497227356746765) internal successors, (2702), 1082 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-01 16:24:10,475 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-01 16:24:10,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:10,476 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-01 16:24:10,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-01 16:24:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:10,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:10,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:10,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-01 16:24:10,477 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash -7127190, now seen corresponding path program 101 times [2022-03-01 16:24:10,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:10,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632163754] [2022-03-01 16:24:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:10,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:10,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632163754] [2022-03-01 16:24:10,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632163754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:10,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:10,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:10,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564361255] [2022-03-01 16:24:10,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:10,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:10,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:10,835 INFO L87 Difference]: Start difference. First operand 1083 states and 2702 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:11,969 INFO L93 Difference]: Finished difference Result 1292 states and 3208 transitions. [2022-03-01 16:24:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:24:11,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:11,971 INFO L225 Difference]: With dead ends: 1292 [2022-03-01 16:24:11,971 INFO L226 Difference]: Without dead ends: 1194 [2022-03-01 16:24:11,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:24:11,972 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 296 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:11,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2515 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-01 16:24:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-03-01 16:24:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-01 16:24:11,981 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-01 16:24:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:11,982 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-01 16:24:11,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-01 16:24:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:11,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:11,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:11,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-01 16:24:11,983 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 707110088, now seen corresponding path program 102 times [2022-03-01 16:24:11,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:11,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235469056] [2022-03-01 16:24:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:12,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:12,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235469056] [2022-03-01 16:24:12,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235469056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:12,327 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:12,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:12,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677848529] [2022-03-01 16:24:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:12,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:12,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:12,327 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:13,366 INFO L93 Difference]: Finished difference Result 1275 states and 3159 transitions. [2022-03-01 16:24:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:24:13,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:13,367 INFO L225 Difference]: With dead ends: 1275 [2022-03-01 16:24:13,367 INFO L226 Difference]: Without dead ends: 1162 [2022-03-01 16:24:13,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:24:13,368 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 324 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:13,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2322 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-01 16:24:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-03-01 16:24:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4990689013035383) internal successors, (2684), 1074 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-03-01 16:24:13,378 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-03-01 16:24:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:13,378 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-03-01 16:24:13,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-03-01 16:24:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:13,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:13,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:13,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-01 16:24:13,379 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:13,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1032558314, now seen corresponding path program 103 times [2022-03-01 16:24:13,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:13,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895034201] [2022-03-01 16:24:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:13,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:13,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895034201] [2022-03-01 16:24:13,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895034201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:13,700 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:13,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:13,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935911345] [2022-03-01 16:24:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:13,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:13,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:13,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:13,703 INFO L87 Difference]: Start difference. First operand 1075 states and 2684 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:14,582 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-01 16:24:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:24:14,582 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:14,584 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 16:24:14,584 INFO L226 Difference]: Without dead ends: 1131 [2022-03-01 16:24:14,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:24:14,586 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 256 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:14,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2163 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-01 16:24:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1071. [2022-03-01 16:24:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4981308411214953) internal successors, (2673), 1070 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2673 transitions. [2022-03-01 16:24:14,597 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2673 transitions. Word has length 79 [2022-03-01 16:24:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:14,597 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2673 transitions. [2022-03-01 16:24:14,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2673 transitions. [2022-03-01 16:24:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:14,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:14,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:14,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-01 16:24:14,600 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:14,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 325977350, now seen corresponding path program 104 times [2022-03-01 16:24:14,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:14,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773751106] [2022-03-01 16:24:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:14,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:14,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:14,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773751106] [2022-03-01 16:24:14,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773751106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:14,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:14,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:14,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018710787] [2022-03-01 16:24:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:14,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:14,948 INFO L87 Difference]: Start difference. First operand 1071 states and 2673 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:15,808 INFO L93 Difference]: Finished difference Result 1305 states and 3234 transitions. [2022-03-01 16:24:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:24:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:15,810 INFO L225 Difference]: With dead ends: 1305 [2022-03-01 16:24:15,810 INFO L226 Difference]: Without dead ends: 1103 [2022-03-01 16:24:15,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 16:24:15,810 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 253 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:15,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2323 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-01 16:24:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-01 16:24:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4961759082217974) internal successors, (2611), 1046 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2611 transitions. [2022-03-01 16:24:15,820 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2611 transitions. Word has length 79 [2022-03-01 16:24:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:15,820 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2611 transitions. [2022-03-01 16:24:15,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2611 transitions. [2022-03-01 16:24:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:15,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:15,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:15,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-01 16:24:15,822 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1521068648, now seen corresponding path program 105 times [2022-03-01 16:24:15,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:15,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699040645] [2022-03-01 16:24:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:16,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:16,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699040645] [2022-03-01 16:24:16,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699040645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:16,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:16,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:16,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185053362] [2022-03-01 16:24:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:16,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:16,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:16,192 INFO L87 Difference]: Start difference. First operand 1047 states and 2611 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:17,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:17,611 INFO L93 Difference]: Finished difference Result 1329 states and 3316 transitions. [2022-03-01 16:24:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:24:17,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:17,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:17,613 INFO L225 Difference]: With dead ends: 1329 [2022-03-01 16:24:17,613 INFO L226 Difference]: Without dead ends: 1199 [2022-03-01 16:24:17,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=2321, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:24:17,614 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 312 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:17,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2524 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:24:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-03-01 16:24:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1087. [2022-03-01 16:24:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-01 16:24:17,624 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-01 16:24:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-01 16:24:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-01 16:24:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:17,627 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:17,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:17,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-01 16:24:17,627 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 667677482, now seen corresponding path program 106 times [2022-03-01 16:24:17,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:17,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027487467] [2022-03-01 16:24:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:18,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:18,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027487467] [2022-03-01 16:24:18,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027487467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:18,000 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:18,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:18,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027705931] [2022-03-01 16:24:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:18,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:18,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:18,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:18,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:18,001 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:19,115 INFO L93 Difference]: Finished difference Result 1320 states and 3285 transitions. [2022-03-01 16:24:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:24:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:19,117 INFO L225 Difference]: With dead ends: 1320 [2022-03-01 16:24:19,117 INFO L226 Difference]: Without dead ends: 1222 [2022-03-01 16:24:19,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:24:19,118 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 290 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:19,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2502 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-01 16:24:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1091. [2022-03-01 16:24:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-01 16:24:19,129 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-01 16:24:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:19,129 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-01 16:24:19,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-01 16:24:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:19,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:19,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:19,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-01 16:24:19,130 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1381914760, now seen corresponding path program 107 times [2022-03-01 16:24:19,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:19,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398160463] [2022-03-01 16:24:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:19,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:19,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398160463] [2022-03-01 16:24:19,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398160463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:19,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:19,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:19,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135452842] [2022-03-01 16:24:19,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:19,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:19,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:19,485 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:20,519 INFO L93 Difference]: Finished difference Result 1303 states and 3236 transitions. [2022-03-01 16:24:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:24:20,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:20,521 INFO L225 Difference]: With dead ends: 1303 [2022-03-01 16:24:20,521 INFO L226 Difference]: Without dead ends: 1190 [2022-03-01 16:24:20,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:24:20,521 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 340 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:20,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2661 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-01 16:24:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-03-01 16:24:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4925788497217067) internal successors, (2687), 1078 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-01 16:24:20,537 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-01 16:24:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:20,537 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-01 16:24:20,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-01 16:24:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:20,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:20,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:20,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-01 16:24:20,539 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1707362986, now seen corresponding path program 108 times [2022-03-01 16:24:20,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:20,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519715900] [2022-03-01 16:24:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:20,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:20,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:20,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519715900] [2022-03-01 16:24:20,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519715900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:20,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:20,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:20,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186615232] [2022-03-01 16:24:20,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:20,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:20,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:20,943 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:22,007 INFO L93 Difference]: Finished difference Result 1317 states and 3267 transitions. [2022-03-01 16:24:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:24:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:22,009 INFO L225 Difference]: With dead ends: 1317 [2022-03-01 16:24:22,009 INFO L226 Difference]: Without dead ends: 1167 [2022-03-01 16:24:22,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:24:22,010 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 294 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:22,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2552 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-01 16:24:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1075. [2022-03-01 16:24:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:24:22,020 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:24:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:22,020 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:24:22,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:24:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:22,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:22,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:22,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-01 16:24:22,022 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1726021976, now seen corresponding path program 109 times [2022-03-01 16:24:22,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:22,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585772730] [2022-03-01 16:24:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:22,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:22,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585772730] [2022-03-01 16:24:22,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585772730] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:22,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:22,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:22,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647910444] [2022-03-01 16:24:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:22,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:22,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:22,367 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:24,261 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-01 16:24:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:24:24,261 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:24,263 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:24:24,263 INFO L226 Difference]: Without dead ends: 1200 [2022-03-01 16:24:24,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:24:24,263 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 293 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:24,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2427 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:24:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-01 16:24:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-03-01 16:24:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:24:24,275 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:24:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:24,275 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:24:24,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:24:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:24,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:24,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:24,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-01 16:24:24,276 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -409489084, now seen corresponding path program 110 times [2022-03-01 16:24:24,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:24,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798451814] [2022-03-01 16:24:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:24,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:24,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798451814] [2022-03-01 16:24:24,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798451814] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:24,651 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:24,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:24,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246586068] [2022-03-01 16:24:24,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:24,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:24,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:24,652 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:25,648 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-01 16:24:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:24:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:25,650 INFO L225 Difference]: With dead ends: 1266 [2022-03-01 16:24:25,650 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 16:24:25,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:24:25,650 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 292 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:25,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2271 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 16:24:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-01 16:24:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.493333333333333) internal successors, (2618), 1050 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2618 transitions. [2022-03-01 16:24:25,660 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2618 transitions. Word has length 79 [2022-03-01 16:24:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2618 transitions. [2022-03-01 16:24:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2618 transitions. [2022-03-01 16:24:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:25,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:25,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:25,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-01 16:24:25,662 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 924168038, now seen corresponding path program 111 times [2022-03-01 16:24:25,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:25,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306693960] [2022-03-01 16:24:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:26,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:26,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306693960] [2022-03-01 16:24:26,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306693960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:26,012 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:26,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:26,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48505395] [2022-03-01 16:24:26,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:26,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:26,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:26,013 INFO L87 Difference]: Start difference. First operand 1051 states and 2618 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:27,091 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-01 16:24:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:24:27,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:27,093 INFO L225 Difference]: With dead ends: 1285 [2022-03-01 16:24:27,093 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:24:27,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:24:27,093 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 243 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:27,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2411 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:24:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-01 16:24:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-01 16:24:27,103 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-01 16:24:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:27,103 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-01 16:24:27,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-01 16:24:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:27,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:27,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-01 16:24:27,104 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash 70776872, now seen corresponding path program 112 times [2022-03-01 16:24:27,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:27,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492714703] [2022-03-01 16:24:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:27,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:27,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492714703] [2022-03-01 16:24:27,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492714703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:27,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:27,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:27,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884690289] [2022-03-01 16:24:27,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:27,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:27,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:27,445 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:28,451 INFO L93 Difference]: Finished difference Result 1272 states and 3149 transitions. [2022-03-01 16:24:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:28,453 INFO L225 Difference]: With dead ends: 1272 [2022-03-01 16:24:28,453 INFO L226 Difference]: Without dead ends: 1174 [2022-03-01 16:24:28,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:24:28,454 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 248 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:28,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2320 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-01 16:24:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1087. [2022-03-01 16:24:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-01 16:24:28,463 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-01 16:24:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:28,464 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-01 16:24:28,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-01 16:24:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:28,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:28,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:28,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-01 16:24:28,465 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 785014150, now seen corresponding path program 113 times [2022-03-01 16:24:28,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:28,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473656281] [2022-03-01 16:24:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:28,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:28,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473656281] [2022-03-01 16:24:28,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473656281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:28,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:28,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:28,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531641212] [2022-03-01 16:24:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:28,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:28,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:28,779 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:29,733 INFO L93 Difference]: Finished difference Result 1240 states and 3065 transitions. [2022-03-01 16:24:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:24:29,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:29,735 INFO L225 Difference]: With dead ends: 1240 [2022-03-01 16:24:29,735 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 16:24:29,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:24:29,735 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 305 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:29,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2262 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 16:24:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-01 16:24:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:24:29,745 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:24:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:29,745 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:24:29,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:24:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:29,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:29,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:29,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-01 16:24:29,747 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1343972742, now seen corresponding path program 114 times [2022-03-01 16:24:29,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:29,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322562241] [2022-03-01 16:24:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:30,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:30,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322562241] [2022-03-01 16:24:30,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322562241] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:30,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:30,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:30,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133750710] [2022-03-01 16:24:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:30,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:30,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:30,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:30,101 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:32,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:24:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:32,618 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-03-01 16:24:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:32,620 INFO L225 Difference]: With dead ends: 1290 [2022-03-01 16:24:32,620 INFO L226 Difference]: Without dead ends: 1192 [2022-03-01 16:24:32,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:24:32,621 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 300 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:32,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2382 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-01 16:24:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-01 16:24:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1099. [2022-03-01 16:24:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:24:32,631 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:24:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:32,631 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:24:32,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:24:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:32,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:32,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:32,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-01 16:24:32,632 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1634461662, now seen corresponding path program 115 times [2022-03-01 16:24:32,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:32,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292270920] [2022-03-01 16:24:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:32,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:32,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292270920] [2022-03-01 16:24:32,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292270920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:32,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:32,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:32,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259407433] [2022-03-01 16:24:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:32,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:32,964 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:33,901 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-03-01 16:24:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:24:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:33,903 INFO L225 Difference]: With dead ends: 1258 [2022-03-01 16:24:33,903 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 16:24:33,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:24:33,904 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 253 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:33,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2568 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 16:24:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1059. [2022-03-01 16:24:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-01 16:24:33,913 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-01 16:24:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:33,913 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-01 16:24:33,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-01 16:24:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:33,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:33,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:33,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-01 16:24:33,915 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:33,915 INFO L85 PathProgramCache]: Analyzing trace with hash -780370554, now seen corresponding path program 116 times [2022-03-01 16:24:33,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:33,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398648612] [2022-03-01 16:24:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:33,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:34,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:34,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398648612] [2022-03-01 16:24:34,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398648612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:34,264 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:34,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:34,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414265697] [2022-03-01 16:24:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:34,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:34,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:34,264 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:37,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:24:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:37,634 INFO L93 Difference]: Finished difference Result 1389 states and 3402 transitions. [2022-03-01 16:24:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:24:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:37,636 INFO L225 Difference]: With dead ends: 1389 [2022-03-01 16:24:37,636 INFO L226 Difference]: Without dead ends: 1291 [2022-03-01 16:24:37,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:24:37,636 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 360 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:37,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2647 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 988 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:24:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-03-01 16:24:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1075. [2022-03-01 16:24:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4878957169459963) internal successors, (2672), 1074 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-01 16:24:37,646 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-01 16:24:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:37,646 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-01 16:24:37,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-01 16:24:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:37,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:37,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:37,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-01 16:24:37,655 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash -66133276, now seen corresponding path program 117 times [2022-03-01 16:24:37,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:37,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453642797] [2022-03-01 16:24:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:38,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:38,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453642797] [2022-03-01 16:24:38,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453642797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:38,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:38,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:38,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567528546] [2022-03-01 16:24:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:38,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:38,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:38,022 INFO L87 Difference]: Start difference. First operand 1075 states and 2672 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:39,227 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-03-01 16:24:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:24:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:39,229 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 16:24:39,229 INFO L226 Difference]: Without dead ends: 1130 [2022-03-01 16:24:39,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:24:39,229 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 292 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:39,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2847 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-03-01 16:24:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1063. [2022-03-01 16:24:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-01 16:24:39,239 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-01 16:24:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:39,240 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-01 16:24:39,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-01 16:24:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:39,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:39,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:39,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-01 16:24:39,241 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash -594352692, now seen corresponding path program 118 times [2022-03-01 16:24:39,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:39,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501547954] [2022-03-01 16:24:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:39,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:39,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501547954] [2022-03-01 16:24:39,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501547954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:39,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:39,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:39,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988412358] [2022-03-01 16:24:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:39,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:39,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:39,605 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:40,592 INFO L93 Difference]: Finished difference Result 1253 states and 3082 transitions. [2022-03-01 16:24:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:24:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:40,593 INFO L225 Difference]: With dead ends: 1253 [2022-03-01 16:24:40,594 INFO L226 Difference]: Without dead ends: 1071 [2022-03-01 16:24:40,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:24:40,594 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 263 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:40,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2583 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-01 16:24:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1039. [2022-03-01 16:24:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.494219653179191) internal successors, (2589), 1038 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2589 transitions. [2022-03-01 16:24:40,603 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2589 transitions. Word has length 79 [2022-03-01 16:24:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2589 transitions. [2022-03-01 16:24:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2589 transitions. [2022-03-01 16:24:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:40,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:40,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:40,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-01 16:24:40,605 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -594705146, now seen corresponding path program 119 times [2022-03-01 16:24:40,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:40,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166190783] [2022-03-01 16:24:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:40,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:40,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166190783] [2022-03-01 16:24:40,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166190783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:40,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:40,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:40,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450371337] [2022-03-01 16:24:40,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:40,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:40,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:40,935 INFO L87 Difference]: Start difference. First operand 1039 states and 2589 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:42,339 INFO L93 Difference]: Finished difference Result 1325 states and 3305 transitions. [2022-03-01 16:24:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:24:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:42,341 INFO L225 Difference]: With dead ends: 1325 [2022-03-01 16:24:42,341 INFO L226 Difference]: Without dead ends: 1195 [2022-03-01 16:24:42,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:24:42,342 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 314 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:42,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2694 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:24:42,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-01 16:24:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-03-01 16:24:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5009107468123863) internal successors, (2746), 1098 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-01 16:24:42,352 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-01 16:24:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:42,352 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-01 16:24:42,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-01 16:24:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:42,353 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:42,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:42,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-01 16:24:42,353 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1448096312, now seen corresponding path program 120 times [2022-03-01 16:24:42,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:42,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540773679] [2022-03-01 16:24:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:42,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:42,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540773679] [2022-03-01 16:24:42,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540773679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:42,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:42,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:42,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804541095] [2022-03-01 16:24:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:42,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:42,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:42,714 INFO L87 Difference]: Start difference. First operand 1099 states and 2746 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:44,695 INFO L93 Difference]: Finished difference Result 1324 states and 3296 transitions. [2022-03-01 16:24:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:24:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:44,697 INFO L225 Difference]: With dead ends: 1324 [2022-03-01 16:24:44,697 INFO L226 Difference]: Without dead ends: 1226 [2022-03-01 16:24:44,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:24:44,697 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 323 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:44,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2550 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:24:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-03-01 16:24:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1103. [2022-03-01 16:24:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4981851179673322) internal successors, (2753), 1102 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2753 transitions. [2022-03-01 16:24:44,708 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2753 transitions. Word has length 79 [2022-03-01 16:24:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2753 transitions. [2022-03-01 16:24:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2753 transitions. [2022-03-01 16:24:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:44,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:44,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:44,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-01 16:24:44,709 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -733859034, now seen corresponding path program 121 times [2022-03-01 16:24:44,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:44,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306965981] [2022-03-01 16:24:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:45,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:45,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306965981] [2022-03-01 16:24:45,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306965981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:45,109 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:45,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:45,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703929625] [2022-03-01 16:24:45,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:45,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:45,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:45,110 INFO L87 Difference]: Start difference. First operand 1103 states and 2753 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:46,434 INFO L93 Difference]: Finished difference Result 1307 states and 3247 transitions. [2022-03-01 16:24:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:24:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:46,436 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:24:46,436 INFO L226 Difference]: Without dead ends: 1194 [2022-03-01 16:24:46,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:24:46,437 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 348 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:46,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2479 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:24:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-01 16:24:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-03-01 16:24:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-01 16:24:46,459 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-01 16:24:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:46,459 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-01 16:24:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-01 16:24:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:46,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:46,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-01 16:24:46,461 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:46,461 INFO L85 PathProgramCache]: Analyzing trace with hash -408410808, now seen corresponding path program 122 times [2022-03-01 16:24:46,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:46,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646107261] [2022-03-01 16:24:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:46,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:46,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:46,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646107261] [2022-03-01 16:24:46,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646107261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:46,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:46,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:24:46,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145516958] [2022-03-01 16:24:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:46,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:24:46,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:24:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:24:46,742 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:48,067 INFO L93 Difference]: Finished difference Result 1301 states and 3227 transitions. [2022-03-01 16:24:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:24:48,067 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:48,068 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:24:48,068 INFO L226 Difference]: Without dead ends: 1151 [2022-03-01 16:24:48,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:24:48,069 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 290 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:48,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2583 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:24:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-01 16:24:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1087. [2022-03-01 16:24:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-01 16:24:48,079 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-01 16:24:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:48,079 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-01 16:24:48,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-01 16:24:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:48,080 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:48,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-01 16:24:48,080 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:48,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash 453171526, now seen corresponding path program 123 times [2022-03-01 16:24:48,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:48,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914396183] [2022-03-01 16:24:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:48,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:48,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914396183] [2022-03-01 16:24:48,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914396183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:48,365 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:48,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:48,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138794480] [2022-03-01 16:24:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:48,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:48,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:48,366 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:49,351 INFO L93 Difference]: Finished difference Result 1306 states and 3234 transitions. [2022-03-01 16:24:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:24:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:49,353 INFO L225 Difference]: With dead ends: 1306 [2022-03-01 16:24:49,353 INFO L226 Difference]: Without dead ends: 1208 [2022-03-01 16:24:49,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:24:49,353 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 253 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:49,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2581 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-03-01 16:24:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1111. [2022-03-01 16:24:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-01 16:24:49,363 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-01 16:24:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:49,363 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-01 16:24:49,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:49,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-01 16:24:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:49,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:49,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-01 16:24:49,365 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1769704418, now seen corresponding path program 124 times [2022-03-01 16:24:49,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:49,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085095123] [2022-03-01 16:24:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:49,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:49,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085095123] [2022-03-01 16:24:49,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085095123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:49,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:49,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:49,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093710125] [2022-03-01 16:24:49,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:49,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:49,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:49,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:49,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:49,674 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:52,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:24:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:53,019 INFO L93 Difference]: Finished difference Result 1274 states and 3146 transitions. [2022-03-01 16:24:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:24:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:53,021 INFO L225 Difference]: With dead ends: 1274 [2022-03-01 16:24:53,021 INFO L226 Difference]: Without dead ends: 1115 [2022-03-01 16:24:53,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:24:53,022 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 275 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:53,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2437 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-01 16:24:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-01 16:24:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-01 16:24:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.492467043314501) internal successors, (2647), 1062 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-03-01 16:24:53,031 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-03-01 16:24:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:53,032 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-03-01 16:24:53,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-03-01 16:24:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:53,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:53,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:53,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-01 16:24:53,034 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -253094584, now seen corresponding path program 125 times [2022-03-01 16:24:53,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:53,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106810619] [2022-03-01 16:24:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:53,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:53,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106810619] [2022-03-01 16:24:53,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106810619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:53,356 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:53,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:53,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13539704] [2022-03-01 16:24:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:53,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:53,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:53,357 INFO L87 Difference]: Start difference. First operand 1063 states and 2647 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:54,368 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-03-01 16:24:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:24:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:54,370 INFO L225 Difference]: With dead ends: 1269 [2022-03-01 16:24:54,370 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:24:54,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:24:54,371 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 240 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:54,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 2492 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:24:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1087. [2022-03-01 16:24:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-01 16:24:54,380 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-01 16:24:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:54,381 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-01 16:24:54,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-01 16:24:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:54,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:54,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-03-01 16:24:54,386 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -619989014, now seen corresponding path program 126 times [2022-03-01 16:24:54,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:54,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888849997] [2022-03-01 16:24:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:54,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:54,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888849997] [2022-03-01 16:24:54,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888849997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:54,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:54,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:54,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684193697] [2022-03-01 16:24:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:54,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:54,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:54,755 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:55,787 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-03-01 16:24:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:55,788 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:55,789 INFO L225 Difference]: With dead ends: 1280 [2022-03-01 16:24:55,789 INFO L226 Difference]: Without dead ends: 1182 [2022-03-01 16:24:55,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:24:55,790 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 271 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:55,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2242 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-01 16:24:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1091. [2022-03-01 16:24:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.491743119266055) internal successors, (2716), 1090 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-03-01 16:24:55,800 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-03-01 16:24:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:55,800 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-03-01 16:24:55,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-03-01 16:24:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:55,801 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:55,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-01 16:24:55,801 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 94248264, now seen corresponding path program 127 times [2022-03-01 16:24:55,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:55,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475994174] [2022-03-01 16:24:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:56,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:56,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475994174] [2022-03-01 16:24:56,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475994174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:56,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:56,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:56,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362052894] [2022-03-01 16:24:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:56,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:56,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:56,130 INFO L87 Difference]: Start difference. First operand 1091 states and 2716 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:57,137 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-03-01 16:24:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:24:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:57,139 INFO L225 Difference]: With dead ends: 1248 [2022-03-01 16:24:57,139 INFO L226 Difference]: Without dead ends: 1139 [2022-03-01 16:24:57,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:24:57,140 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 283 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:57,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2289 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-01 16:24:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-03-01 16:24:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-01 16:24:57,149 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-01 16:24:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:57,149 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-01 16:24:57,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-01 16:24:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:57,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:57,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:57,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-01 16:24:57,153 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash 564939078, now seen corresponding path program 128 times [2022-03-01 16:24:57,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:57,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222720442] [2022-03-01 16:24:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:57,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:57,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222720442] [2022-03-01 16:24:57,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222720442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:57,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:57,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:57,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841195577] [2022-03-01 16:24:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:57,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:57,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:57,522 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:58,623 INFO L93 Difference]: Finished difference Result 1302 states and 3223 transitions. [2022-03-01 16:24:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:24:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:24:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:58,625 INFO L225 Difference]: With dead ends: 1302 [2022-03-01 16:24:58,625 INFO L226 Difference]: Without dead ends: 1204 [2022-03-01 16:24:58,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:24:58,626 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 253 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:58,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2523 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-03-01 16:24:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1107. [2022-03-01 16:24:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.491862567811935) internal successors, (2756), 1106 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-01 16:24:58,638 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-01 16:24:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:58,638 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-01 16:24:58,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-01 16:24:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:24:58,640 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:58,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-01 16:24:58,641 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1881471970, now seen corresponding path program 129 times [2022-03-01 16:24:58,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:58,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487352421] [2022-03-01 16:24:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:58,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:58,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:58,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487352421] [2022-03-01 16:24:58,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487352421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:58,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:24:58,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:24:58,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289981324] [2022-03-01 16:24:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:58,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:24:58,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:24:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:24:58,979 INFO L87 Difference]: Start difference. First operand 1107 states and 2756 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:00,070 INFO L93 Difference]: Finished difference Result 1270 states and 3135 transitions. [2022-03-01 16:25:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:25:00,070 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:00,072 INFO L225 Difference]: With dead ends: 1270 [2022-03-01 16:25:00,072 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 16:25:00,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:25:00,072 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 275 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:00,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2390 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 16:25:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-01 16:25:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:25:00,083 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:25:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:00,083 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:25:00,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:25:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:00,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:00,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:00,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-01 16:25:00,084 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1398822948, now seen corresponding path program 130 times [2022-03-01 16:25:00,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:00,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117251995] [2022-03-01 16:25:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:00,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:00,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117251995] [2022-03-01 16:25:00,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117251995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:00,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:00,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:00,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063400090] [2022-03-01 16:25:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:00,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:00,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:00,370 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:03,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:03,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:03,796 INFO L93 Difference]: Finished difference Result 1345 states and 3331 transitions. [2022-03-01 16:25:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:25:03,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:03,798 INFO L225 Difference]: With dead ends: 1345 [2022-03-01 16:25:03,798 INFO L226 Difference]: Without dead ends: 1247 [2022-03-01 16:25:03,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:25:03,799 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 331 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:03,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2695 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:25:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-01 16:25:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1103. [2022-03-01 16:25:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-01 16:25:03,810 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-01 16:25:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:03,810 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-01 16:25:03,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-01 16:25:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:03,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:03,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-03-01 16:25:03,811 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1579611456, now seen corresponding path program 131 times [2022-03-01 16:25:03,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:03,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691110398] [2022-03-01 16:25:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:04,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:04,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691110398] [2022-03-01 16:25:04,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691110398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:04,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:04,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:04,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096309576] [2022-03-01 16:25:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:04,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:04,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:04,079 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:05,115 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-03-01 16:25:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:05,117 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:25:05,117 INFO L226 Difference]: Without dead ends: 1166 [2022-03-01 16:25:05,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:05,118 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 311 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:05,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2550 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:25:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-01 16:25:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1079. [2022-03-01 16:25:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-01 16:25:05,127 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-01 16:25:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:05,127 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-01 16:25:05,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-01 16:25:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:05,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:05,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:05,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-01 16:25:05,128 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1584840810, now seen corresponding path program 132 times [2022-03-01 16:25:05,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:05,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190228602] [2022-03-01 16:25:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:05,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:05,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:05,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190228602] [2022-03-01 16:25:05,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190228602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:05,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:05,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:05,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374791138] [2022-03-01 16:25:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:05,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:05,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:05,454 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:06,399 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-01 16:25:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:25:06,400 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:06,401 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:25:06,401 INFO L226 Difference]: Without dead ends: 1115 [2022-03-01 16:25:06,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:25:06,402 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 319 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:06,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2334 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:25:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-01 16:25:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-01 16:25:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:25:06,412 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:25:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:06,412 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:25:06,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:25:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:06,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:06,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:06,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-01 16:25:06,413 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:06,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2026530828, now seen corresponding path program 133 times [2022-03-01 16:25:06,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:06,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941197649] [2022-03-01 16:25:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:06,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:06,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941197649] [2022-03-01 16:25:06,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941197649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:06,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:06,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:06,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121540713] [2022-03-01 16:25:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:06,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:06,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:06,763 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:08,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:10,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:10,976 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-03-01 16:25:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:25:10,976 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:10,978 INFO L225 Difference]: With dead ends: 1327 [2022-03-01 16:25:10,978 INFO L226 Difference]: Without dead ends: 1229 [2022-03-01 16:25:10,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:25:10,978 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 300 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:10,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2522 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-01 16:25:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-01 16:25:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1111. [2022-03-01 16:25:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-01 16:25:10,988 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-01 16:25:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:10,988 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-01 16:25:10,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-01 16:25:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:10,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:10,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:10,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-01 16:25:10,990 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash -951903576, now seen corresponding path program 134 times [2022-03-01 16:25:10,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:10,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83692742] [2022-03-01 16:25:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:11,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:11,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83692742] [2022-03-01 16:25:11,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83692742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:11,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:11,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:11,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163900667] [2022-03-01 16:25:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:11,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:11,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:11,326 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:12,881 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-01 16:25:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:25:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:12,883 INFO L225 Difference]: With dead ends: 1295 [2022-03-01 16:25:12,883 INFO L226 Difference]: Without dead ends: 1160 [2022-03-01 16:25:12,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:25:12,883 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 260 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:12,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2741 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:25:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-01 16:25:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1087. [2022-03-01 16:25:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-01 16:25:12,893 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-01 16:25:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:12,893 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-01 16:25:12,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-01 16:25:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:12,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:12,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:12,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-01 16:25:12,894 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1975058156, now seen corresponding path program 135 times [2022-03-01 16:25:12,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:12,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858285928] [2022-03-01 16:25:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:13,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:13,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858285928] [2022-03-01 16:25:13,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858285928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:13,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:13,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-01 16:25:13,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256605745] [2022-03-01 16:25:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:13,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 16:25:13,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 16:25:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-01 16:25:13,224 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:14,142 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-01 16:25:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:25:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:14,144 INFO L225 Difference]: With dead ends: 1271 [2022-03-01 16:25:14,144 INFO L226 Difference]: Without dead ends: 1051 [2022-03-01 16:25:14,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:25:14,144 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 266 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:14,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2269 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:25:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-03-01 16:25:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1023. [2022-03-01 16:25:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.4902152641878668) internal successors, (2545), 1022 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2545 transitions. [2022-03-01 16:25:14,153 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2545 transitions. Word has length 79 [2022-03-01 16:25:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:14,154 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2545 transitions. [2022-03-01 16:25:14,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2545 transitions. [2022-03-01 16:25:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:14,155 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:14,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:14,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-03-01 16:25:14,155 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1998707450, now seen corresponding path program 136 times [2022-03-01 16:25:14,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:14,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102785694] [2022-03-01 16:25:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:14,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:14,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102785694] [2022-03-01 16:25:14,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102785694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:14,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:14,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:14,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034037804] [2022-03-01 16:25:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:14,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:14,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:14,562 INFO L87 Difference]: Start difference. First operand 1023 states and 2545 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:16,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:17,200 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-03-01 16:25:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:25:17,201 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:17,202 INFO L225 Difference]: With dead ends: 1353 [2022-03-01 16:25:17,202 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:25:17,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:25:17,203 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 344 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:17,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2911 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 16:25:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:25:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-03-01 16:25:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-01 16:25:17,213 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-01 16:25:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:17,213 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-01 16:25:17,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-01 16:25:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:17,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:17,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:17,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-01 16:25:17,214 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:17,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1442868680, now seen corresponding path program 137 times [2022-03-01 16:25:17,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:17,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504425566] [2022-03-01 16:25:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:17,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:17,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504425566] [2022-03-01 16:25:17,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504425566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:17,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:17,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:17,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615004330] [2022-03-01 16:25:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:17,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:17,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:17,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:17,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:17,612 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:19,470 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-03-01 16:25:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:25:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:19,472 INFO L225 Difference]: With dead ends: 1352 [2022-03-01 16:25:19,472 INFO L226 Difference]: Without dead ends: 1254 [2022-03-01 16:25:19,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:25:19,473 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 342 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:19,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3019 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:25:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-01 16:25:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-03-01 16:25:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-01 16:25:19,482 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-01 16:25:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:19,483 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-01 16:25:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-01 16:25:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:19,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:19,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-01 16:25:19,484 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2137861338, now seen corresponding path program 138 times [2022-03-01 16:25:19,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:19,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84990169] [2022-03-01 16:25:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:19,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:19,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84990169] [2022-03-01 16:25:19,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84990169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:19,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:19,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:19,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382420997] [2022-03-01 16:25:19,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:19,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:19,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:19,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:19,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:19,836 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:21,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:22,447 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-03-01 16:25:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:25:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:22,449 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:25:22,449 INFO L226 Difference]: Without dead ends: 1222 [2022-03-01 16:25:22,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:25:22,449 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 345 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:22,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2682 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 16:25:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-01 16:25:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-03-01 16:25:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4925788497217067) internal successors, (2687), 1078 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-01 16:25:22,459 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-01 16:25:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:22,459 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-01 16:25:22,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-01 16:25:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:22,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:22,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:22,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-01 16:25:22,460 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:22,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413112, now seen corresponding path program 139 times [2022-03-01 16:25:22,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:22,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022801492] [2022-03-01 16:25:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:22,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:22,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022801492] [2022-03-01 16:25:22,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022801492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:22,793 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:22,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:22,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817756547] [2022-03-01 16:25:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:22,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:22,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:22,794 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:24,174 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-03-01 16:25:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:25:24,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:24,176 INFO L225 Difference]: With dead ends: 1341 [2022-03-01 16:25:24,176 INFO L226 Difference]: Without dead ends: 1191 [2022-03-01 16:25:24,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=2727, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:25:24,176 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 324 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:24,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2671 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:25:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-01 16:25:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-03-01 16:25:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:25:24,190 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:25:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:24,190 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:25:24,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:25:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:24,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:24,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:24,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-03-01 16:25:24,192 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash -950830778, now seen corresponding path program 140 times [2022-03-01 16:25:24,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:24,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964473867] [2022-03-01 16:25:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:24,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:24,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964473867] [2022-03-01 16:25:24,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964473867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:24,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:24,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:24,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463769455] [2022-03-01 16:25:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:24,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:24,554 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:25,904 INFO L93 Difference]: Finished difference Result 1330 states and 3300 transitions. [2022-03-01 16:25:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:25:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:25,906 INFO L225 Difference]: With dead ends: 1330 [2022-03-01 16:25:25,906 INFO L226 Difference]: Without dead ends: 1232 [2022-03-01 16:25:25,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2412, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:25:25,907 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 276 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:25,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2671 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:25:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-03-01 16:25:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1099. [2022-03-01 16:25:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:25:25,917 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:25:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:25,917 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:25:25,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:25:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:25,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:25,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-01 16:25:25,918 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 365702114, now seen corresponding path program 141 times [2022-03-01 16:25:25,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:25,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567868050] [2022-03-01 16:25:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:26,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:26,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567868050] [2022-03-01 16:25:26,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567868050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:26,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:26,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:26,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849677536] [2022-03-01 16:25:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:26,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:26,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:26,254 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:29,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:25:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:29,418 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-01 16:25:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:29,420 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:25:29,420 INFO L226 Difference]: Without dead ends: 1139 [2022-03-01 16:25:29,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:29,421 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 318 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:29,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2648 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 16:25:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-01 16:25:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1051. [2022-03-01 16:25:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4895238095238095) internal successors, (2614), 1050 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2614 transitions. [2022-03-01 16:25:29,430 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2614 transitions. Word has length 79 [2022-03-01 16:25:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:29,430 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2614 transitions. [2022-03-01 16:25:29,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2614 transitions. [2022-03-01 16:25:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:29,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:29,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:29,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-01 16:25:29,431 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1657096888, now seen corresponding path program 142 times [2022-03-01 16:25:29,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:29,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674685525] [2022-03-01 16:25:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:29,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:29,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:29,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674685525] [2022-03-01 16:25:29,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674685525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:29,781 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:29,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:29,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867894063] [2022-03-01 16:25:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:29,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:29,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:29,782 INFO L87 Difference]: Start difference. First operand 1051 states and 2614 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:30,956 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-01 16:25:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:25:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:30,957 INFO L225 Difference]: With dead ends: 1285 [2022-03-01 16:25:30,957 INFO L226 Difference]: Without dead ends: 1171 [2022-03-01 16:25:30,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2138, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:25:30,958 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 307 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:30,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2369 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-01 16:25:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1075. [2022-03-01 16:25:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:25:30,968 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:25:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:30,968 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:25:30,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:25:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:30,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:30,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:30,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-01 16:25:30,969 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2023991318, now seen corresponding path program 143 times [2022-03-01 16:25:30,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:30,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397604858] [2022-03-01 16:25:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:31,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:31,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397604858] [2022-03-01 16:25:31,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397604858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:31,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:31,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:31,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884755852] [2022-03-01 16:25:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:31,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:31,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:31,326 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:32,532 INFO L93 Difference]: Finished difference Result 1296 states and 3215 transitions. [2022-03-01 16:25:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:25:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:32,534 INFO L225 Difference]: With dead ends: 1296 [2022-03-01 16:25:32,534 INFO L226 Difference]: Without dead ends: 1198 [2022-03-01 16:25:32,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:32,535 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 316 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:32,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2451 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-01 16:25:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1079. [2022-03-01 16:25:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-01 16:25:32,545 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-01 16:25:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:32,545 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-01 16:25:32,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-01 16:25:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:32,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:32,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:32,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-01 16:25:32,547 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1309754040, now seen corresponding path program 144 times [2022-03-01 16:25:32,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:32,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570374229] [2022-03-01 16:25:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:32,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:32,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:32,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570374229] [2022-03-01 16:25:32,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570374229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:32,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:32,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:32,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924584869] [2022-03-01 16:25:32,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:32,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:32,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:32,892 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:34,110 INFO L93 Difference]: Finished difference Result 1264 states and 3131 transitions. [2022-03-01 16:25:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:34,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:34,111 INFO L225 Difference]: With dead ends: 1264 [2022-03-01 16:25:34,111 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:25:34,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:25:34,112 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 326 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:34,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2502 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:25:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1071. [2022-03-01 16:25:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4906542056074765) internal successors, (2665), 1070 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-01 16:25:34,121 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-01 16:25:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:34,121 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-01 16:25:34,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-01 16:25:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:34,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:34,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:34,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-01 16:25:34,123 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:34,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -839063226, now seen corresponding path program 145 times [2022-03-01 16:25:34,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:34,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82191532] [2022-03-01 16:25:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:34,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:34,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82191532] [2022-03-01 16:25:34,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82191532] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:34,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:34,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:34,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954945431] [2022-03-01 16:25:34,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:34,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:34,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:34,474 INFO L87 Difference]: Start difference. First operand 1071 states and 2665 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:35,919 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-03-01 16:25:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:25:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:35,921 INFO L225 Difference]: With dead ends: 1318 [2022-03-01 16:25:35,921 INFO L226 Difference]: Without dead ends: 1220 [2022-03-01 16:25:35,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:25:35,922 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 278 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:35,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2753 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:25:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-01 16:25:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1095. [2022-03-01 16:25:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.489031078610603) internal successors, (2723), 1094 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-01 16:25:35,931 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-01 16:25:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-01 16:25:35,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-01 16:25:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:35,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:35,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:35,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-03-01 16:25:35,933 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash 477469666, now seen corresponding path program 146 times [2022-03-01 16:25:35,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:35,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476180126] [2022-03-01 16:25:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:36,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:36,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476180126] [2022-03-01 16:25:36,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476180126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:36,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:36,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:36,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435695084] [2022-03-01 16:25:36,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:36,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:36,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:36,273 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:37,377 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-01 16:25:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:37,379 INFO L225 Difference]: With dead ends: 1286 [2022-03-01 16:25:37,379 INFO L226 Difference]: Without dead ends: 1143 [2022-03-01 16:25:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:37,379 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 277 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:37,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2849 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-01 16:25:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-03-01 16:25:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:25:37,389 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:25:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:37,389 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:25:37,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:25:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:37,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:37,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:37,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-01 16:25:37,390 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash -5179356, now seen corresponding path program 147 times [2022-03-01 16:25:37,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:37,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047767701] [2022-03-01 16:25:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:37,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:37,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:37,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047767701] [2022-03-01 16:25:37,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047767701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:37,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:37,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:37,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757607855] [2022-03-01 16:25:37,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:37,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:37,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:37,684 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:40,187 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-01 16:25:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:25:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:40,189 INFO L225 Difference]: With dead ends: 1361 [2022-03-01 16:25:40,189 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:25:40,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:25:40,190 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 333 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:40,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2924 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:25:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:25:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-01 16:25:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-01 16:25:40,201 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-01 16:25:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-01 16:25:40,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-01 16:25:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:40,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:40,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:40,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-01 16:25:40,202 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1311353536, now seen corresponding path program 148 times [2022-03-01 16:25:40,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:40,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829778025] [2022-03-01 16:25:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:40,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:40,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829778025] [2022-03-01 16:25:40,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829778025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:40,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:40,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:25:40,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090922472] [2022-03-01 16:25:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:40,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:25:40,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:25:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:25:40,548 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:42,007 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-01 16:25:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:25:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:42,009 INFO L225 Difference]: With dead ends: 1317 [2022-03-01 16:25:42,009 INFO L226 Difference]: Without dead ends: 1182 [2022-03-01 16:25:42,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:25:42,010 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 357 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2771 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:25:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-01 16:25:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-01 16:25:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-01 16:25:42,019 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-01 16:25:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:42,019 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-01 16:25:42,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-01 16:25:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:42,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:42,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:42,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-03-01 16:25:42,021 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 180838506, now seen corresponding path program 149 times [2022-03-01 16:25:42,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:42,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370017326] [2022-03-01 16:25:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:42,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:42,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370017326] [2022-03-01 16:25:42,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370017326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:42,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:42,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:42,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691055583] [2022-03-01 16:25:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:42,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:42,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:42,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:42,423 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:43,727 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-01 16:25:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:43,729 INFO L225 Difference]: With dead ends: 1305 [2022-03-01 16:25:43,729 INFO L226 Difference]: Without dead ends: 1131 [2022-03-01 16:25:43,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:43,730 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 324 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:43,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2551 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-01 16:25:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-01 16:25:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:25:43,740 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:25:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:43,740 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:25:43,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:25:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:43,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:43,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:43,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-01 16:25:43,742 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 622528524, now seen corresponding path program 150 times [2022-03-01 16:25:43,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:43,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589469112] [2022-03-01 16:25:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:44,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:44,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589469112] [2022-03-01 16:25:44,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589469112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:44,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:44,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:44,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385311055] [2022-03-01 16:25:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:44,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:44,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:44,305 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:45,942 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-01 16:25:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:25:45,942 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:45,943 INFO L225 Difference]: With dead ends: 1339 [2022-03-01 16:25:45,943 INFO L226 Difference]: Without dead ends: 1241 [2022-03-01 16:25:45,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:25:45,944 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 298 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2590 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:25:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-01 16:25:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-03-01 16:25:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:25:45,953 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:25:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:45,953 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:25:45,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:25:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:45,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:45,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:45,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-01 16:25:45,955 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1939061416, now seen corresponding path program 151 times [2022-03-01 16:25:45,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:45,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413267079] [2022-03-01 16:25:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:46,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:46,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413267079] [2022-03-01 16:25:46,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413267079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:46,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:46,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:46,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457344706] [2022-03-01 16:25:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:46,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:46,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:46,304 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:48,196 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-01 16:25:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:25:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:48,197 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:25:48,197 INFO L226 Difference]: Without dead ends: 1172 [2022-03-01 16:25:48,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=2325, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:25:48,198 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 297 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:48,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2701 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:25:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-01 16:25:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-03-01 16:25:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:25:48,207 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:25:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:48,207 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:25:48,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:25:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:48,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:48,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:48,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-01 16:25:48,209 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 571055852, now seen corresponding path program 152 times [2022-03-01 16:25:48,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:48,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093645235] [2022-03-01 16:25:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:48,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:48,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093645235] [2022-03-01 16:25:48,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093645235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:48,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:48,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:48,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30067417] [2022-03-01 16:25:48,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:48,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:48,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:48,550 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:49,625 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-01 16:25:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:25:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:49,626 INFO L225 Difference]: With dead ends: 1283 [2022-03-01 16:25:49,626 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:25:49,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:25:49,627 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 266 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:49,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2600 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:25:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-03-01 16:25:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.487329434697856) internal successors, (2552), 1026 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2552 transitions. [2022-03-01 16:25:49,637 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2552 transitions. Word has length 79 [2022-03-01 16:25:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:49,637 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2552 transitions. [2022-03-01 16:25:49,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2552 transitions. [2022-03-01 16:25:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:49,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:49,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:49,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-01 16:25:49,639 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1880465684, now seen corresponding path program 153 times [2022-03-01 16:25:49,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:49,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210125117] [2022-03-01 16:25:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:49,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:50,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:50,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210125117] [2022-03-01 16:25:50,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210125117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:50,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:50,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:50,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415212670] [2022-03-01 16:25:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:50,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:50,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:50,033 INFO L87 Difference]: Start difference. First operand 1027 states and 2552 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:51,173 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-01 16:25:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:25:51,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:51,175 INFO L225 Difference]: With dead ends: 1285 [2022-03-01 16:25:51,175 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:25:51,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:25:51,176 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 239 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:51,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 2418 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:25:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-01 16:25:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-01 16:25:51,186 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-01 16:25:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:51,186 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-01 16:25:51,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-01 16:25:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:51,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:51,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:51,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-01 16:25:51,187 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:51,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1561110446, now seen corresponding path program 154 times [2022-03-01 16:25:51,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:51,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411197993] [2022-03-01 16:25:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:51,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:51,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411197993] [2022-03-01 16:25:51,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411197993] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:51,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:51,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:51,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465053819] [2022-03-01 16:25:51,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:51,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:51,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:51,538 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:52,664 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-03-01 16:25:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:25:52,664 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:52,666 INFO L225 Difference]: With dead ends: 1280 [2022-03-01 16:25:52,666 INFO L226 Difference]: Without dead ends: 1182 [2022-03-01 16:25:52,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:25:52,666 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 246 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:52,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 2488 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-01 16:25:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1087. [2022-03-01 16:25:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-01 16:25:52,676 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-01 16:25:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-01 16:25:52,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-01 16:25:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:52,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:52,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:52,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-01 16:25:52,678 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2019619572, now seen corresponding path program 155 times [2022-03-01 16:25:52,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:52,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247284315] [2022-03-01 16:25:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:53,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:53,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247284315] [2022-03-01 16:25:53,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247284315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:53,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:53,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:53,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521610378] [2022-03-01 16:25:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:53,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:53,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:53,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:53,022 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:54,076 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-03-01 16:25:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:25:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:54,077 INFO L225 Difference]: With dead ends: 1248 [2022-03-01 16:25:54,077 INFO L226 Difference]: Without dead ends: 1135 [2022-03-01 16:25:54,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:25:54,078 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 260 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:54,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2535 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-03-01 16:25:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1075. [2022-03-01 16:25:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:25:54,095 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:25:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:54,095 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:25:54,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:25:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:54,096 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:54,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:54,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-01 16:25:54,097 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1460660980, now seen corresponding path program 156 times [2022-03-01 16:25:54,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:54,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615041278] [2022-03-01 16:25:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:54,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:54,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615041278] [2022-03-01 16:25:54,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615041278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:54,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:54,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:54,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231508701] [2022-03-01 16:25:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:54,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:54,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:54,420 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:55,669 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-01 16:25:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:25:55,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:55,671 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:25:55,671 INFO L226 Difference]: Without dead ends: 1200 [2022-03-01 16:25:55,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:25:55,672 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 292 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:55,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2302 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:25:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-01 16:25:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-03-01 16:25:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:25:55,687 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:25:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:55,687 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:25:55,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:25:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:55,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:55,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:55,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-01 16:25:55,688 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -144128088, now seen corresponding path program 157 times [2022-03-01 16:25:55,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:55,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684504870] [2022-03-01 16:25:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:56,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:56,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684504870] [2022-03-01 16:25:56,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684504870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:56,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:56,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:25:56,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156621544] [2022-03-01 16:25:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:56,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:25:56,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:25:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:25:56,034 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:57,155 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-01 16:25:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:25:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:57,157 INFO L225 Difference]: With dead ends: 1266 [2022-03-01 16:25:57,157 INFO L226 Difference]: Without dead ends: 1115 [2022-03-01 16:25:57,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:25:57,157 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 271 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:57,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2403 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-01 16:25:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-03-01 16:25:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-01 16:25:57,167 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-01 16:25:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:57,167 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-01 16:25:57,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-01 16:25:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:57,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:57,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:57,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-01 16:25:57,169 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:57,169 INFO L85 PathProgramCache]: Analyzing trace with hash 709963020, now seen corresponding path program 158 times [2022-03-01 16:25:57,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:57,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445195483] [2022-03-01 16:25:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:57,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:57,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:57,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445195483] [2022-03-01 16:25:57,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445195483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:57,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:57,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:57,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071656138] [2022-03-01 16:25:57,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:57,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:57,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:57,451 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:59,471 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-03-01 16:25:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:25:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:25:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:59,473 INFO L225 Difference]: With dead ends: 1333 [2022-03-01 16:25:59,473 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:25:59,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:25:59,474 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 318 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:59,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2831 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:25:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:25:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-03-01 16:25:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-01 16:25:59,485 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-01 16:25:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:59,485 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-01 16:25:59,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-01 16:25:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:25:59,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:59,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:59,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-01 16:25:59,486 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2026495912, now seen corresponding path program 159 times [2022-03-01 16:25:59,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:59,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139783537] [2022-03-01 16:25:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:59,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:59,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:59,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139783537] [2022-03-01 16:25:59,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139783537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:25:59,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:25:59,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:25:59,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445516883] [2022-03-01 16:25:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:25:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:25:59,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:25:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:25:59,861 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:01,198 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-01 16:26:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:26:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:01,200 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:26:01,200 INFO L226 Difference]: Without dead ends: 1154 [2022-03-01 16:26:01,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:26:01,200 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 301 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:01,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2540 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:26:01,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-01 16:26:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1063. [2022-03-01 16:26:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-01 16:26:01,213 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-01 16:26:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:01,213 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-01 16:26:01,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-01 16:26:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:01,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:01,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:01,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-01 16:26:01,215 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash 895980882, now seen corresponding path program 160 times [2022-03-01 16:26:01,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:01,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557052367] [2022-03-01 16:26:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:01,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:01,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557052367] [2022-03-01 16:26:01,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557052367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:01,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:01,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:26:01,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753716864] [2022-03-01 16:26:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:01,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:26:01,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:26:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:26:01,575 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:02,812 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-01 16:26:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:26:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:02,814 INFO L225 Difference]: With dead ends: 1277 [2022-03-01 16:26:02,814 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 16:26:02,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:26:02,814 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 306 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:02,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2463 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:26:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 16:26:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-01 16:26:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:26:02,824 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:26:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:02,824 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:26:02,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:26:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:02,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:02,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:02,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-03-01 16:26:02,826 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 774666158, now seen corresponding path program 161 times [2022-03-01 16:26:02,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:02,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090582770] [2022-03-01 16:26:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:03,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:03,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090582770] [2022-03-01 16:26:03,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090582770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:03,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:03,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:03,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636846886] [2022-03-01 16:26:03,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:03,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:03,253 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:05,219 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-03-01 16:26:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:26:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:05,221 INFO L225 Difference]: With dead ends: 1331 [2022-03-01 16:26:05,221 INFO L226 Difference]: Without dead ends: 1233 [2022-03-01 16:26:05,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:26:05,222 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 288 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:05,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2876 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:26:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-03-01 16:26:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1099. [2022-03-01 16:26:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:26:05,232 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:26:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:05,232 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:26:05,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:26:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:05,233 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:05,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:05,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-01 16:26:05,233 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2091199050, now seen corresponding path program 162 times [2022-03-01 16:26:05,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:05,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183050714] [2022-03-01 16:26:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:05,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:05,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183050714] [2022-03-01 16:26:05,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183050714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:05,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:05,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:05,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122278038] [2022-03-01 16:26:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:05,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:05,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:05,641 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:07,276 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-01 16:26:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:26:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:07,277 INFO L225 Difference]: With dead ends: 1299 [2022-03-01 16:26:07,277 INFO L226 Difference]: Without dead ends: 1164 [2022-03-01 16:26:07,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:26:07,278 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 287 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:07,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2698 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:26:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-01 16:26:07,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1075. [2022-03-01 16:26:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:26:07,287 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:26:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:07,287 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:26:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:26:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:07,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:07,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:07,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-01 16:26:07,289 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 723193486, now seen corresponding path program 163 times [2022-03-01 16:26:07,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:07,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626654798] [2022-03-01 16:26:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:07,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:07,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626654798] [2022-03-01 16:26:07,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626654798] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:07,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:07,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:26:07,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344392557] [2022-03-01 16:26:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:07,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:26:07,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:26:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:26:07,645 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:08,581 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-01 16:26:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:26:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:08,583 INFO L225 Difference]: With dead ends: 1275 [2022-03-01 16:26:08,583 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:26:08,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:26:08,584 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 257 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:08,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2604 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:26:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1035. [2022-03-01 16:26:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.481624758220503) internal successors, (2566), 1034 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-01 16:26:08,605 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-01 16:26:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:08,605 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-01 16:26:08,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-01 16:26:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:08,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:08,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:08,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-03-01 16:26:08,606 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 799262638, now seen corresponding path program 164 times [2022-03-01 16:26:08,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:08,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588030319] [2022-03-01 16:26:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:08,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:08,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588030319] [2022-03-01 16:26:08,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588030319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:08,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:08,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:08,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939440290] [2022-03-01 16:26:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:08,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:08,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:08,990 INFO L87 Difference]: Start difference. First operand 1035 states and 2566 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:10,747 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-01 16:26:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:26:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:10,749 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:26:10,749 INFO L226 Difference]: Without dead ends: 1249 [2022-03-01 16:26:10,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:26:10,750 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 312 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:10,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2891 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:26:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-03-01 16:26:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-03-01 16:26:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-01 16:26:10,761 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-01 16:26:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:10,761 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-01 16:26:10,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-01 16:26:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:10,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:10,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:10,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-03-01 16:26:10,762 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2115795530, now seen corresponding path program 165 times [2022-03-01 16:26:10,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:10,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656175615] [2022-03-01 16:26:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:10,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:11,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:11,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656175615] [2022-03-01 16:26:11,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656175615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:11,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:11,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:11,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72882437] [2022-03-01 16:26:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:11,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:11,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:11,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:11,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:11,134 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:12,647 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-01 16:26:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:26:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:12,649 INFO L225 Difference]: With dead ends: 1303 [2022-03-01 16:26:12,649 INFO L226 Difference]: Without dead ends: 1168 [2022-03-01 16:26:12,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:26:12,650 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 296 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:12,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2998 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:26:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-01 16:26:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-01 16:26:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-01 16:26:12,660 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-01 16:26:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:12,660 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-01 16:26:12,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-01 16:26:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:12,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:12,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:12,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-01 16:26:12,661 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash 747789966, now seen corresponding path program 166 times [2022-03-01 16:26:12,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:12,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520337845] [2022-03-01 16:26:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:13,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:13,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520337845] [2022-03-01 16:26:13,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520337845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:13,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:13,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:13,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042943668] [2022-03-01 16:26:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:13,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:13,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:13,005 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:14,159 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-01 16:26:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:26:14,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:14,161 INFO L225 Difference]: With dead ends: 1267 [2022-03-01 16:26:14,161 INFO L226 Difference]: Without dead ends: 1087 [2022-03-01 16:26:14,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:26:14,161 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 271 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:14,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2768 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:26:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-01 16:26:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-01 16:26:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-01 16:26:14,172 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-01 16:26:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:14,172 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-01 16:26:14,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-01 16:26:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:14,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:14,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-01 16:26:14,174 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1561685210, now seen corresponding path program 167 times [2022-03-01 16:26:14,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:14,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089431044] [2022-03-01 16:26:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:14,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:14,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089431044] [2022-03-01 16:26:14,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089431044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:14,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:14,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:26:14,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436907255] [2022-03-01 16:26:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:14,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:26:14,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:26:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:26:14,507 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:15,289 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-01 16:26:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:26:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:15,290 INFO L225 Difference]: With dead ends: 1282 [2022-03-01 16:26:15,290 INFO L226 Difference]: Without dead ends: 1043 [2022-03-01 16:26:15,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:26:15,291 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 288 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:15,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2653 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-01 16:26:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1015. [2022-03-01 16:26:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 2.4881656804733727) internal successors, (2523), 1014 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2523 transitions. [2022-03-01 16:26:15,301 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2523 transitions. Word has length 79 [2022-03-01 16:26:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:15,301 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2523 transitions. [2022-03-01 16:26:15,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2523 transitions. [2022-03-01 16:26:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:15,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:15,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:15,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-01 16:26:15,303 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash 441084520, now seen corresponding path program 168 times [2022-03-01 16:26:15,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:15,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350825325] [2022-03-01 16:26:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:15,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:15,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:15,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350825325] [2022-03-01 16:26:15,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350825325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:15,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:15,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:15,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626174841] [2022-03-01 16:26:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:15,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:15,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:15,702 INFO L87 Difference]: Start difference. First operand 1015 states and 2523 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:18,063 INFO L93 Difference]: Finished difference Result 1337 states and 3338 transitions. [2022-03-01 16:26:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:26:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:18,065 INFO L225 Difference]: With dead ends: 1337 [2022-03-01 16:26:18,065 INFO L226 Difference]: Without dead ends: 1207 [2022-03-01 16:26:18,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:26:18,066 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 348 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:18,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2827 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 16:26:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-01 16:26:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-03-01 16:26:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5009107468123863) internal successors, (2746), 1098 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-01 16:26:18,077 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-01 16:26:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:18,077 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-01 16:26:18,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-01 16:26:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:18,078 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:18,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:18,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-01 16:26:18,078 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -412306646, now seen corresponding path program 169 times [2022-03-01 16:26:18,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:18,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323491627] [2022-03-01 16:26:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:18,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:18,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323491627] [2022-03-01 16:26:18,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323491627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:18,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:18,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:18,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033797871] [2022-03-01 16:26:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:18,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:18,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:18,456 INFO L87 Difference]: Start difference. First operand 1099 states and 2746 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:20,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:21,894 INFO L93 Difference]: Finished difference Result 1336 states and 3329 transitions. [2022-03-01 16:26:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:26:21,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:21,896 INFO L225 Difference]: With dead ends: 1336 [2022-03-01 16:26:21,896 INFO L226 Difference]: Without dead ends: 1238 [2022-03-01 16:26:21,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:26:21,897 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 308 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:21,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 3070 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:26:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-03-01 16:26:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1103. [2022-03-01 16:26:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4981851179673322) internal successors, (2753), 1102 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2753 transitions. [2022-03-01 16:26:21,926 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2753 transitions. Word has length 79 [2022-03-01 16:26:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:21,926 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2753 transitions. [2022-03-01 16:26:21,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2753 transitions. [2022-03-01 16:26:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:21,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:21,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:21,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-01 16:26:21,927 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash 301930632, now seen corresponding path program 170 times [2022-03-01 16:26:21,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:21,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555890549] [2022-03-01 16:26:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:22,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:22,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555890549] [2022-03-01 16:26:22,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555890549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:22,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:22,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:22,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413099843] [2022-03-01 16:26:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:22,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:22,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:22,312 INFO L87 Difference]: Start difference. First operand 1103 states and 2753 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:23,951 INFO L93 Difference]: Finished difference Result 1319 states and 3280 transitions. [2022-03-01 16:26:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:26:23,951 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:23,953 INFO L225 Difference]: With dead ends: 1319 [2022-03-01 16:26:23,953 INFO L226 Difference]: Without dead ends: 1206 [2022-03-01 16:26:23,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:26:23,954 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 336 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:23,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2854 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:26:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-01 16:26:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1091. [2022-03-01 16:26:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-01 16:26:23,965 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-01 16:26:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:23,965 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-01 16:26:23,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-01 16:26:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:23,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:23,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-01 16:26:23,966 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 627378858, now seen corresponding path program 171 times [2022-03-01 16:26:23,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:23,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896014988] [2022-03-01 16:26:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:24,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:24,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896014988] [2022-03-01 16:26:24,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896014988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:24,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:24,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:24,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737139130] [2022-03-01 16:26:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:24,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:24,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:24,323 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:25,797 INFO L93 Difference]: Finished difference Result 1313 states and 3260 transitions. [2022-03-01 16:26:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:26:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:25,799 INFO L225 Difference]: With dead ends: 1313 [2022-03-01 16:26:25,799 INFO L226 Difference]: Without dead ends: 1163 [2022-03-01 16:26:25,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=2428, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:26:25,800 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 302 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:25,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2839 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:26:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-03-01 16:26:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1087. [2022-03-01 16:26:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-01 16:26:25,810 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-01 16:26:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:25,810 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-01 16:26:25,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-01 16:26:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:25,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:25,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:25,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-01 16:26:25,811 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1488961192, now seen corresponding path program 172 times [2022-03-01 16:26:25,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:25,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866189360] [2022-03-01 16:26:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:26,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:26,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866189360] [2022-03-01 16:26:26,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866189360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:26,143 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:26,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:26,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503442285] [2022-03-01 16:26:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:26,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:26,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:26,144 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:27,379 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-03-01 16:26:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:26:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:27,381 INFO L225 Difference]: With dead ends: 1318 [2022-03-01 16:26:27,381 INFO L226 Difference]: Without dead ends: 1220 [2022-03-01 16:26:27,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:26:27,382 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 268 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:27,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2844 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:26:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-01 16:26:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1111. [2022-03-01 16:26:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-01 16:26:27,415 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-01 16:26:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:27,415 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-01 16:26:27,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-01 16:26:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:27,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:27,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:27,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-03-01 16:26:27,417 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473212, now seen corresponding path program 173 times [2022-03-01 16:26:27,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:27,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007897994] [2022-03-01 16:26:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:27,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:27,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007897994] [2022-03-01 16:26:27,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007897994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:27,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:27,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:27,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268858649] [2022-03-01 16:26:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:27,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:27,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:27,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:27,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:27,763 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:29,357 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-01 16:26:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:26:29,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:29,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:29,359 INFO L225 Difference]: With dead ends: 1286 [2022-03-01 16:26:29,359 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 16:26:29,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:26:29,359 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 267 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:29,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2937 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:26:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 16:26:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-01 16:26:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.492467043314501) internal successors, (2647), 1062 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-03-01 16:26:29,369 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-03-01 16:26:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:29,369 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-03-01 16:26:29,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-03-01 16:26:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:29,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:29,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:29,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-01 16:26:29,370 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash 782695082, now seen corresponding path program 174 times [2022-03-01 16:26:29,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:29,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296262626] [2022-03-01 16:26:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:29,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:29,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296262626] [2022-03-01 16:26:29,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296262626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:29,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:29,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:29,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350889186] [2022-03-01 16:26:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:29,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:29,760 INFO L87 Difference]: Start difference. First operand 1063 states and 2647 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:31,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:31,039 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-01 16:26:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:26:31,040 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:31,041 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 16:26:31,041 INFO L226 Difference]: Without dead ends: 1167 [2022-03-01 16:26:31,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:26:31,042 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 255 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:31,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2757 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:26:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-01 16:26:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1087. [2022-03-01 16:26:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-01 16:26:31,055 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-01 16:26:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:31,055 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-01 16:26:31,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-01 16:26:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:31,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:31,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:31,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-03-01 16:26:31,056 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:31,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:31,057 INFO L85 PathProgramCache]: Analyzing trace with hash 415800652, now seen corresponding path program 175 times [2022-03-01 16:26:31,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:31,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799920955] [2022-03-01 16:26:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:31,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:31,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799920955] [2022-03-01 16:26:31,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799920955] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:31,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:31,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:31,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76135697] [2022-03-01 16:26:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:31,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:31,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:31,391 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:32,772 INFO L93 Difference]: Finished difference Result 1292 states and 3204 transitions. [2022-03-01 16:26:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:26:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:32,774 INFO L225 Difference]: With dead ends: 1292 [2022-03-01 16:26:32,774 INFO L226 Difference]: Without dead ends: 1194 [2022-03-01 16:26:32,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:26:32,775 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 283 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:32,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2602 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:26:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-01 16:26:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-03-01 16:26:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.491743119266055) internal successors, (2716), 1090 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-03-01 16:26:32,803 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-03-01 16:26:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:32,803 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-03-01 16:26:32,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-03-01 16:26:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:32,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:32,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:32,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-03-01 16:26:32,805 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1130037930, now seen corresponding path program 176 times [2022-03-01 16:26:32,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:32,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538540135] [2022-03-01 16:26:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:33,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:33,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538540135] [2022-03-01 16:26:33,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538540135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:33,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:33,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:33,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872964008] [2022-03-01 16:26:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:33,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:33,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:33,150 INFO L87 Difference]: Start difference. First operand 1091 states and 2716 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:35,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:36,280 INFO L93 Difference]: Finished difference Result 1260 states and 3120 transitions. [2022-03-01 16:26:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:26:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:36,281 INFO L225 Difference]: With dead ends: 1260 [2022-03-01 16:26:36,281 INFO L226 Difference]: Without dead ends: 1151 [2022-03-01 16:26:36,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:26:36,282 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 311 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:36,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2528 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:26:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-01 16:26:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1083. [2022-03-01 16:26:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-01 16:26:36,291 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-01 16:26:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:36,291 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-01 16:26:36,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-01 16:26:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:36,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:36,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:36,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-01 16:26:36,293 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1600728744, now seen corresponding path program 177 times [2022-03-01 16:26:36,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:36,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396371517] [2022-03-01 16:26:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:36,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:36,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396371517] [2022-03-01 16:26:36,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396371517] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:36,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:36,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:36,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072631663] [2022-03-01 16:26:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:36,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:36,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:36,627 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:38,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:41,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:41,235 INFO L93 Difference]: Finished difference Result 1393 states and 3425 transitions. [2022-03-01 16:26:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:26:41,236 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:41,237 INFO L225 Difference]: With dead ends: 1393 [2022-03-01 16:26:41,237 INFO L226 Difference]: Without dead ends: 1295 [2022-03-01 16:26:41,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:26:41,238 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 313 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:41,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2677 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-01 16:26:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-03-01 16:26:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1095. [2022-03-01 16:26:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4926873857404024) internal successors, (2727), 1094 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2727 transitions. [2022-03-01 16:26:41,254 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2727 transitions. Word has length 79 [2022-03-01 16:26:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:41,254 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2727 transitions. [2022-03-01 16:26:41,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2727 transitions. [2022-03-01 16:26:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:41,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:41,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:41,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-01 16:26:41,255 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1980001274, now seen corresponding path program 178 times [2022-03-01 16:26:41,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:41,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777658745] [2022-03-01 16:26:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:41,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:41,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777658745] [2022-03-01 16:26:41,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777658745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:41,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:41,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:41,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006938755] [2022-03-01 16:26:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:41,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:41,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:41,625 INFO L87 Difference]: Start difference. First operand 1095 states and 2727 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:43,316 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-01 16:26:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:26:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:43,317 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:26:43,318 INFO L226 Difference]: Without dead ends: 1139 [2022-03-01 16:26:43,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:26:43,318 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 324 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:43,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2648 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:26:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-01 16:26:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1075. [2022-03-01 16:26:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:26:43,328 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:26:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:43,328 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:26:43,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:26:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:43,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:43,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:43,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-01 16:26:43,329 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1860354682, now seen corresponding path program 179 times [2022-03-01 16:26:43,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:43,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594760172] [2022-03-01 16:26:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:43,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:43,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594760172] [2022-03-01 16:26:43,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594760172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:43,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:43,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:43,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043360791] [2022-03-01 16:26:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:43,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:43,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:43,701 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:45,276 INFO L93 Difference]: Finished difference Result 1357 states and 3364 transitions. [2022-03-01 16:26:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:26:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:45,278 INFO L225 Difference]: With dead ends: 1357 [2022-03-01 16:26:45,278 INFO L226 Difference]: Without dead ends: 1259 [2022-03-01 16:26:45,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:26:45,279 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 301 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:45,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3220 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:26:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-01 16:26:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1103. [2022-03-01 16:26:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-01 16:26:45,290 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-01 16:26:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:45,290 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-01 16:26:45,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-01 16:26:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:45,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:45,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:45,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-01 16:26:45,291 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -543821790, now seen corresponding path program 180 times [2022-03-01 16:26:45,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:45,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355494222] [2022-03-01 16:26:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:45,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:45,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:45,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355494222] [2022-03-01 16:26:45,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355494222] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:45,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:45,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:26:45,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711581992] [2022-03-01 16:26:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:45,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:26:45,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:26:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:26:45,667 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:48,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:49,176 INFO L93 Difference]: Finished difference Result 1313 states and 3247 transitions. [2022-03-01 16:26:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:26:49,176 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:49,177 INFO L225 Difference]: With dead ends: 1313 [2022-03-01 16:26:49,177 INFO L226 Difference]: Without dead ends: 1178 [2022-03-01 16:26:49,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:26:49,178 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 345 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:49,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2795 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1084 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:26:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-03-01 16:26:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1079. [2022-03-01 16:26:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-01 16:26:49,190 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-01 16:26:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:49,190 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-01 16:26:49,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-01 16:26:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:49,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:49,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:49,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-01 16:26:49,192 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1674336820, now seen corresponding path program 181 times [2022-03-01 16:26:49,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:49,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128358065] [2022-03-01 16:26:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:49,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:49,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:49,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128358065] [2022-03-01 16:26:49,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128358065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:49,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:49,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:49,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565887089] [2022-03-01 16:26:49,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:49,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:49,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:49,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:49,538 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:52,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:52,878 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-03-01 16:26:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:26:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:52,879 INFO L225 Difference]: With dead ends: 1301 [2022-03-01 16:26:52,879 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 16:26:52,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:26:52,880 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 328 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:52,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2576 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 973 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:26:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 16:26:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-01 16:26:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:26:52,890 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:26:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:52,890 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:26:52,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:26:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:52,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:52,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:52,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-01 16:26:52,891 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1232646802, now seen corresponding path program 182 times [2022-03-01 16:26:52,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:52,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135578301] [2022-03-01 16:26:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:52,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:53,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:53,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135578301] [2022-03-01 16:26:53,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135578301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:53,269 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:53,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:53,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602066245] [2022-03-01 16:26:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:53,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:53,270 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:56,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:56,557 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-01 16:26:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:26:56,557 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:56,559 INFO L225 Difference]: With dead ends: 1339 [2022-03-01 16:26:56,559 INFO L226 Difference]: Without dead ends: 1241 [2022-03-01 16:26:56,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:26:56,559 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 275 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:56,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2758 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:26:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-01 16:26:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1111. [2022-03-01 16:26:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-01 16:26:56,569 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-01 16:26:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:56,569 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-01 16:26:56,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-01 16:26:56,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:56,570 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:56,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:56,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-01 16:26:56,570 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 83886090, now seen corresponding path program 183 times [2022-03-01 16:26:56,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:56,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732085220] [2022-03-01 16:26:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:56,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:56,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:56,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732085220] [2022-03-01 16:26:56,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732085220] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:26:56,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:26:56,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:26:56,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456716104] [2022-03-01 16:26:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:26:56,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:26:56,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:26:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:26:56,919 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:26:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:59,844 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-01 16:26:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:26:59,844 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:26:59,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:59,846 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:26:59,846 INFO L226 Difference]: Without dead ends: 1172 [2022-03-01 16:26:59,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:26:59,846 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 274 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:59,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2867 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-01 16:26:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-01 16:26:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1087. [2022-03-01 16:26:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-01 16:26:59,856 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-01 16:26:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:59,856 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-01 16:26:59,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-01 16:26:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:26:59,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:59,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:59,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-01 16:26:59,858 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1284119474, now seen corresponding path program 184 times [2022-03-01 16:26:59,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:59,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637637514] [2022-03-01 16:26:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:00,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:00,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637637514] [2022-03-01 16:27:00,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637637514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:00,205 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:00,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:00,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204238101] [2022-03-01 16:27:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:00,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:00,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:00,206 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:01,260 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-01 16:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:27:01,260 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:01,262 INFO L225 Difference]: With dead ends: 1283 [2022-03-01 16:27:01,262 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:27:01,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:27:01,262 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 277 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:01,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2510 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:27:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-03-01 16:27:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4865125240847785) internal successors, (2581), 1038 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2581 transitions. [2022-03-01 16:27:01,276 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2581 transitions. Word has length 79 [2022-03-01 16:27:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:01,276 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2581 transitions. [2022-03-01 16:27:01,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2581 transitions. [2022-03-01 16:27:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:01,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:01,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:01,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-03-01 16:27:01,277 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -399222648, now seen corresponding path program 185 times [2022-03-01 16:27:01,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:01,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545806382] [2022-03-01 16:27:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:01,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:01,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545806382] [2022-03-01 16:27:01,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545806382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:01,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:01,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:01,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17674655] [2022-03-01 16:27:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:01,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:01,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:01,554 INFO L87 Difference]: Start difference. First operand 1039 states and 2581 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:02,525 INFO L93 Difference]: Finished difference Result 1257 states and 3114 transitions. [2022-03-01 16:27:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:27:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:02,527 INFO L225 Difference]: With dead ends: 1257 [2022-03-01 16:27:02,527 INFO L226 Difference]: Without dead ends: 1143 [2022-03-01 16:27:02,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:27:02,528 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 248 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:02,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2127 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-01 16:27:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1075. [2022-03-01 16:27:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:27:02,538 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:27:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:02,538 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:27:02,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:27:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:02,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:02,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:02,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-03-01 16:27:02,539 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:02,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -766117078, now seen corresponding path program 186 times [2022-03-01 16:27:02,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:02,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684337066] [2022-03-01 16:27:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:02,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:02,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:02,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684337066] [2022-03-01 16:27:02,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684337066] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:02,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:02,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:02,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20216408] [2022-03-01 16:27:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:02,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:02,831 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:03,750 INFO L93 Difference]: Finished difference Result 1268 states and 3138 transitions. [2022-03-01 16:27:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:27:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:03,752 INFO L225 Difference]: With dead ends: 1268 [2022-03-01 16:27:03,752 INFO L226 Difference]: Without dead ends: 1170 [2022-03-01 16:27:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:27:03,752 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 274 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:03,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2331 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-01 16:27:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1079. [2022-03-01 16:27:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-01 16:27:03,762 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-01 16:27:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:03,762 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-01 16:27:03,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-01 16:27:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:03,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:03,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:03,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-03-01 16:27:03,764 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -51879800, now seen corresponding path program 187 times [2022-03-01 16:27:03,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:03,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844613540] [2022-03-01 16:27:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:04,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:04,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844613540] [2022-03-01 16:27:04,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844613540] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:04,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:04,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:04,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870483847] [2022-03-01 16:27:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:04,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:04,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:04,056 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:04,971 INFO L93 Difference]: Finished difference Result 1236 states and 3054 transitions. [2022-03-01 16:27:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:04,973 INFO L225 Difference]: With dead ends: 1236 [2022-03-01 16:27:04,973 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 16:27:04,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:27:04,973 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 284 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:04,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2263 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 16:27:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1071. [2022-03-01 16:27:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4906542056074765) internal successors, (2665), 1070 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-01 16:27:04,982 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-01 16:27:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:04,982 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-01 16:27:04,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-01 16:27:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:04,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:04,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:04,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-01 16:27:04,984 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash 418811014, now seen corresponding path program 188 times [2022-03-01 16:27:04,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:04,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319158438] [2022-03-01 16:27:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:05,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:05,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319158438] [2022-03-01 16:27:05,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319158438] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:05,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:05,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:05,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400907055] [2022-03-01 16:27:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:05,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:05,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:05,340 INFO L87 Difference]: Start difference. First operand 1071 states and 2665 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:06,389 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-03-01 16:27:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:27:06,389 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:06,391 INFO L225 Difference]: With dead ends: 1290 [2022-03-01 16:27:06,391 INFO L226 Difference]: Without dead ends: 1192 [2022-03-01 16:27:06,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:27:06,391 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 262 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:06,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2393 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-01 16:27:06,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1095. [2022-03-01 16:27:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.489031078610603) internal successors, (2723), 1094 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-01 16:27:06,400 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-01 16:27:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:06,401 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-01 16:27:06,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-01 16:27:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:06,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:06,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:06,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-01 16:27:06,402 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1735343906, now seen corresponding path program 189 times [2022-03-01 16:27:06,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:06,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184821714] [2022-03-01 16:27:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:06,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:06,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184821714] [2022-03-01 16:27:06,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184821714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:06,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:06,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:06,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074008693] [2022-03-01 16:27:06,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:06,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:06,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:06,750 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:07,646 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-03-01 16:27:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:07,646 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:07,647 INFO L225 Difference]: With dead ends: 1258 [2022-03-01 16:27:07,647 INFO L226 Difference]: Without dead ends: 1115 [2022-03-01 16:27:07,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:27:07,648 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 260 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:07,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2496 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-01 16:27:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-01 16:27:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:27:07,657 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:27:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:07,657 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:27:07,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:27:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:07,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:07,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:07,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-01 16:27:07,658 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:07,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1252694884, now seen corresponding path program 190 times [2022-03-01 16:27:07,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:07,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448830003] [2022-03-01 16:27:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:07,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:07,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448830003] [2022-03-01 16:27:07,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448830003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:07,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:07,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:07,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264567176] [2022-03-01 16:27:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:07,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:07,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:07,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:07,923 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:09,079 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-03-01 16:27:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:27:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:09,081 INFO L225 Difference]: With dead ends: 1333 [2022-03-01 16:27:09,081 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:27:09,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:27:09,081 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 294 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2806 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:27:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1091. [2022-03-01 16:27:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-01 16:27:09,091 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-01 16:27:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:09,091 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-01 16:27:09,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-01 16:27:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:09,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:09,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:09,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-01 16:27:09,093 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1725739520, now seen corresponding path program 191 times [2022-03-01 16:27:09,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:09,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556498395] [2022-03-01 16:27:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:09,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:09,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:09,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556498395] [2022-03-01 16:27:09,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556498395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:09,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:09,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:09,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601913038] [2022-03-01 16:27:09,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:09,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:09,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:09,427 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:10,661 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-01 16:27:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:27:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:10,663 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:27:10,663 INFO L226 Difference]: Without dead ends: 1154 [2022-03-01 16:27:10,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:27:10,663 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 315 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:10,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2511 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-01 16:27:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1067. [2022-03-01 16:27:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-01 16:27:10,673 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-01 16:27:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:10,673 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-01 16:27:10,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-01 16:27:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:10,674 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:10,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:10,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-01 16:27:10,674 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1438712746, now seen corresponding path program 192 times [2022-03-01 16:27:10,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:10,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088492570] [2022-03-01 16:27:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:10,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:11,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:11,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088492570] [2022-03-01 16:27:11,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088492570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:11,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:11,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:11,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588786894] [2022-03-01 16:27:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:11,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:11,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:11,020 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:11,873 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-01 16:27:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:11,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:11,875 INFO L225 Difference]: With dead ends: 1277 [2022-03-01 16:27:11,875 INFO L226 Difference]: Without dead ends: 1111 [2022-03-01 16:27:11,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:27:11,875 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 272 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:11,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2566 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-03-01 16:27:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1059. [2022-03-01 16:27:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-01 16:27:11,886 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-01 16:27:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:11,886 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-01 16:27:11,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-01 16:27:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:11,887 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:11,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:11,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-01 16:27:11,887 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:11,888 INFO L85 PathProgramCache]: Analyzing trace with hash -393906834, now seen corresponding path program 193 times [2022-03-01 16:27:11,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:11,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302693757] [2022-03-01 16:27:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:11,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:12,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:12,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302693757] [2022-03-01 16:27:12,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302693757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:12,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:12,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:12,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689095209] [2022-03-01 16:27:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:12,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:12,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:12,186 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:13,749 INFO L93 Difference]: Finished difference Result 1335 states and 3295 transitions. [2022-03-01 16:27:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:27:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:13,751 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:27:13,751 INFO L226 Difference]: Without dead ends: 1237 [2022-03-01 16:27:13,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:27:13,751 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 270 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:13,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2701 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:27:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-01 16:27:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1107. [2022-03-01 16:27:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.491862567811935) internal successors, (2756), 1106 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-01 16:27:13,761 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-01 16:27:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:13,761 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-01 16:27:13,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-01 16:27:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:13,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:13,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:13,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-01 16:27:13,762 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 922626058, now seen corresponding path program 194 times [2022-03-01 16:27:13,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:13,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770696253] [2022-03-01 16:27:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:13,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:14,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:14,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770696253] [2022-03-01 16:27:14,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770696253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:14,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:14,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:14,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130338617] [2022-03-01 16:27:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:14,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:14,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:14,041 INFO L87 Difference]: Start difference. First operand 1107 states and 2756 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:15,344 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-01 16:27:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:27:15,344 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:15,346 INFO L225 Difference]: With dead ends: 1303 [2022-03-01 16:27:15,346 INFO L226 Difference]: Without dead ends: 1168 [2022-03-01 16:27:15,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:27:15,346 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 269 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:15,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2668 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:27:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-01 16:27:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1083. [2022-03-01 16:27:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4861367837338264) internal successors, (2690), 1082 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-03-01 16:27:15,364 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-03-01 16:27:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:15,364 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-03-01 16:27:15,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-03-01 16:27:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:15,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:15,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:15,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-01 16:27:15,366 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash -445379506, now seen corresponding path program 195 times [2022-03-01 16:27:15,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:15,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262169343] [2022-03-01 16:27:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:15,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:15,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262169343] [2022-03-01 16:27:15,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262169343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:15,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:15,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:15,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946568188] [2022-03-01 16:27:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:15,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:15,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:15,677 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:16,845 INFO L93 Difference]: Finished difference Result 1279 states and 3141 transitions. [2022-03-01 16:27:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:16,845 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:16,847 INFO L225 Difference]: With dead ends: 1279 [2022-03-01 16:27:16,847 INFO L226 Difference]: Without dead ends: 1091 [2022-03-01 16:27:16,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:27:16,848 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 257 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:16,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2597 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-01 16:27:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-01 16:27:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:27:16,859 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:27:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:16,859 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:27:16,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:27:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:16,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:16,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:16,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-01 16:27:16,861 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1055912688, now seen corresponding path program 196 times [2022-03-01 16:27:16,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:16,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653852621] [2022-03-01 16:27:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:17,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:17,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653852621] [2022-03-01 16:27:17,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653852621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:17,251 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:17,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:17,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673968595] [2022-03-01 16:27:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:17,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:17,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:17,252 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:19,214 INFO L93 Difference]: Finished difference Result 1375 states and 3401 transitions. [2022-03-01 16:27:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:27:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:19,217 INFO L225 Difference]: With dead ends: 1375 [2022-03-01 16:27:19,217 INFO L226 Difference]: Without dead ends: 1277 [2022-03-01 16:27:19,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:27:19,217 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 323 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2894 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:27:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-03-01 16:27:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1103. [2022-03-01 16:27:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-01 16:27:19,228 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-01 16:27:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:19,229 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-01 16:27:19,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-01 16:27:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:19,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:19,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:19,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-01 16:27:19,230 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 260620204, now seen corresponding path program 197 times [2022-03-01 16:27:19,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:19,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362305125] [2022-03-01 16:27:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:19,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:19,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362305125] [2022-03-01 16:27:19,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362305125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:19,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:19,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:19,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608245933] [2022-03-01 16:27:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:19,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:19,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:19,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:19,564 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:22,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:27:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:23,172 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-03-01 16:27:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:27:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:23,174 INFO L225 Difference]: With dead ends: 1331 [2022-03-01 16:27:23,174 INFO L226 Difference]: Without dead ends: 1196 [2022-03-01 16:27:23,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=2939, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:27:23,175 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 340 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:23,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2878 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:27:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-03-01 16:27:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1079. [2022-03-01 16:27:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.485157699443414) internal successors, (2679), 1078 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-03-01 16:27:23,184 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-03-01 16:27:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:23,184 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-03-01 16:27:23,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-03-01 16:27:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:23,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:23,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:23,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-01 16:27:23,186 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1107385360, now seen corresponding path program 198 times [2022-03-01 16:27:23,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:23,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348363844] [2022-03-01 16:27:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:23,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:23,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348363844] [2022-03-01 16:27:23,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348363844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:23,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:23,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:23,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61404687] [2022-03-01 16:27:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:23,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:23,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:23,534 INFO L87 Difference]: Start difference. First operand 1079 states and 2679 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:24,731 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-01 16:27:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:27:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:24,733 INFO L225 Difference]: With dead ends: 1295 [2022-03-01 16:27:24,733 INFO L226 Difference]: Without dead ends: 1115 [2022-03-01 16:27:24,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2244, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:27:24,734 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 284 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:24,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2937 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-01 16:27:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1055. [2022-03-01 16:27:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 2.48292220113852) internal successors, (2617), 1054 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-03-01 16:27:24,743 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-03-01 16:27:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:24,743 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-03-01 16:27:24,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-03-01 16:27:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:24,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:24,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:24,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-01 16:27:24,744 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 878106760, now seen corresponding path program 199 times [2022-03-01 16:27:24,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:24,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236865389] [2022-03-01 16:27:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:25,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:25,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236865389] [2022-03-01 16:27:25,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236865389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:25,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:25,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:25,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219621046] [2022-03-01 16:27:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:25,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:25,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:25,109 INFO L87 Difference]: Start difference. First operand 1055 states and 2617 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:25,985 INFO L93 Difference]: Finished difference Result 1310 states and 3220 transitions. [2022-03-01 16:27:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:25,987 INFO L225 Difference]: With dead ends: 1310 [2022-03-01 16:27:25,987 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:27:25,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:27:25,987 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 298 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:25,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2426 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:27:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-03-01 16:27:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4826589595375723) internal successors, (2577), 1038 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-01 16:27:25,997 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-01 16:27:25,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:25,997 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-01 16:27:25,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-01 16:27:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:25,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:25,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:25,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-01 16:27:25,999 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash -817748414, now seen corresponding path program 200 times [2022-03-01 16:27:25,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:25,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427046768] [2022-03-01 16:27:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:26,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:26,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427046768] [2022-03-01 16:27:26,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427046768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:26,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:26,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:26,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390160198] [2022-03-01 16:27:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:26,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:26,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:26,359 INFO L87 Difference]: Start difference. First operand 1039 states and 2577 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:29,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:27:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:30,215 INFO L93 Difference]: Finished difference Result 1355 states and 3346 transitions. [2022-03-01 16:27:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:27:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:30,217 INFO L225 Difference]: With dead ends: 1355 [2022-03-01 16:27:30,217 INFO L226 Difference]: Without dead ends: 1257 [2022-03-01 16:27:30,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:27:30,218 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 310 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2802 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-01 16:27:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-01 16:27:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1099. [2022-03-01 16:27:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:27:30,228 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:27:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:30,228 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:27:30,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:27:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:30,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:30,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:30,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-03-01 16:27:30,230 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash 498784478, now seen corresponding path program 201 times [2022-03-01 16:27:30,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:30,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536527895] [2022-03-01 16:27:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:30,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:30,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:30,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536527895] [2022-03-01 16:27:30,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536527895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:30,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:30,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:27:30,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229014563] [2022-03-01 16:27:30,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:30,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:27:30,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:27:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:27:30,563 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:32,240 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-03-01 16:27:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:27:32,241 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:32,242 INFO L225 Difference]: With dead ends: 1311 [2022-03-01 16:27:32,242 INFO L226 Difference]: Without dead ends: 1176 [2022-03-01 16:27:32,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:27:32,243 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 314 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:32,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2653 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:27:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-03-01 16:27:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-03-01 16:27:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:27:32,253 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:27:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:32,253 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:27:32,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:27:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:32,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:32,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-03-01 16:27:32,255 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:32,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash -869221086, now seen corresponding path program 202 times [2022-03-01 16:27:32,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:32,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340187453] [2022-03-01 16:27:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:32,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:32,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340187453] [2022-03-01 16:27:32,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340187453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:32,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:32,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:27:32,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785865682] [2022-03-01 16:27:32,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:32,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:27:32,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:27:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:27:32,642 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:33,612 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-01 16:27:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:27:33,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:33,614 INFO L225 Difference]: With dead ends: 1275 [2022-03-01 16:27:33,614 INFO L226 Difference]: Without dead ends: 1095 [2022-03-01 16:27:33,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:27:33,614 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 287 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:33,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2437 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:33,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-03-01 16:27:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1051. [2022-03-01 16:27:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.481904761904762) internal successors, (2606), 1050 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2606 transitions. [2022-03-01 16:27:33,624 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2606 transitions. Word has length 79 [2022-03-01 16:27:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:33,624 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2606 transitions. [2022-03-01 16:27:33,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2606 transitions. [2022-03-01 16:27:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:33,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:33,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:33,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-01 16:27:33,625 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1116271034, now seen corresponding path program 203 times [2022-03-01 16:27:33,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:33,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910849340] [2022-03-01 16:27:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:33,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:33,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910849340] [2022-03-01 16:27:33,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910849340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:33,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:33,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-01 16:27:33,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782997617] [2022-03-01 16:27:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:33,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 16:27:33,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 16:27:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-01 16:27:33,884 INFO L87 Difference]: Start difference. First operand 1051 states and 2606 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:34,628 INFO L93 Difference]: Finished difference Result 1298 states and 3187 transitions. [2022-03-01 16:27:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:27:34,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:34,630 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:27:34,630 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:27:34,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:27:34,630 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 272 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:34,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2577 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:27:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1047. [2022-03-01 16:27:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.480879541108987) internal successors, (2595), 1046 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2595 transitions. [2022-03-01 16:27:34,640 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2595 transitions. Word has length 79 [2022-03-01 16:27:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:34,640 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2595 transitions. [2022-03-01 16:27:34,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2595 transitions. [2022-03-01 16:27:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:34,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:34,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:34,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-01 16:27:34,641 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1223629364, now seen corresponding path program 204 times [2022-03-01 16:27:34,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:34,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892188440] [2022-03-01 16:27:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:34,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:34,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:34,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892188440] [2022-03-01 16:27:34,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892188440] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:34,894 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:34,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-01 16:27:34,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831950062] [2022-03-01 16:27:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:34,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 16:27:34,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 16:27:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-01 16:27:34,894 INFO L87 Difference]: Start difference. First operand 1047 states and 2595 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:35,712 INFO L93 Difference]: Finished difference Result 1316 states and 3224 transitions. [2022-03-01 16:27:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:27:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:35,713 INFO L225 Difference]: With dead ends: 1316 [2022-03-01 16:27:35,713 INFO L226 Difference]: Without dead ends: 1015 [2022-03-01 16:27:35,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 16:27:35,714 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 275 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:35,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2347 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-01 16:27:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 999. [2022-03-01 16:27:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.4839679358717435) internal successors, (2479), 998 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2479 transitions. [2022-03-01 16:27:35,722 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2479 transitions. Word has length 79 [2022-03-01 16:27:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:35,722 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 2479 transitions. [2022-03-01 16:27:35,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2479 transitions. [2022-03-01 16:27:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:35,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:35,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-01 16:27:35,724 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -183029144, now seen corresponding path program 205 times [2022-03-01 16:27:35,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:35,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207340029] [2022-03-01 16:27:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:36,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:36,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207340029] [2022-03-01 16:27:36,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207340029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:36,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:36,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:27:36,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086166016] [2022-03-01 16:27:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:36,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:27:36,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:27:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:27:36,104 INFO L87 Difference]: Start difference. First operand 999 states and 2479 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:37,923 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-03-01 16:27:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:27:37,923 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:37,925 INFO L225 Difference]: With dead ends: 1353 [2022-03-01 16:27:37,925 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:27:37,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:27:37,926 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 341 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:37,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3224 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:27:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:27:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-03-01 16:27:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-01 16:27:37,936 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-01 16:27:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:37,936 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-01 16:27:37,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-01 16:27:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:37,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:37,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:37,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-01 16:27:37,937 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1036420310, now seen corresponding path program 206 times [2022-03-01 16:27:37,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:37,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100331392] [2022-03-01 16:27:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:37,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:38,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:38,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100331392] [2022-03-01 16:27:38,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100331392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:38,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:38,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:27:38,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985000501] [2022-03-01 16:27:38,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:38,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:27:38,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:27:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:27:38,267 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:40,724 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-03-01 16:27:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:27:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:40,726 INFO L225 Difference]: With dead ends: 1352 [2022-03-01 16:27:40,726 INFO L226 Difference]: Without dead ends: 1254 [2022-03-01 16:27:40,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:27:40,727 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 359 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:40,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3086 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 16:27:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-01 16:27:40,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-03-01 16:27:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-01 16:27:40,737 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-01 16:27:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-01 16:27:40,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-01 16:27:40,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:40,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:40,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:40,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-03-01 16:27:40,738 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -322183032, now seen corresponding path program 207 times [2022-03-01 16:27:40,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:40,739 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058490414] [2022-03-01 16:27:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:40,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:41,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:41,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058490414] [2022-03-01 16:27:41,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058490414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:41,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:41,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:27:41,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012977177] [2022-03-01 16:27:41,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:41,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:27:41,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:27:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:27:41,072 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:44,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:27:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:45,345 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-03-01 16:27:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:27:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:45,347 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:27:45,347 INFO L226 Difference]: Without dead ends: 1222 [2022-03-01 16:27:45,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:27:45,348 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 385 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:45,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 2875 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-01 16:27:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-01 16:27:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-03-01 16:27:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4925788497217067) internal successors, (2687), 1078 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-01 16:27:45,367 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-01 16:27:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:45,367 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-01 16:27:45,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-01 16:27:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:45,368 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:45,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:45,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-03-01 16:27:45,368 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash 3265194, now seen corresponding path program 208 times [2022-03-01 16:27:45,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:45,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294930117] [2022-03-01 16:27:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:45,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:45,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:45,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294930117] [2022-03-01 16:27:45,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294930117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:45,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:45,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:27:45,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715619419] [2022-03-01 16:27:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:45,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:27:45,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:27:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:27:45,665 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:47,358 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-03-01 16:27:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:27:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:47,360 INFO L225 Difference]: With dead ends: 1341 [2022-03-01 16:27:47,360 INFO L226 Difference]: Without dead ends: 1191 [2022-03-01 16:27:47,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=3271, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:27:47,362 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 365 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:47,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2998 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:27:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-01 16:27:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-03-01 16:27:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:27:47,372 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:27:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:47,372 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:27:47,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:27:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:47,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:47,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:47,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-01 16:27:47,374 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash 864847528, now seen corresponding path program 209 times [2022-03-01 16:27:47,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:47,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516205155] [2022-03-01 16:27:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:47,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:47,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:47,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516205155] [2022-03-01 16:27:47,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516205155] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:47,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:47,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:47,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742145477] [2022-03-01 16:27:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:47,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:47,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:47,784 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:52,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:27:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:52,183 INFO L93 Difference]: Finished difference Result 1330 states and 3300 transitions. [2022-03-01 16:27:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:27:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:52,184 INFO L225 Difference]: With dead ends: 1330 [2022-03-01 16:27:52,185 INFO L226 Difference]: Without dead ends: 1232 [2022-03-01 16:27:52,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=2926, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:27:52,185 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 337 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:52,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2745 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-03-01 16:27:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-03-01 16:27:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1099. [2022-03-01 16:27:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:27:52,195 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:27:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:52,195 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:27:52,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:27:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:52,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:52,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:52,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-03-01 16:27:52,196 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2113586876, now seen corresponding path program 210 times [2022-03-01 16:27:52,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:52,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598646697] [2022-03-01 16:27:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:52,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:52,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598646697] [2022-03-01 16:27:52,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598646697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:52,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:52,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:52,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046239247] [2022-03-01 16:27:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:52,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:52,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:52,611 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:55,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:27:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:56,259 INFO L93 Difference]: Finished difference Result 1350 states and 3339 transitions. [2022-03-01 16:27:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:27:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:56,261 INFO L225 Difference]: With dead ends: 1350 [2022-03-01 16:27:56,261 INFO L226 Difference]: Without dead ends: 1191 [2022-03-01 16:27:56,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:27:56,262 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 296 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:56,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2957 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1157 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:27:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-01 16:27:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1103. [2022-03-01 16:27:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4872958257713247) internal successors, (2741), 1102 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-03-01 16:27:56,272 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-03-01 16:27:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:56,272 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-03-01 16:27:56,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-03-01 16:27:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:56,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:56,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:56,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-03-01 16:27:56,273 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 158581418, now seen corresponding path program 211 times [2022-03-01 16:27:56,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:56,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730766868] [2022-03-01 16:27:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:56,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:56,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730766868] [2022-03-01 16:27:56,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730766868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:56,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:56,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:56,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750798461] [2022-03-01 16:27:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:56,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:56,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:56,669 INFO L87 Difference]: Start difference. First operand 1103 states and 2741 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:59,178 INFO L93 Difference]: Finished difference Result 1337 states and 3318 transitions. [2022-03-01 16:27:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:27:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:27:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:59,180 INFO L225 Difference]: With dead ends: 1337 [2022-03-01 16:27:59,180 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:27:59,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=2721, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:27:59,180 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:59,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2674 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:27:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:27:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1127. [2022-03-01 16:27:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4893428063943164) internal successors, (2803), 1126 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2803 transitions. [2022-03-01 16:27:59,190 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2803 transitions. Word has length 79 [2022-03-01 16:27:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:59,190 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2803 transitions. [2022-03-01 16:27:59,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2803 transitions. [2022-03-01 16:27:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:27:59,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:59,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:59,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-01 16:27:59,193 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -208313012, now seen corresponding path program 212 times [2022-03-01 16:27:59,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:59,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887562765] [2022-03-01 16:27:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:59,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:59,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887562765] [2022-03-01 16:27:59,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887562765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:27:59,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:27:59,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:27:59,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472086578] [2022-03-01 16:27:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:27:59,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:27:59,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:27:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:27:59,550 INFO L87 Difference]: Start difference. First operand 1127 states and 2803 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:01,155 INFO L93 Difference]: Finished difference Result 1348 states and 3342 transitions. [2022-03-01 16:28:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:28:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:01,157 INFO L225 Difference]: With dead ends: 1348 [2022-03-01 16:28:01,158 INFO L226 Difference]: Without dead ends: 1250 [2022-03-01 16:28:01,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:28:01,158 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 305 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:01,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2868 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:28:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-01 16:28:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1131. [2022-03-01 16:28:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4867256637168142) internal successors, (2810), 1130 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2810 transitions. [2022-03-01 16:28:01,170 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2810 transitions. Word has length 79 [2022-03-01 16:28:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:01,170 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2810 transitions. [2022-03-01 16:28:01,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2810 transitions. [2022-03-01 16:28:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:01,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:01,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:01,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-01 16:28:01,171 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 505924266, now seen corresponding path program 213 times [2022-03-01 16:28:01,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:01,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267224765] [2022-03-01 16:28:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:01,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:01,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:01,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267224765] [2022-03-01 16:28:01,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267224765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:01,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:01,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:01,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313289822] [2022-03-01 16:28:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:01,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:01,551 INFO L87 Difference]: Start difference. First operand 1131 states and 2810 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:03,536 INFO L93 Difference]: Finished difference Result 1316 states and 3258 transitions. [2022-03-01 16:28:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:28:03,536 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:03,538 INFO L225 Difference]: With dead ends: 1316 [2022-03-01 16:28:03,538 INFO L226 Difference]: Without dead ends: 1207 [2022-03-01 16:28:03,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=262, Invalid=2818, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:28:03,539 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 356 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:03,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2801 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:28:03,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-01 16:28:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1123. [2022-03-01 16:28:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4884135472370765) internal successors, (2792), 1122 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2792 transitions. [2022-03-01 16:28:03,550 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2792 transitions. Word has length 79 [2022-03-01 16:28:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:03,550 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2792 transitions. [2022-03-01 16:28:03,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2792 transitions. [2022-03-01 16:28:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:03,551 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:03,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-01 16:28:03,551 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash 976615080, now seen corresponding path program 214 times [2022-03-01 16:28:03,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:03,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282749359] [2022-03-01 16:28:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:03,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:03,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282749359] [2022-03-01 16:28:03,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282749359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:03,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:03,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:03,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778820170] [2022-03-01 16:28:03,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:03,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:03,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:03,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:03,945 INFO L87 Difference]: Start difference. First operand 1123 states and 2792 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:05,839 INFO L93 Difference]: Finished difference Result 1370 states and 3394 transitions. [2022-03-01 16:28:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:28:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:05,841 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:28:05,841 INFO L226 Difference]: Without dead ends: 1272 [2022-03-01 16:28:05,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=3029, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:28:05,841 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 352 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:05,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2954 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:28:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-03-01 16:28:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1115. [2022-03-01 16:28:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.490125673249551) internal successors, (2774), 1114 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-03-01 16:28:05,852 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-03-01 16:28:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:05,852 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-03-01 16:28:05,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-03-01 16:28:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:05,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:05,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:05,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-01 16:28:05,853 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2001819324, now seen corresponding path program 215 times [2022-03-01 16:28:05,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:05,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250022386] [2022-03-01 16:28:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:05,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:06,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:06,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250022386] [2022-03-01 16:28:06,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250022386] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:06,212 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:06,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:06,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508716014] [2022-03-01 16:28:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:06,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:06,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:06,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:06,212 INFO L87 Difference]: Start difference. First operand 1115 states and 2774 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:07,771 INFO L93 Difference]: Finished difference Result 1306 states and 3230 transitions. [2022-03-01 16:28:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:28:07,772 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:07,773 INFO L225 Difference]: With dead ends: 1306 [2022-03-01 16:28:07,773 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:28:07,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:28:07,774 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 330 mSDsluCounter, 2743 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:07,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2793 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:28:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:28:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1063. [2022-03-01 16:28:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:28:07,783 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:28:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:07,783 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:28:07,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:28:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:07,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:07,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:07,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-01 16:28:07,784 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:07,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:07,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1810498950, now seen corresponding path program 216 times [2022-03-01 16:28:07,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:07,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471657018] [2022-03-01 16:28:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:07,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:08,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:08,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471657018] [2022-03-01 16:28:08,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471657018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:08,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:08,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:28:08,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104557610] [2022-03-01 16:28:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:08,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:28:08,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:28:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:28:08,095 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:10,494 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-01 16:28:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:28:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:10,496 INFO L225 Difference]: With dead ends: 1361 [2022-03-01 16:28:10,496 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:28:10,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=3607, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:28:10,497 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 371 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:10,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 3259 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:28:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:28:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-01 16:28:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-01 16:28:10,507 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-01 16:28:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:10,507 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-01 16:28:10,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-01 16:28:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:10,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:10,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:10,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-01 16:28:10,509 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935454, now seen corresponding path program 217 times [2022-03-01 16:28:10,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:10,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307957223] [2022-03-01 16:28:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:10,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:10,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307957223] [2022-03-01 16:28:10,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307957223] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:10,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:10,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:28:10,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939791120] [2022-03-01 16:28:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:10,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:28:10,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:28:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:28:10,873 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:12,737 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-01 16:28:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:28:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:12,739 INFO L225 Difference]: With dead ends: 1317 [2022-03-01 16:28:12,739 INFO L226 Difference]: Without dead ends: 1182 [2022-03-01 16:28:12,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=3491, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:28:12,740 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 334 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:12,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3371 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:28:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-01 16:28:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-01 16:28:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-01 16:28:12,751 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-01 16:28:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:12,751 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-01 16:28:12,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-01 16:28:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:12,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:12,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:12,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-01 16:28:12,752 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1996516812, now seen corresponding path program 218 times [2022-03-01 16:28:12,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:12,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311291423] [2022-03-01 16:28:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:13,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:13,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311291423] [2022-03-01 16:28:13,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311291423] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:13,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:13,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:13,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525063565] [2022-03-01 16:28:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:13,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:13,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:13,043 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:14,427 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-01 16:28:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:28:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:14,429 INFO L225 Difference]: With dead ends: 1305 [2022-03-01 16:28:14,429 INFO L226 Difference]: Without dead ends: 1131 [2022-03-01 16:28:14,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:28:14,430 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 358 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:14,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2887 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:28:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-01 16:28:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-01 16:28:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:28:14,443 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:28:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:14,444 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:28:14,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:28:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:14,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:14,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:14,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-01 16:28:14,445 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1856760466, now seen corresponding path program 219 times [2022-03-01 16:28:14,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:14,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057179335] [2022-03-01 16:28:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:14,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:14,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057179335] [2022-03-01 16:28:14,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057179335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:14,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:14,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:14,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601135478] [2022-03-01 16:28:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:14,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:14,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:14,769 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:16,818 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-01 16:28:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:28:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:16,820 INFO L225 Difference]: With dead ends: 1339 [2022-03-01 16:28:16,820 INFO L226 Difference]: Without dead ends: 1241 [2022-03-01 16:28:16,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:28:16,821 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 300 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:16,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2911 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:28:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-01 16:28:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-03-01 16:28:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:28:16,848 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:28:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:16,848 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:28:16,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:28:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:16,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:16,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:16,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-01 16:28:16,849 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash -540227574, now seen corresponding path program 220 times [2022-03-01 16:28:16,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:16,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288549921] [2022-03-01 16:28:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:17,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:17,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288549921] [2022-03-01 16:28:17,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288549921] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:17,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:17,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:17,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677928420] [2022-03-01 16:28:17,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:17,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:17,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:17,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:17,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:17,234 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:19,195 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-01 16:28:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:28:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:19,196 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:28:19,196 INFO L226 Difference]: Without dead ends: 1172 [2022-03-01 16:28:19,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:28:19,197 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 332 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:19,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2892 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:28:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-01 16:28:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-03-01 16:28:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:28:19,207 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:28:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:19,207 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:28:19,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:28:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:19,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:19,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:19,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-01 16:28:19,208 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1908233138, now seen corresponding path program 221 times [2022-03-01 16:28:19,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:19,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271302162] [2022-03-01 16:28:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:19,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:19,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271302162] [2022-03-01 16:28:19,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271302162] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:19,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:19,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:19,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126697217] [2022-03-01 16:28:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:19,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:19,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:19,524 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:22,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:28:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:23,623 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-01 16:28:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:28:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:23,625 INFO L225 Difference]: With dead ends: 1283 [2022-03-01 16:28:23,625 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 16:28:23,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2340, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:28:23,625 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 307 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:23,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2521 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 934 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-01 16:28:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 16:28:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-03-01 16:28:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.483430799220273) internal successors, (2548), 1026 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2548 transitions. [2022-03-01 16:28:23,635 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2548 transitions. Word has length 79 [2022-03-01 16:28:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:23,635 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2548 transitions. [2022-03-01 16:28:23,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2548 transitions. [2022-03-01 16:28:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:23,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:23,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:23,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-01 16:28:23,636 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1023336312, now seen corresponding path program 222 times [2022-03-01 16:28:23,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:23,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613634156] [2022-03-01 16:28:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:23,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:23,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613634156] [2022-03-01 16:28:23,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613634156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:23,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:23,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:23,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83279331] [2022-03-01 16:28:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:23,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:23,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:23,936 INFO L87 Difference]: Start difference. First operand 1027 states and 2548 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:25,063 INFO L93 Difference]: Finished difference Result 1249 states and 3092 transitions. [2022-03-01 16:28:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:28:25,064 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:25,065 INFO L225 Difference]: With dead ends: 1249 [2022-03-01 16:28:25,065 INFO L226 Difference]: Without dead ends: 1135 [2022-03-01 16:28:25,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:28:25,066 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 249 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:25,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 2629 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-03-01 16:28:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1063. [2022-03-01 16:28:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-01 16:28:25,086 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-01 16:28:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:25,086 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-01 16:28:25,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-01 16:28:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:25,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:25,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:25,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-03-01 16:28:25,088 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1390230742, now seen corresponding path program 223 times [2022-03-01 16:28:25,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:25,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392226584] [2022-03-01 16:28:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:25,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:25,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392226584] [2022-03-01 16:28:25,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392226584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:25,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:25,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:25,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754636756] [2022-03-01 16:28:25,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:25,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:25,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:25,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:25,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:25,465 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:26,455 INFO L93 Difference]: Finished difference Result 1260 states and 3116 transitions. [2022-03-01 16:28:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:28:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:26,457 INFO L225 Difference]: With dead ends: 1260 [2022-03-01 16:28:26,457 INFO L226 Difference]: Without dead ends: 1162 [2022-03-01 16:28:26,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:28:26,457 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 292 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:26,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2354 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-01 16:28:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1067. [2022-03-01 16:28:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-01 16:28:26,467 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-01 16:28:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:26,467 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-01 16:28:26,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-01 16:28:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:26,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:26,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:26,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-03-01 16:28:26,468 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash -675993464, now seen corresponding path program 224 times [2022-03-01 16:28:26,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:26,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214078887] [2022-03-01 16:28:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:26,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:26,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214078887] [2022-03-01 16:28:26,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214078887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:26,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:26,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:26,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614591429] [2022-03-01 16:28:26,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:26,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:26,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:26,745 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:27,821 INFO L93 Difference]: Finished difference Result 1228 states and 3032 transitions. [2022-03-01 16:28:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:28:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:27,822 INFO L225 Difference]: With dead ends: 1228 [2022-03-01 16:28:27,822 INFO L226 Difference]: Without dead ends: 1119 [2022-03-01 16:28:27,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:28:27,823 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 286 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:27,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2409 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-01 16:28:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1059. [2022-03-01 16:28:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-01 16:28:27,833 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-01 16:28:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:27,833 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-01 16:28:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-01 16:28:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:27,834 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:27,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:27,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-01 16:28:27,834 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash -205302650, now seen corresponding path program 225 times [2022-03-01 16:28:27,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:27,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860443339] [2022-03-01 16:28:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:28,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:28,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860443339] [2022-03-01 16:28:28,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860443339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:28,119 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:28,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:28,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697511884] [2022-03-01 16:28:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:28,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:28,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:28,120 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:29,761 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-01 16:28:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:28:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:29,762 INFO L225 Difference]: With dead ends: 1282 [2022-03-01 16:28:29,763 INFO L226 Difference]: Without dead ends: 1184 [2022-03-01 16:28:29,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2229, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:28:29,763 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 279 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:29,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2675 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:28:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-01 16:28:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1083. [2022-03-01 16:28:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4861367837338264) internal successors, (2690), 1082 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-03-01 16:28:29,773 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-03-01 16:28:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:29,773 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-03-01 16:28:29,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-03-01 16:28:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:29,774 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:29,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:29,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-01 16:28:29,774 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1111230242, now seen corresponding path program 226 times [2022-03-01 16:28:29,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:29,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698668215] [2022-03-01 16:28:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:30,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:30,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698668215] [2022-03-01 16:28:30,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698668215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:30,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:30,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:30,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83539179] [2022-03-01 16:28:30,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:30,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:30,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:30,137 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:31,245 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-03-01 16:28:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:28:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:31,246 INFO L225 Difference]: With dead ends: 1250 [2022-03-01 16:28:31,246 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 16:28:31,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:28:31,247 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 261 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:31,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2626 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 16:28:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-01 16:28:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:28:31,257 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:28:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:31,257 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:28:31,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:28:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:31,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:31,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:31,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-01 16:28:31,258 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 628581220, now seen corresponding path program 227 times [2022-03-01 16:28:31,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:31,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464252598] [2022-03-01 16:28:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:31,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:31,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464252598] [2022-03-01 16:28:31,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464252598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:31,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:31,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:31,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622108367] [2022-03-01 16:28:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:31,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:31,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:31,645 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:33,209 INFO L93 Difference]: Finished difference Result 1325 states and 3276 transitions. [2022-03-01 16:28:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:28:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:33,211 INFO L225 Difference]: With dead ends: 1325 [2022-03-01 16:28:33,211 INFO L226 Difference]: Without dead ends: 1227 [2022-03-01 16:28:33,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=2828, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:28:33,212 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 295 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:33,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2945 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:28:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-01 16:28:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1079. [2022-03-01 16:28:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.485157699443414) internal successors, (2679), 1078 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-03-01 16:28:33,222 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-03-01 16:28:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:33,222 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-03-01 16:28:33,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-03-01 16:28:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:33,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:33,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:33,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-01 16:28:33,223 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1945114112, now seen corresponding path program 228 times [2022-03-01 16:28:33,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:33,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609300160] [2022-03-01 16:28:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:33,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:33,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609300160] [2022-03-01 16:28:33,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609300160] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:33,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:33,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:33,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625417425] [2022-03-01 16:28:33,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:33,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:33,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:33,584 INFO L87 Difference]: Start difference. First operand 1079 states and 2679 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:35,026 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-03-01 16:28:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:28:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:35,028 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 16:28:35,028 INFO L226 Difference]: Without dead ends: 1146 [2022-03-01 16:28:35,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:28:35,029 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 297 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:35,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3071 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:28:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-03-01 16:28:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1055. [2022-03-01 16:28:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 2.48292220113852) internal successors, (2617), 1054 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-03-01 16:28:35,039 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-03-01 16:28:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:35,039 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-03-01 16:28:35,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-03-01 16:28:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:35,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:35,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:35,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-01 16:28:35,040 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 814599082, now seen corresponding path program 229 times [2022-03-01 16:28:35,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:35,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430403729] [2022-03-01 16:28:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:35,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:35,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430403729] [2022-03-01 16:28:35,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430403729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:35,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:35,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:35,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301278685] [2022-03-01 16:28:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:35,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:35,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:35,390 INFO L87 Difference]: Start difference. First operand 1055 states and 2617 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:36,529 INFO L93 Difference]: Finished difference Result 1269 states and 3126 transitions. [2022-03-01 16:28:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:28:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:36,531 INFO L225 Difference]: With dead ends: 1269 [2022-03-01 16:28:36,531 INFO L226 Difference]: Without dead ends: 1103 [2022-03-01 16:28:36,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:28:36,532 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 317 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:36,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2601 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-01 16:28:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-01 16:28:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4847036328871894) internal successors, (2599), 1046 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2599 transitions. [2022-03-01 16:28:36,541 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2599 transitions. Word has length 79 [2022-03-01 16:28:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:36,541 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2599 transitions. [2022-03-01 16:28:36,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2599 transitions. [2022-03-01 16:28:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:36,542 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:36,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:36,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-01 16:28:36,542 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1018020498, now seen corresponding path program 230 times [2022-03-01 16:28:36,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:36,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932133502] [2022-03-01 16:28:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:36,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:36,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:36,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932133502] [2022-03-01 16:28:36,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932133502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:36,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:36,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:36,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67078994] [2022-03-01 16:28:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:36,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:36,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:36,948 INFO L87 Difference]: Start difference. First operand 1047 states and 2599 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:38,574 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-03-01 16:28:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:28:38,574 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:38,576 INFO L225 Difference]: With dead ends: 1327 [2022-03-01 16:28:38,576 INFO L226 Difference]: Without dead ends: 1229 [2022-03-01 16:28:38,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:28:38,576 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 304 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:38,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2877 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:28:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-01 16:28:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1095. [2022-03-01 16:28:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.489031078610603) internal successors, (2723), 1094 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-01 16:28:38,586 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-01 16:28:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-01 16:28:38,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-01 16:28:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:38,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:38,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:38,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-01 16:28:38,588 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:38,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:38,588 INFO L85 PathProgramCache]: Analyzing trace with hash 298512394, now seen corresponding path program 231 times [2022-03-01 16:28:38,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:38,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310348506] [2022-03-01 16:28:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:38,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:38,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310348506] [2022-03-01 16:28:38,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310348506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:38,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:38,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:38,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486617031] [2022-03-01 16:28:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:38,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:38,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:38,950 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:41,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:28:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:42,540 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-01 16:28:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:28:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:42,542 INFO L225 Difference]: With dead ends: 1295 [2022-03-01 16:28:42,542 INFO L226 Difference]: Without dead ends: 1160 [2022-03-01 16:28:42,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:28:42,543 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 319 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:42,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2699 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1036 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:28:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-01 16:28:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1071. [2022-03-01 16:28:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4831775700934577) internal successors, (2657), 1070 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-03-01 16:28:42,552 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-03-01 16:28:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:42,553 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-03-01 16:28:42,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-03-01 16:28:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:42,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:42,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:42,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-01 16:28:42,554 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1069493170, now seen corresponding path program 232 times [2022-03-01 16:28:42,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:42,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044314633] [2022-03-01 16:28:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:42,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:42,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044314633] [2022-03-01 16:28:42,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044314633] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:42,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:42,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:42,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640871202] [2022-03-01 16:28:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:42,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:42,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:42,898 INFO L87 Difference]: Start difference. First operand 1071 states and 2657 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:44,088 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-01 16:28:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:28:44,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:44,090 INFO L225 Difference]: With dead ends: 1271 [2022-03-01 16:28:44,090 INFO L226 Difference]: Without dead ends: 1083 [2022-03-01 16:28:44,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:28:44,091 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 275 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:44,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2608 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-01 16:28:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-01 16:28:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4826589595375723) internal successors, (2577), 1038 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-01 16:28:44,100 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-01 16:28:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:44,100 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-01 16:28:44,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-01 16:28:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:44,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:44,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:44,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-03-01 16:28:44,101 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1680026352, now seen corresponding path program 233 times [2022-03-01 16:28:44,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:44,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651165390] [2022-03-01 16:28:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:44,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:44,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651165390] [2022-03-01 16:28:44,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651165390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:44,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:44,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:28:44,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988969046] [2022-03-01 16:28:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:44,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:28:44,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:28:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:28:44,469 INFO L87 Difference]: Start difference. First operand 1039 states and 2577 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:46,084 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-03-01 16:28:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:28:46,085 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:46,086 INFO L225 Difference]: With dead ends: 1367 [2022-03-01 16:28:46,086 INFO L226 Difference]: Without dead ends: 1269 [2022-03-01 16:28:46,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:28:46,087 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 341 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:46,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3051 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:28:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-03-01 16:28:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1091. [2022-03-01 16:28:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-01 16:28:46,097 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-01 16:28:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:46,097 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-01 16:28:46,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-01 16:28:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:46,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:46,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:46,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-03-01 16:28:46,100 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash -363493460, now seen corresponding path program 234 times [2022-03-01 16:28:46,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:46,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250309627] [2022-03-01 16:28:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:46,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:46,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250309627] [2022-03-01 16:28:46,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250309627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:46,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:46,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:28:46,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421570180] [2022-03-01 16:28:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:46,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:28:46,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:28:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:28:46,432 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:48,140 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-03-01 16:28:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:28:48,140 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:48,142 INFO L225 Difference]: With dead ends: 1323 [2022-03-01 16:28:48,142 INFO L226 Difference]: Without dead ends: 1188 [2022-03-01 16:28:48,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=275, Invalid=3385, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:28:48,142 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 327 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:48,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 3162 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:28:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-03-01 16:28:48,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1067. [2022-03-01 16:28:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4821763602251408) internal successors, (2646), 1066 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-03-01 16:28:48,151 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-03-01 16:28:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:48,151 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-03-01 16:28:48,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-03-01 16:28:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:48,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:48,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:48,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-01 16:28:48,153 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1731499024, now seen corresponding path program 235 times [2022-03-01 16:28:48,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:48,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182366554] [2022-03-01 16:28:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:48,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:48,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182366554] [2022-03-01 16:28:48,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182366554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:48,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:48,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:48,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509009883] [2022-03-01 16:28:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:48,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:48,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:48,506 INFO L87 Difference]: Start difference. First operand 1067 states and 2646 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:49,743 INFO L93 Difference]: Finished difference Result 1287 states and 3163 transitions. [2022-03-01 16:28:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:28:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:49,744 INFO L225 Difference]: With dead ends: 1287 [2022-03-01 16:28:49,744 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 16:28:49,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=2634, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:28:49,745 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 330 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:49,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2667 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 16:28:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1043. [2022-03-01 16:28:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 2.4798464491362764) internal successors, (2584), 1042 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2584 transitions. [2022-03-01 16:28:49,754 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2584 transitions. Word has length 79 [2022-03-01 16:28:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:49,754 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2584 transitions. [2022-03-01 16:28:49,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2584 transitions. [2022-03-01 16:28:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:49,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:49,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:49,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-01 16:28:49,755 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:49,756 INFO L85 PathProgramCache]: Analyzing trace with hash 253993096, now seen corresponding path program 236 times [2022-03-01 16:28:49,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:49,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490793561] [2022-03-01 16:28:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:50,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:50,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490793561] [2022-03-01 16:28:50,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490793561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:50,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:50,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:50,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622250716] [2022-03-01 16:28:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:50,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:50,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:50,071 INFO L87 Difference]: Start difference. First operand 1043 states and 2584 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:51,261 INFO L93 Difference]: Finished difference Result 1302 states and 3198 transitions. [2022-03-01 16:28:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:28:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:51,263 INFO L225 Difference]: With dead ends: 1302 [2022-03-01 16:28:51,263 INFO L226 Difference]: Without dead ends: 1071 [2022-03-01 16:28:51,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:28:51,263 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 292 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:51,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2880 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:51,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-01 16:28:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1027. [2022-03-01 16:28:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.47953216374269) internal successors, (2544), 1026 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-01 16:28:51,273 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-01 16:28:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:51,273 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-01 16:28:51,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-01 16:28:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:51,274 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:51,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:51,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-01 16:28:51,274 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1441862078, now seen corresponding path program 237 times [2022-03-01 16:28:51,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:51,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922159843] [2022-03-01 16:28:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:51,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:51,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922159843] [2022-03-01 16:28:51,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922159843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:51,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:51,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:51,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615633990] [2022-03-01 16:28:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:51,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:51,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:51,640 INFO L87 Difference]: Start difference. First operand 1027 states and 2544 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:53,301 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-03-01 16:28:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:28:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:53,303 INFO L225 Difference]: With dead ends: 1343 [2022-03-01 16:28:53,303 INFO L226 Difference]: Without dead ends: 1245 [2022-03-01 16:28:53,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:28:53,304 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:53,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2803 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:28:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-01 16:28:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-03-01 16:28:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-01 16:28:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-01 16:28:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:53,314 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-01 16:28:53,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-01 16:28:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:53,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:53,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:53,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-01 16:28:53,316 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash -125329186, now seen corresponding path program 238 times [2022-03-01 16:28:53,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:53,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447240519] [2022-03-01 16:28:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:53,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:53,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447240519] [2022-03-01 16:28:53,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447240519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:53,686 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:53,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:28:53,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711687562] [2022-03-01 16:28:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:53,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:28:53,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:28:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:28:53,687 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:55,103 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-01 16:28:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:28:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:55,105 INFO L225 Difference]: With dead ends: 1299 [2022-03-01 16:28:55,105 INFO L226 Difference]: Without dead ends: 1164 [2022-03-01 16:28:55,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:28:55,105 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 309 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:55,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2916 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:28:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-01 16:28:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-03-01 16:28:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-01 16:28:55,115 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-01 16:28:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:55,115 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-01 16:28:55,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-01 16:28:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:55,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:55,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:55,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-01 16:28:55,116 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334750, now seen corresponding path program 239 times [2022-03-01 16:28:55,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:55,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194699262] [2022-03-01 16:28:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:55,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:55,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:55,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194699262] [2022-03-01 16:28:55,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194699262] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:55,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:55,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:28:55,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127551248] [2022-03-01 16:28:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:55,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:28:55,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:28:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:28:55,482 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:56,491 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-03-01 16:28:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:28:56,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:56,493 INFO L225 Difference]: With dead ends: 1263 [2022-03-01 16:28:56,493 INFO L226 Difference]: Without dead ends: 1083 [2022-03-01 16:28:56,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:28:56,493 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 298 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:56,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2574 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-01 16:28:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-01 16:28:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-01 16:28:56,502 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-01 16:28:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:56,502 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-01 16:28:56,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-01 16:28:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:56,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:56,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:56,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-01 16:28:56,504 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 492157370, now seen corresponding path program 240 times [2022-03-01 16:28:56,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:56,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445864289] [2022-03-01 16:28:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:56,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:56,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445864289] [2022-03-01 16:28:56,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445864289] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:56,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:56,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:28:56,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122821151] [2022-03-01 16:28:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:56,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:28:56,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:28:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:28:56,828 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:57,820 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-01 16:28:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:28:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:57,822 INFO L225 Difference]: With dead ends: 1286 [2022-03-01 16:28:57,822 INFO L226 Difference]: Without dead ends: 1067 [2022-03-01 16:28:57,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=1719, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:28:57,822 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 295 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:57,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2445 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-01 16:28:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-01 16:28:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.4777562862669247) internal successors, (2562), 1034 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-01 16:28:57,831 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-01 16:28:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:57,831 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-01 16:28:57,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-01 16:28:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:57,832 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:57,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:57,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-01 16:28:57,832 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:57,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1847743028, now seen corresponding path program 241 times [2022-03-01 16:28:57,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:57,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997511851] [2022-03-01 16:28:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:57,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:58,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:58,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997511851] [2022-03-01 16:28:58,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997511851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:58,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:58,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:28:58,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324501304] [2022-03-01 16:28:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:58,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:28:58,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:28:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:28:58,111 INFO L87 Difference]: Start difference. First operand 1035 states and 2562 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:59,038 INFO L93 Difference]: Finished difference Result 1312 states and 3213 transitions. [2022-03-01 16:28:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:28:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:28:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:59,040 INFO L225 Difference]: With dead ends: 1312 [2022-03-01 16:28:59,040 INFO L226 Difference]: Without dead ends: 1027 [2022-03-01 16:28:59,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:28:59,040 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 293 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:59,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2827 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-01 16:28:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2022-03-01 16:28:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 2.4810379241516967) internal successors, (2486), 1002 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2486 transitions. [2022-03-01 16:28:59,049 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2486 transitions. Word has length 79 [2022-03-01 16:28:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:59,049 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 2486 transitions. [2022-03-01 16:28:59,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2486 transitions. [2022-03-01 16:28:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:28:59,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:59,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:59,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-01 16:28:59,050 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:59,051 INFO L85 PathProgramCache]: Analyzing trace with hash -566943232, now seen corresponding path program 242 times [2022-03-01 16:28:59,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:59,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369983691] [2022-03-01 16:28:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:59,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:59,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:59,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369983691] [2022-03-01 16:28:59,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369983691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:59,406 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:28:59,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:28:59,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735605765] [2022-03-01 16:28:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:59,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:28:59,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:28:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:28:59,407 INFO L87 Difference]: Start difference. First operand 1003 states and 2486 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:00,289 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-03-01 16:29:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:29:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:00,291 INFO L225 Difference]: With dead ends: 1269 [2022-03-01 16:29:00,291 INFO L226 Difference]: Without dead ends: 1139 [2022-03-01 16:29:00,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:29:00,291 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 224 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:00,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 2334 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-01 16:29:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-03-01 16:29:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-01 16:29:00,301 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-01 16:29:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:00,301 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-01 16:29:00,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-01 16:29:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:00,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:00,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:00,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-01 16:29:00,302 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1420334398, now seen corresponding path program 243 times [2022-03-01 16:29:00,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:00,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511772692] [2022-03-01 16:29:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:00,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:00,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:00,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511772692] [2022-03-01 16:29:00,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511772692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:00,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:00,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:00,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136951523] [2022-03-01 16:29:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:00,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:00,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:00,577 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:01,417 INFO L93 Difference]: Finished difference Result 1264 states and 3127 transitions. [2022-03-01 16:29:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:29:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:01,419 INFO L225 Difference]: With dead ends: 1264 [2022-03-01 16:29:01,419 INFO L226 Difference]: Without dead ends: 1166 [2022-03-01 16:29:01,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:29:01,420 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 269 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:01,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2172 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:29:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-01 16:29:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1087. [2022-03-01 16:29:01,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-01 16:29:01,429 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-01 16:29:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:01,429 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-01 16:29:01,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-01 16:29:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:01,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:01,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:01,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-01 16:29:01,431 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash -706097120, now seen corresponding path program 244 times [2022-03-01 16:29:01,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:01,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247234309] [2022-03-01 16:29:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:01,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:01,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247234309] [2022-03-01 16:29:01,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247234309] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:01,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:01,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:01,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317506234] [2022-03-01 16:29:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:01,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:01,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:01,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:01,736 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:02,670 INFO L93 Difference]: Finished difference Result 1232 states and 3043 transitions. [2022-03-01 16:29:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:29:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:02,671 INFO L225 Difference]: With dead ends: 1232 [2022-03-01 16:29:02,672 INFO L226 Difference]: Without dead ends: 1119 [2022-03-01 16:29:02,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:02,672 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 245 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:02,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2446 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-01 16:29:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1075. [2022-03-01 16:29:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-01 16:29:02,681 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-01 16:29:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:02,681 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-01 16:29:02,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-01 16:29:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:02,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:02,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:02,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-01 16:29:02,683 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash -147138528, now seen corresponding path program 245 times [2022-03-01 16:29:02,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:02,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27940768] [2022-03-01 16:29:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:02,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:02,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27940768] [2022-03-01 16:29:02,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27940768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:02,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:02,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:02,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671323739] [2022-03-01 16:29:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:02,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:02,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:02,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:02,991 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:05,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:07,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:07,876 INFO L93 Difference]: Finished difference Result 1298 states and 3208 transitions. [2022-03-01 16:29:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-01 16:29:07,876 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:07,878 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 16:29:07,878 INFO L226 Difference]: Without dead ends: 1200 [2022-03-01 16:29:07,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:29:07,878 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 255 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:07,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2469 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 925 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-03-01 16:29:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-01 16:29:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1087. [2022-03-01 16:29:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-01 16:29:07,889 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-01 16:29:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:07,889 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-01 16:29:07,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-01 16:29:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:07,890 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:07,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:07,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-03-01 16:29:07,890 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 567098750, now seen corresponding path program 246 times [2022-03-01 16:29:07,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:07,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825570312] [2022-03-01 16:29:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:08,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:08,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825570312] [2022-03-01 16:29:08,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825570312] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:08,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:08,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:08,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731870736] [2022-03-01 16:29:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:08,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:08,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:08,253 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:09,247 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-01 16:29:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:29:09,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:09,249 INFO L225 Difference]: With dead ends: 1266 [2022-03-01 16:29:09,249 INFO L226 Difference]: Without dead ends: 1099 [2022-03-01 16:29:09,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:29:09,249 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 258 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:09,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2436 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-03-01 16:29:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1059. [2022-03-01 16:29:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-01 16:29:09,258 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-01 16:29:09,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:09,258 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-01 16:29:09,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-01 16:29:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:09,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:09,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:09,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-01 16:29:09,260 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2023485472, now seen corresponding path program 247 times [2022-03-01 16:29:09,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:09,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099356769] [2022-03-01 16:29:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:09,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:09,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099356769] [2022-03-01 16:29:09,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099356769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:09,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:09,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:09,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435096329] [2022-03-01 16:29:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:09,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:09,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:09,585 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:12,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:13,099 INFO L93 Difference]: Finished difference Result 1397 states and 3424 transitions. [2022-03-01 16:29:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:29:13,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:13,102 INFO L225 Difference]: With dead ends: 1397 [2022-03-01 16:29:13,102 INFO L226 Difference]: Without dead ends: 1299 [2022-03-01 16:29:13,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:29:13,102 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 314 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:13,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2726 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1033 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:29:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-03-01 16:29:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1075. [2022-03-01 16:29:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4878957169459963) internal successors, (2672), 1074 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-01 16:29:13,114 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-01 16:29:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:13,114 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-01 16:29:13,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-01 16:29:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:13,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:13,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:13,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-01 16:29:13,115 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1557244546, now seen corresponding path program 248 times [2022-03-01 16:29:13,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:13,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254874311] [2022-03-01 16:29:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:13,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:13,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254874311] [2022-03-01 16:29:13,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254874311] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:13,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:13,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:13,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32453669] [2022-03-01 16:29:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:13,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:13,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:13,397 INFO L87 Difference]: Start difference. First operand 1075 states and 2672 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:14,480 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-01 16:29:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:29:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:14,482 INFO L225 Difference]: With dead ends: 1289 [2022-03-01 16:29:14,482 INFO L226 Difference]: Without dead ends: 1138 [2022-03-01 16:29:14,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2231, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:29:14,483 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 288 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:14,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2702 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-03-01 16:29:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1063. [2022-03-01 16:29:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-01 16:29:14,493 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-01 16:29:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:14,493 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-01 16:29:14,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-01 16:29:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:14,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:14,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:14,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-01 16:29:14,494 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2085463962, now seen corresponding path program 249 times [2022-03-01 16:29:14,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:14,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821550097] [2022-03-01 16:29:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:14,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:14,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821550097] [2022-03-01 16:29:14,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821550097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:14,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:14,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:14,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146620237] [2022-03-01 16:29:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:14,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:14,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:14,829 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:15,823 INFO L93 Difference]: Finished difference Result 1261 states and 3104 transitions. [2022-03-01 16:29:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:29:15,823 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:15,824 INFO L225 Difference]: With dead ends: 1261 [2022-03-01 16:29:15,824 INFO L226 Difference]: Without dead ends: 1091 [2022-03-01 16:29:15,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:29:15,825 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 259 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:15,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2636 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-01 16:29:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-01 16:29:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-01 16:29:15,835 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-01 16:29:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:15,835 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-01 16:29:15,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-01 16:29:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:15,836 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:15,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:15,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-01 16:29:15,836 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2088188610, now seen corresponding path program 250 times [2022-03-01 16:29:15,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:15,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325930839] [2022-03-01 16:29:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:16,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:16,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325930839] [2022-03-01 16:29:16,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325930839] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:16,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:16,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:16,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521914249] [2022-03-01 16:29:16,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:16,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:16,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:16,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:16,184 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:17,565 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-03-01 16:29:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:29:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:17,567 INFO L225 Difference]: With dead ends: 1315 [2022-03-01 16:29:17,567 INFO L226 Difference]: Without dead ends: 1217 [2022-03-01 16:29:17,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:29:17,568 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 255 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:17,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2762 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:29:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-01 16:29:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1099. [2022-03-01 16:29:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-01 16:29:17,578 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-01 16:29:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:17,578 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-01 16:29:17,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-01 16:29:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:17,579 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:17,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:17,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-01 16:29:17,580 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash -890245794, now seen corresponding path program 251 times [2022-03-01 16:29:17,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:17,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724668491] [2022-03-01 16:29:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:17,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:17,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724668491] [2022-03-01 16:29:17,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724668491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:17,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:17,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:17,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647887919] [2022-03-01 16:29:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:17,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:17,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:17,941 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:19,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:20,378 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-01 16:29:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:29:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:20,380 INFO L225 Difference]: With dead ends: 1283 [2022-03-01 16:29:20,380 INFO L226 Difference]: Without dead ends: 1148 [2022-03-01 16:29:20,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:29:20,380 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 286 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:20,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2603 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 16:29:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-01 16:29:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1075. [2022-03-01 16:29:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:29:20,389 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:29:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:20,390 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:29:20,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:29:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:20,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:20,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:20,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-01 16:29:20,391 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2036715938, now seen corresponding path program 252 times [2022-03-01 16:29:20,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:20,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713925959] [2022-03-01 16:29:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:20,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:20,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713925959] [2022-03-01 16:29:20,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713925959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:20,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:20,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:20,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155617592] [2022-03-01 16:29:20,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:20,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:20,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:20,722 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:21,731 INFO L93 Difference]: Finished difference Result 1259 states and 3086 transitions. [2022-03-01 16:29:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:29:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:21,733 INFO L225 Difference]: With dead ends: 1259 [2022-03-01 16:29:21,733 INFO L226 Difference]: Without dead ends: 1063 [2022-03-01 16:29:21,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:29:21,733 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 242 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:21,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 2521 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-03-01 16:29:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1035. [2022-03-01 16:29:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.481624758220503) internal successors, (2566), 1034 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-01 16:29:21,742 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-01 16:29:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:21,742 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-01 16:29:21,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-01 16:29:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:21,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:21,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:21,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-01 16:29:21,744 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2112785090, now seen corresponding path program 253 times [2022-03-01 16:29:21,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:21,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307108383] [2022-03-01 16:29:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:22,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:22,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307108383] [2022-03-01 16:29:22,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307108383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:22,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:22,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:22,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121015854] [2022-03-01 16:29:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:22,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:22,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:22,038 INFO L87 Difference]: Start difference. First operand 1035 states and 2566 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:25,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:26,019 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-01 16:29:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:29:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:26,021 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:29:26,021 INFO L226 Difference]: Without dead ends: 1249 [2022-03-01 16:29:26,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:29:26,022 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 322 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:26,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2654 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1018 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-01 16:29:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-03-01 16:29:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1075. [2022-03-01 16:29:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:29:26,033 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:29:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:26,033 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:29:26,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:29:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:26,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:26,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:26,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-01 16:29:26,035 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash -865649314, now seen corresponding path program 254 times [2022-03-01 16:29:26,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:26,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171081266] [2022-03-01 16:29:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:26,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:26,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171081266] [2022-03-01 16:29:26,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171081266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:26,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:26,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:26,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126069279] [2022-03-01 16:29:26,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:26,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:26,416 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:27,945 INFO L93 Difference]: Finished difference Result 1331 states and 3280 transitions. [2022-03-01 16:29:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:29:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:27,947 INFO L225 Difference]: With dead ends: 1331 [2022-03-01 16:29:27,947 INFO L226 Difference]: Without dead ends: 1168 [2022-03-01 16:29:27,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:29:27,948 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 318 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:27,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2772 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:29:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-01 16:29:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-01 16:29:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-01 16:29:27,958 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-01 16:29:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:27,958 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-01 16:29:27,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-01 16:29:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:27,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:27,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:27,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-03-01 16:29:27,960 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2061312418, now seen corresponding path program 255 times [2022-03-01 16:29:27,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:27,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675256913] [2022-03-01 16:29:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:28,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:28,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675256913] [2022-03-01 16:29:28,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675256913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:28,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:28,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:28,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264381829] [2022-03-01 16:29:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:28,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:28,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:28,302 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:29,518 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-01 16:29:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:29:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:29,520 INFO L225 Difference]: With dead ends: 1267 [2022-03-01 16:29:29,520 INFO L226 Difference]: Without dead ends: 1087 [2022-03-01 16:29:29,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:29:29,520 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:29,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2552 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-01 16:29:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-01 16:29:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-01 16:29:29,530 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-01 16:29:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:29,530 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-01 16:29:29,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-01 16:29:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:29,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:29,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:29,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-03-01 16:29:29,532 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:29,532 INFO L85 PathProgramCache]: Analyzing trace with hash -248162758, now seen corresponding path program 256 times [2022-03-01 16:29:29,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:29,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725739280] [2022-03-01 16:29:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:29,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:29,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:29,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725739280] [2022-03-01 16:29:29,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725739280] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:29,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:29,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:29,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998750503] [2022-03-01 16:29:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:29,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:29,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:29,870 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:30,734 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-01 16:29:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:29:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:30,736 INFO L225 Difference]: With dead ends: 1282 [2022-03-01 16:29:30,736 INFO L226 Difference]: Without dead ends: 1055 [2022-03-01 16:29:30,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:30,737 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 257 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:30,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2626 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-03-01 16:29:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1027. [2022-03-01 16:29:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.47953216374269) internal successors, (2544), 1026 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-01 16:29:30,746 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-01 16:29:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:30,746 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-01 16:29:30,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-01 16:29:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:30,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:30,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:30,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-03-01 16:29:30,747 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 216748064, now seen corresponding path program 257 times [2022-03-01 16:29:30,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:30,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390575895] [2022-03-01 16:29:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:31,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:31,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390575895] [2022-03-01 16:29:31,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390575895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:31,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:31,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:31,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053445436] [2022-03-01 16:29:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:31,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:31,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:31,108 INFO L87 Difference]: Start difference. First operand 1027 states and 2544 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:33,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:36,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:36,892 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-03-01 16:29:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:29:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:36,894 INFO L225 Difference]: With dead ends: 1343 [2022-03-01 16:29:36,894 INFO L226 Difference]: Without dead ends: 1245 [2022-03-01 16:29:36,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:29:36,894 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 322 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:36,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2925 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1088 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-03-01 16:29:36,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-01 16:29:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1075. [2022-03-01 16:29:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:29:36,904 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:29:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:36,904 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:29:36,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:29:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:36,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:36,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:36,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-01 16:29:36,905 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1533280956, now seen corresponding path program 258 times [2022-03-01 16:29:36,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:36,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466567837] [2022-03-01 16:29:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:37,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:37,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466567837] [2022-03-01 16:29:37,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466567837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:37,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:37,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:37,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349547546] [2022-03-01 16:29:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:37,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:37,246 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:38,740 INFO L93 Difference]: Finished difference Result 1327 states and 3269 transitions. [2022-03-01 16:29:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:29:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:38,742 INFO L225 Difference]: With dead ends: 1327 [2022-03-01 16:29:38,742 INFO L226 Difference]: Without dead ends: 1164 [2022-03-01 16:29:38,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:29:38,742 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 322 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:38,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2897 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:29:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-01 16:29:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-03-01 16:29:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-01 16:29:38,752 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-01 16:29:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:38,752 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-01 16:29:38,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-01 16:29:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:38,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:38,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:38,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-01 16:29:38,754 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 165275392, now seen corresponding path program 259 times [2022-03-01 16:29:38,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:38,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164725212] [2022-03-01 16:29:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:38,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:39,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:39,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164725212] [2022-03-01 16:29:39,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164725212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:39,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:39,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:39,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749916412] [2022-03-01 16:29:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:39,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:39,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:39,089 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:40,217 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-03-01 16:29:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:29:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:40,219 INFO L225 Difference]: With dead ends: 1263 [2022-03-01 16:29:40,219 INFO L226 Difference]: Without dead ends: 1083 [2022-03-01 16:29:40,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=2152, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:29:40,219 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 286 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:40,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2551 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-01 16:29:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-01 16:29:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-01 16:29:40,229 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-01 16:29:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:40,229 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-01 16:29:40,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-01 16:29:40,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:40,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:40,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:40,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-01 16:29:40,230 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2144199784, now seen corresponding path program 260 times [2022-03-01 16:29:40,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:40,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858409791] [2022-03-01 16:29:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:40,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:40,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858409791] [2022-03-01 16:29:40,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858409791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:40,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:40,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:40,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336518307] [2022-03-01 16:29:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:40,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:40,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:40,520 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:41,325 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-01 16:29:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:29:41,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:41,327 INFO L225 Difference]: With dead ends: 1286 [2022-03-01 16:29:41,327 INFO L226 Difference]: Without dead ends: 1067 [2022-03-01 16:29:41,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:29:41,328 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 271 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:41,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2558 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:29:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-01 16:29:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-01 16:29:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.4777562862669247) internal successors, (2562), 1034 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-01 16:29:41,337 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-01 16:29:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:41,337 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-01 16:29:41,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:41,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-01 16:29:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:41,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:41,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:41,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-01 16:29:41,339 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash -189132886, now seen corresponding path program 261 times [2022-03-01 16:29:41,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:41,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400585102] [2022-03-01 16:29:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:41,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:41,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400585102] [2022-03-01 16:29:41,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400585102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:41,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:41,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:29:41,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768632791] [2022-03-01 16:29:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:41,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:29:41,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:29:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:29:41,604 INFO L87 Difference]: Start difference. First operand 1035 states and 2562 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:42,411 INFO L93 Difference]: Finished difference Result 1304 states and 3191 transitions. [2022-03-01 16:29:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:29:42,412 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:42,413 INFO L225 Difference]: With dead ends: 1304 [2022-03-01 16:29:42,413 INFO L226 Difference]: Without dead ends: 1027 [2022-03-01 16:29:42,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:29:42,414 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 290 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:42,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2619 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:29:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-01 16:29:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1011. [2022-03-01 16:29:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 2.4752475247524752) internal successors, (2500), 1010 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2500 transitions. [2022-03-01 16:29:42,422 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2500 transitions. Word has length 79 [2022-03-01 16:29:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:42,423 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 2500 transitions. [2022-03-01 16:29:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2500 transitions. [2022-03-01 16:29:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:42,424 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:42,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:42,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-01 16:29:42,424 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2043254816, now seen corresponding path program 262 times [2022-03-01 16:29:42,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:42,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346416242] [2022-03-01 16:29:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:42,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:42,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346416242] [2022-03-01 16:29:42,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346416242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:42,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:42,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:29:42,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341056721] [2022-03-01 16:29:42,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:42,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:29:42,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:29:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:29:42,801 INFO L87 Difference]: Start difference. First operand 1011 states and 2500 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:45,030 INFO L93 Difference]: Finished difference Result 1319 states and 3247 transitions. [2022-03-01 16:29:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:29:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:45,032 INFO L225 Difference]: With dead ends: 1319 [2022-03-01 16:29:45,032 INFO L226 Difference]: Without dead ends: 1221 [2022-03-01 16:29:45,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:29:45,033 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 299 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:45,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 3037 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:29:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-03-01 16:29:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1075. [2022-03-01 16:29:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-01 16:29:45,043 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-01 16:29:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:45,043 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-01 16:29:45,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-01 16:29:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:45,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:45,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:45,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-01 16:29:45,053 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -935179588, now seen corresponding path program 263 times [2022-03-01 16:29:45,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:45,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657825612] [2022-03-01 16:29:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:45,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:45,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657825612] [2022-03-01 16:29:45,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657825612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:45,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:45,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:29:45,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305488644] [2022-03-01 16:29:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:45,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:29:45,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:29:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:29:45,370 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:46,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:46,978 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-01 16:29:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:29:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:46,980 INFO L225 Difference]: With dead ends: 1275 [2022-03-01 16:29:46,980 INFO L226 Difference]: Without dead ends: 1140 [2022-03-01 16:29:46,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=2944, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:29:46,980 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 301 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:46,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3155 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:29:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-03-01 16:29:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1051. [2022-03-01 16:29:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.478095238095238) internal successors, (2602), 1050 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2602 transitions. [2022-03-01 16:29:46,990 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2602 transitions. Word has length 79 [2022-03-01 16:29:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:46,990 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2602 transitions. [2022-03-01 16:29:46,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2602 transitions. [2022-03-01 16:29:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:46,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:46,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:46,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-01 16:29:46,991 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1991782144, now seen corresponding path program 264 times [2022-03-01 16:29:46,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:46,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726507190] [2022-03-01 16:29:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:47,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:47,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726507190] [2022-03-01 16:29:47,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726507190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:47,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:47,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:47,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850525796] [2022-03-01 16:29:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:47,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:47,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:47,356 INFO L87 Difference]: Start difference. First operand 1051 states and 2602 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:48,550 INFO L93 Difference]: Finished difference Result 1239 states and 3031 transitions. [2022-03-01 16:29:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:29:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:48,551 INFO L225 Difference]: With dead ends: 1239 [2022-03-01 16:29:48,551 INFO L226 Difference]: Without dead ends: 1059 [2022-03-01 16:29:48,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:29:48,552 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 290 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:48,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2682 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-03-01 16:29:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1027. [2022-03-01 16:29:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.4756335282651074) internal successors, (2540), 1026 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2540 transitions. [2022-03-01 16:29:48,561 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2540 transitions. Word has length 79 [2022-03-01 16:29:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:48,561 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2540 transitions. [2022-03-01 16:29:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2540 transitions. [2022-03-01 16:29:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:48,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:48,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:48,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-01 16:29:48,562 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash -317693032, now seen corresponding path program 265 times [2022-03-01 16:29:48,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:48,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35229583] [2022-03-01 16:29:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:48,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:48,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35229583] [2022-03-01 16:29:48,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35229583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:48,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:48,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:48,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136414212] [2022-03-01 16:29:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:48,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:48,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:48,916 INFO L87 Difference]: Start difference. First operand 1027 states and 2540 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:49,873 INFO L93 Difference]: Finished difference Result 1262 states and 3088 transitions. [2022-03-01 16:29:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:29:49,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:49,875 INFO L225 Difference]: With dead ends: 1262 [2022-03-01 16:29:49,875 INFO L226 Difference]: Without dead ends: 1043 [2022-03-01 16:29:49,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:29:49,875 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 299 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:49,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2419 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-01 16:29:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-03-01 16:29:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.474559686888454) internal successors, (2529), 1022 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2529 transitions. [2022-03-01 16:29:49,884 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2529 transitions. Word has length 79 [2022-03-01 16:29:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:49,885 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2529 transitions. [2022-03-01 16:29:49,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2529 transitions. [2022-03-01 16:29:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:49,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:49,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:49,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-03-01 16:29:49,886 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1637373866, now seen corresponding path program 266 times [2022-03-01 16:29:49,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:49,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43966229] [2022-03-01 16:29:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:50,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:50,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43966229] [2022-03-01 16:29:50,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43966229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:50,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:50,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:50,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045384619] [2022-03-01 16:29:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:50,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:50,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:50,180 INFO L87 Difference]: Start difference. First operand 1023 states and 2529 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:51,101 INFO L93 Difference]: Finished difference Result 1292 states and 3158 transitions. [2022-03-01 16:29:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:29:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:51,102 INFO L225 Difference]: With dead ends: 1292 [2022-03-01 16:29:51,102 INFO L226 Difference]: Without dead ends: 1031 [2022-03-01 16:29:51,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:29:51,103 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 301 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:51,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2741 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-03-01 16:29:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1015. [2022-03-01 16:29:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 2.472386587771203) internal successors, (2507), 1014 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2507 transitions. [2022-03-01 16:29:51,113 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2507 transitions. Word has length 79 [2022-03-01 16:29:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:51,113 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2507 transitions. [2022-03-01 16:29:51,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2507 transitions. [2022-03-01 16:29:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:51,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:51,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:51,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-01 16:29:51,114 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash -264299060, now seen corresponding path program 267 times [2022-03-01 16:29:51,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:51,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186357401] [2022-03-01 16:29:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:51,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:51,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186357401] [2022-03-01 16:29:51,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186357401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:51,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:51,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:29:51,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330085831] [2022-03-01 16:29:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:51,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:29:51,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:29:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:29:51,388 INFO L87 Difference]: Start difference. First operand 1015 states and 2507 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:52,154 INFO L93 Difference]: Finished difference Result 1287 states and 3138 transitions. [2022-03-01 16:29:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:29:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:52,156 INFO L225 Difference]: With dead ends: 1287 [2022-03-01 16:29:52,156 INFO L226 Difference]: Without dead ends: 971 [2022-03-01 16:29:52,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=1566, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:52,156 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 296 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:52,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2611 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:29:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-03-01 16:29:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-03-01 16:29:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 2.4938144329896907) internal successors, (2419), 970 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2419 transitions. [2022-03-01 16:29:52,165 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2419 transitions. Word has length 79 [2022-03-01 16:29:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:52,166 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2419 transitions. [2022-03-01 16:29:52,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2419 transitions. [2022-03-01 16:29:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:52,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:52,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:52,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-01 16:29:52,167 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1441860872, now seen corresponding path program 268 times [2022-03-01 16:29:52,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:52,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709471695] [2022-03-01 16:29:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:52,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:52,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709471695] [2022-03-01 16:29:52,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709471695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:52,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:52,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:29:52,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737785314] [2022-03-01 16:29:52,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:52,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:29:52,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:52,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:29:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:29:52,447 INFO L87 Difference]: Start difference. First operand 971 states and 2419 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:54,333 INFO L93 Difference]: Finished difference Result 1381 states and 3476 transitions. [2022-03-01 16:29:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:29:54,334 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:54,335 INFO L225 Difference]: With dead ends: 1381 [2022-03-01 16:29:54,335 INFO L226 Difference]: Without dead ends: 1251 [2022-03-01 16:29:54,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:29:54,336 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 350 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:54,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2749 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:29:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-01 16:29:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1087. [2022-03-01 16:29:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5138121546961325) internal successors, (2730), 1086 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2730 transitions. [2022-03-01 16:29:54,346 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2730 transitions. Word has length 79 [2022-03-01 16:29:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:54,347 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2730 transitions. [2022-03-01 16:29:54,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2730 transitions. [2022-03-01 16:29:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:54,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:54,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:54,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-01 16:29:54,348 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 588469706, now seen corresponding path program 269 times [2022-03-01 16:29:54,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:54,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712065119] [2022-03-01 16:29:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:54,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:54,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712065119] [2022-03-01 16:29:54,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712065119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:54,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:54,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:29:54,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426324659] [2022-03-01 16:29:54,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:54,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:29:54,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:29:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:29:54,725 INFO L87 Difference]: Start difference. First operand 1087 states and 2730 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:57,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:29:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:59,101 INFO L93 Difference]: Finished difference Result 1392 states and 3496 transitions. [2022-03-01 16:29:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:29:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:29:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:59,103 INFO L225 Difference]: With dead ends: 1392 [2022-03-01 16:29:59,103 INFO L226 Difference]: Without dead ends: 1294 [2022-03-01 16:29:59,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=306, Invalid=3600, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:29:59,104 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 340 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:59,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 3266 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1314 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-01 16:29:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-01 16:29:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1091. [2022-03-01 16:29:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5110091743119267) internal successors, (2737), 1090 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2737 transitions. [2022-03-01 16:29:59,115 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2737 transitions. Word has length 79 [2022-03-01 16:29:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:59,115 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2737 transitions. [2022-03-01 16:29:59,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2737 transitions. [2022-03-01 16:29:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:29:59,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:59,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:59,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-01 16:29:59,116 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1302706984, now seen corresponding path program 270 times [2022-03-01 16:29:59,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:59,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169398411] [2022-03-01 16:29:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:59,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:59,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169398411] [2022-03-01 16:29:59,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169398411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:29:59,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:29:59,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:29:59,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009311058] [2022-03-01 16:29:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:29:59,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:29:59,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:29:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:29:59,505 INFO L87 Difference]: Start difference. First operand 1091 states and 2737 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:03,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:05,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:06,801 INFO L93 Difference]: Finished difference Result 1467 states and 3688 transitions. [2022-03-01 16:30:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:30:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:06,803 INFO L225 Difference]: With dead ends: 1467 [2022-03-01 16:30:06,803 INFO L226 Difference]: Without dead ends: 1354 [2022-03-01 16:30:06,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=343, Invalid=4213, Unknown=0, NotChecked=0, Total=4556 [2022-03-01 16:30:06,804 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 442 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 62 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:06,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2923 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1192 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-03-01 16:30:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-03-01 16:30:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1159. [2022-03-01 16:30:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5146804835924006) internal successors, (2912), 1158 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2912 transitions. [2022-03-01 16:30:06,816 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2912 transitions. Word has length 79 [2022-03-01 16:30:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:06,816 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2912 transitions. [2022-03-01 16:30:06,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2912 transitions. [2022-03-01 16:30:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:06,817 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:06,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:06,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-01 16:30:06,817 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1628155210, now seen corresponding path program 271 times [2022-03-01 16:30:06,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:06,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095289980] [2022-03-01 16:30:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:07,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:07,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095289980] [2022-03-01 16:30:07,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095289980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:07,211 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:07,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:07,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682319777] [2022-03-01 16:30:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:07,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:07,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:07,212 INFO L87 Difference]: Start difference. First operand 1159 states and 2912 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:09,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:11,350 INFO L93 Difference]: Finished difference Result 1433 states and 3595 transitions. [2022-03-01 16:30:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:11,352 INFO L225 Difference]: With dead ends: 1433 [2022-03-01 16:30:11,353 INFO L226 Difference]: Without dead ends: 1283 [2022-03-01 16:30:11,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:30:11,353 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 363 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:11,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2819 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-03-01 16:30:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-03-01 16:30:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1155. [2022-03-01 16:30:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5103986135181975) internal successors, (2897), 1154 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2897 transitions. [2022-03-01 16:30:11,365 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2897 transitions. Word has length 79 [2022-03-01 16:30:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:11,365 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2897 transitions. [2022-03-01 16:30:11,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2897 transitions. [2022-03-01 16:30:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:11,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:11,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:11,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-03-01 16:30:11,366 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1805229752, now seen corresponding path program 272 times [2022-03-01 16:30:11,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:11,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371164461] [2022-03-01 16:30:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:11,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:11,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371164461] [2022-03-01 16:30:11,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371164461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:11,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:11,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:11,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034507708] [2022-03-01 16:30:11,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:11,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:11,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:11,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:11,732 INFO L87 Difference]: Start difference. First operand 1155 states and 2897 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:13,507 INFO L93 Difference]: Finished difference Result 1446 states and 3620 transitions. [2022-03-01 16:30:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:13,509 INFO L225 Difference]: With dead ends: 1446 [2022-03-01 16:30:13,509 INFO L226 Difference]: Without dead ends: 1348 [2022-03-01 16:30:13,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:30:13,510 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 322 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:13,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2796 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:30:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-03-01 16:30:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1179. [2022-03-01 16:30:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.5084889643463497) internal successors, (2955), 1178 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2955 transitions. [2022-03-01 16:30:13,521 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2955 transitions. Word has length 79 [2022-03-01 16:30:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:13,521 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2955 transitions. [2022-03-01 16:30:13,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2955 transitions. [2022-03-01 16:30:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:13,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:13,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:13,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-01 16:30:13,522 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -488696860, now seen corresponding path program 273 times [2022-03-01 16:30:13,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:13,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220718912] [2022-03-01 16:30:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:13,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:13,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220718912] [2022-03-01 16:30:13,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220718912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:13,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:13,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:13,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747461323] [2022-03-01 16:30:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:13,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:13,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:13,875 INFO L87 Difference]: Start difference. First operand 1179 states and 2955 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:16,019 INFO L93 Difference]: Finished difference Result 1429 states and 3567 transitions. [2022-03-01 16:30:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:30:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:16,021 INFO L225 Difference]: With dead ends: 1429 [2022-03-01 16:30:16,021 INFO L226 Difference]: Without dead ends: 1270 [2022-03-01 16:30:16,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:30:16,021 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 310 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:16,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 3009 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:30:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-03-01 16:30:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1131. [2022-03-01 16:30:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.5017699115044247) internal successors, (2827), 1130 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2827 transitions. [2022-03-01 16:30:16,048 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2827 transitions. Word has length 79 [2022-03-01 16:30:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:16,048 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2827 transitions. [2022-03-01 16:30:16,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2827 transitions. [2022-03-01 16:30:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:16,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:16,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:16,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-03-01 16:30:16,049 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2095320746, now seen corresponding path program 274 times [2022-03-01 16:30:16,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:16,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641910803] [2022-03-01 16:30:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:16,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:16,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641910803] [2022-03-01 16:30:16,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641910803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:16,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:16,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:16,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123385304] [2022-03-01 16:30:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:16,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:16,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:16,393 INFO L87 Difference]: Start difference. First operand 1131 states and 2827 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:17,926 INFO L93 Difference]: Finished difference Result 1425 states and 3565 transitions. [2022-03-01 16:30:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:30:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:17,928 INFO L225 Difference]: With dead ends: 1425 [2022-03-01 16:30:17,928 INFO L226 Difference]: Without dead ends: 1295 [2022-03-01 16:30:17,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=3254, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:30:17,929 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 318 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:17,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2665 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:30:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-03-01 16:30:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1151. [2022-03-01 16:30:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4991304347826087) internal successors, (2874), 1150 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-03-01 16:30:17,941 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-03-01 16:30:17,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:17,941 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-03-01 16:30:17,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-03-01 16:30:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:17,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:17,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:17,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-01 16:30:17,942 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:17,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1241929580, now seen corresponding path program 275 times [2022-03-01 16:30:17,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:17,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022827865] [2022-03-01 16:30:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:17,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:18,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:18,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022827865] [2022-03-01 16:30:18,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022827865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:18,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:18,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:18,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109617502] [2022-03-01 16:30:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:18,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:18,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:18,322 INFO L87 Difference]: Start difference. First operand 1151 states and 2874 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:20,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:21,439 INFO L93 Difference]: Finished difference Result 1416 states and 3534 transitions. [2022-03-01 16:30:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 16:30:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:21,441 INFO L225 Difference]: With dead ends: 1416 [2022-03-01 16:30:21,442 INFO L226 Difference]: Without dead ends: 1318 [2022-03-01 16:30:21,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=3721, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 16:30:21,442 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 392 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:21,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2807 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-01 16:30:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-03-01 16:30:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1143. [2022-03-01 16:30:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.5043782837127844) internal successors, (2860), 1142 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2860 transitions. [2022-03-01 16:30:21,453 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2860 transitions. Word has length 79 [2022-03-01 16:30:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:21,453 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2860 transitions. [2022-03-01 16:30:21,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2860 transitions. [2022-03-01 16:30:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:21,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:21,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:21,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-03-01 16:30:21,454 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1956166858, now seen corresponding path program 276 times [2022-03-01 16:30:21,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:21,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545859827] [2022-03-01 16:30:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:21,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:21,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545859827] [2022-03-01 16:30:21,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545859827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:21,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:21,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:21,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924898849] [2022-03-01 16:30:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:21,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:21,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:21,826 INFO L87 Difference]: Start difference. First operand 1143 states and 2860 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:23,456 INFO L93 Difference]: Finished difference Result 1399 states and 3485 transitions. [2022-03-01 16:30:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:30:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:23,458 INFO L225 Difference]: With dead ends: 1399 [2022-03-01 16:30:23,458 INFO L226 Difference]: Without dead ends: 1286 [2022-03-01 16:30:23,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:30:23,458 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 399 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:23,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 2726 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:30:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-03-01 16:30:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1143. [2022-03-01 16:30:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.500875656742557) internal successors, (2856), 1142 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2856 transitions. [2022-03-01 16:30:23,469 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2856 transitions. Word has length 79 [2022-03-01 16:30:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:23,469 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2856 transitions. [2022-03-01 16:30:23,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2856 transitions. [2022-03-01 16:30:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:23,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:23,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:23,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-03-01 16:30:23,470 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2013352212, now seen corresponding path program 277 times [2022-03-01 16:30:23,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:23,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836763649] [2022-03-01 16:30:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:23,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:23,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836763649] [2022-03-01 16:30:23,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836763649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:23,806 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:23,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:23,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633023878] [2022-03-01 16:30:23,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:23,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:23,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:23,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:23,807 INFO L87 Difference]: Start difference. First operand 1143 states and 2856 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:26,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:26,926 INFO L93 Difference]: Finished difference Result 1405 states and 3506 transitions. [2022-03-01 16:30:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:26,928 INFO L225 Difference]: With dead ends: 1405 [2022-03-01 16:30:26,928 INFO L226 Difference]: Without dead ends: 1255 [2022-03-01 16:30:26,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:30:26,929 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 350 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:26,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2571 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-01 16:30:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-01 16:30:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1139. [2022-03-01 16:30:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5) internal successors, (2845), 1138 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2845 transitions. [2022-03-01 16:30:26,939 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2845 transitions. Word has length 79 [2022-03-01 16:30:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:26,939 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2845 transitions. [2022-03-01 16:30:26,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2845 transitions. [2022-03-01 16:30:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:26,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:26,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:26,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-03-01 16:30:26,940 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:26,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1575034120, now seen corresponding path program 278 times [2022-03-01 16:30:26,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:26,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057473872] [2022-03-01 16:30:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:27,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:27,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057473872] [2022-03-01 16:30:27,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057473872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:27,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:27,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:27,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079901372] [2022-03-01 16:30:27,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:27,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:27,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:27,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:27,289 INFO L87 Difference]: Start difference. First operand 1139 states and 2845 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:29,211 INFO L93 Difference]: Finished difference Result 1437 states and 3582 transitions. [2022-03-01 16:30:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:30:29,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:29,213 INFO L225 Difference]: With dead ends: 1437 [2022-03-01 16:30:29,213 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:30:29,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:30:29,214 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 315 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:29,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 3027 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:30:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:30:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1115. [2022-03-01 16:30:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4910233393177736) internal successors, (2775), 1114 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2775 transitions. [2022-03-01 16:30:29,224 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2775 transitions. Word has length 79 [2022-03-01 16:30:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:29,224 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2775 transitions. [2022-03-01 16:30:29,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2775 transitions. [2022-03-01 16:30:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:29,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:29,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:29,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-03-01 16:30:29,226 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -982497334, now seen corresponding path program 279 times [2022-03-01 16:30:29,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:29,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792905595] [2022-03-01 16:30:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:29,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:29,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792905595] [2022-03-01 16:30:29,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792905595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:29,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:29,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:29,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443806397] [2022-03-01 16:30:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:29,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:29,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:29,601 INFO L87 Difference]: Start difference. First operand 1115 states and 2775 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:31,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:33,652 INFO L93 Difference]: Finished difference Result 1457 states and 3645 transitions. [2022-03-01 16:30:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:30:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:33,653 INFO L225 Difference]: With dead ends: 1457 [2022-03-01 16:30:33,654 INFO L226 Difference]: Without dead ends: 1327 [2022-03-01 16:30:33,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=340, Invalid=4216, Unknown=0, NotChecked=0, Total=4556 [2022-03-01 16:30:33,654 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 379 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:33,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 3055 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-01 16:30:33,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-03-01 16:30:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1155. [2022-03-01 16:30:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.4930675909878683) internal successors, (2877), 1154 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2877 transitions. [2022-03-01 16:30:33,665 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2877 transitions. Word has length 79 [2022-03-01 16:30:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:33,665 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2877 transitions. [2022-03-01 16:30:33,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2877 transitions. [2022-03-01 16:30:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:33,666 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:33,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:33,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-03-01 16:30:33,667 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:33,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1835888500, now seen corresponding path program 280 times [2022-03-01 16:30:33,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:33,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83909874] [2022-03-01 16:30:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:34,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:34,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83909874] [2022-03-01 16:30:34,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83909874] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:34,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:34,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:34,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029412235] [2022-03-01 16:30:34,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:34,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:34,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:34,031 INFO L87 Difference]: Start difference. First operand 1155 states and 2877 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:35,872 INFO L93 Difference]: Finished difference Result 1448 states and 3614 transitions. [2022-03-01 16:30:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 16:30:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:35,874 INFO L225 Difference]: With dead ends: 1448 [2022-03-01 16:30:35,874 INFO L226 Difference]: Without dead ends: 1350 [2022-03-01 16:30:35,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:30:35,875 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 299 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:35,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 3207 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:30:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-03-01 16:30:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1147. [2022-03-01 16:30:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4982547993019195) internal successors, (2863), 1146 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2863 transitions. [2022-03-01 16:30:35,885 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2863 transitions. Word has length 79 [2022-03-01 16:30:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:35,885 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2863 transitions. [2022-03-01 16:30:35,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2863 transitions. [2022-03-01 16:30:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:35,887 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:35,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:35,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-01 16:30:35,887 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1121651222, now seen corresponding path program 281 times [2022-03-01 16:30:35,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:35,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537085019] [2022-03-01 16:30:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:36,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:36,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537085019] [2022-03-01 16:30:36,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537085019] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:36,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:36,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:36,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955600957] [2022-03-01 16:30:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:36,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:36,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:36,249 INFO L87 Difference]: Start difference. First operand 1147 states and 2863 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:38,094 INFO L93 Difference]: Finished difference Result 1431 states and 3565 transitions. [2022-03-01 16:30:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:30:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:38,096 INFO L225 Difference]: With dead ends: 1431 [2022-03-01 16:30:38,096 INFO L226 Difference]: Without dead ends: 1318 [2022-03-01 16:30:38,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:30:38,097 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 328 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:38,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3232 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:30:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-03-01 16:30:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1147. [2022-03-01 16:30:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.487783595113438) internal successors, (2851), 1146 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2851 transitions. [2022-03-01 16:30:38,108 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2851 transitions. Word has length 79 [2022-03-01 16:30:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:38,108 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2851 transitions. [2022-03-01 16:30:38,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2851 transitions. [2022-03-01 16:30:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:38,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:38,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:38,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-03-01 16:30:38,109 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -796202996, now seen corresponding path program 282 times [2022-03-01 16:30:38,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:38,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570670904] [2022-03-01 16:30:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:38,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:38,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570670904] [2022-03-01 16:30:38,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570670904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:38,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:38,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:30:38,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126767904] [2022-03-01 16:30:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:38,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:30:38,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:30:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:30:38,648 INFO L87 Difference]: Start difference. First operand 1147 states and 2851 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:40,453 INFO L93 Difference]: Finished difference Result 1445 states and 3596 transitions. [2022-03-01 16:30:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:30:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:40,455 INFO L225 Difference]: With dead ends: 1445 [2022-03-01 16:30:40,455 INFO L226 Difference]: Without dead ends: 1295 [2022-03-01 16:30:40,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=323, Invalid=3967, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 16:30:40,455 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 363 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:40,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 3017 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:30:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-03-01 16:30:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1143. [2022-03-01 16:30:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4868651488616464) internal successors, (2840), 1142 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2840 transitions. [2022-03-01 16:30:40,466 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2840 transitions. Word has length 79 [2022-03-01 16:30:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2840 transitions. [2022-03-01 16:30:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2840 transitions. [2022-03-01 16:30:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:40,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:40,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:40,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-03-01 16:30:40,468 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 65379338, now seen corresponding path program 283 times [2022-03-01 16:30:40,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:40,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508093802] [2022-03-01 16:30:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:40,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:40,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:40,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508093802] [2022-03-01 16:30:40,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508093802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:40,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:40,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:40,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677748911] [2022-03-01 16:30:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:40,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:40,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:40,769 INFO L87 Difference]: Start difference. First operand 1143 states and 2840 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:42,784 INFO L93 Difference]: Finished difference Result 1426 states and 3541 transitions. [2022-03-01 16:30:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:42,786 INFO L225 Difference]: With dead ends: 1426 [2022-03-01 16:30:42,786 INFO L226 Difference]: Without dead ends: 1328 [2022-03-01 16:30:42,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:30:42,787 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 336 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:42,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2885 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:30:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-03-01 16:30:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1167. [2022-03-01 16:30:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.485420240137221) internal successors, (2898), 1166 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2898 transitions. [2022-03-01 16:30:42,798 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2898 transitions. Word has length 79 [2022-03-01 16:30:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:42,798 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2898 transitions. [2022-03-01 16:30:42,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2898 transitions. [2022-03-01 16:30:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:42,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:42,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:42,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-03-01 16:30:42,800 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1381912230, now seen corresponding path program 284 times [2022-03-01 16:30:42,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:42,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535597513] [2022-03-01 16:30:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:43,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:43,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535597513] [2022-03-01 16:30:43,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535597513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:43,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:43,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:43,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673572910] [2022-03-01 16:30:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:43,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:43,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:43,124 INFO L87 Difference]: Start difference. First operand 1167 states and 2898 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:45,119 INFO L93 Difference]: Finished difference Result 1394 states and 3453 transitions. [2022-03-01 16:30:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:30:45,119 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:45,120 INFO L225 Difference]: With dead ends: 1394 [2022-03-01 16:30:45,120 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:30:45,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:30:45,121 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 334 mSDsluCounter, 2901 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:45,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2958 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:30:45,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:30:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1119. [2022-03-01 16:30:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.488372093023256) internal successors, (2782), 1118 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2782 transitions. [2022-03-01 16:30:45,131 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2782 transitions. Word has length 79 [2022-03-01 16:30:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:45,131 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2782 transitions. [2022-03-01 16:30:45,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2782 transitions. [2022-03-01 16:30:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:45,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:45,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:45,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-03-01 16:30:45,133 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1579397944, now seen corresponding path program 285 times [2022-03-01 16:30:45,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:45,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899283989] [2022-03-01 16:30:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:45,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:45,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899283989] [2022-03-01 16:30:45,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899283989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:45,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:45,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:45,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097433509] [2022-03-01 16:30:45,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:45,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:45,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:45,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:45,408 INFO L87 Difference]: Start difference. First operand 1119 states and 2782 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:47,406 INFO L93 Difference]: Finished difference Result 1441 states and 3581 transitions. [2022-03-01 16:30:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:30:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:47,408 INFO L225 Difference]: With dead ends: 1441 [2022-03-01 16:30:47,408 INFO L226 Difference]: Without dead ends: 1311 [2022-03-01 16:30:47,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=3479, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:30:47,408 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 351 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:47,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2849 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:30:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-03-01 16:30:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1151. [2022-03-01 16:30:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.488695652173913) internal successors, (2862), 1150 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2862 transitions. [2022-03-01 16:30:47,419 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2862 transitions. Word has length 79 [2022-03-01 16:30:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:47,419 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2862 transitions. [2022-03-01 16:30:47,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2862 transitions. [2022-03-01 16:30:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:47,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:47,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:47,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-03-01 16:30:47,420 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1862178186, now seen corresponding path program 286 times [2022-03-01 16:30:47,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:47,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806724031] [2022-03-01 16:30:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:47,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:47,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806724031] [2022-03-01 16:30:47,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806724031] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:47,776 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:47,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:47,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126177231] [2022-03-01 16:30:47,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:47,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:47,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:47,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:47,777 INFO L87 Difference]: Start difference. First operand 1151 states and 2862 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:49,317 INFO L93 Difference]: Finished difference Result 1408 states and 3500 transitions. [2022-03-01 16:30:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:49,319 INFO L225 Difference]: With dead ends: 1408 [2022-03-01 16:30:49,319 INFO L226 Difference]: Without dead ends: 1310 [2022-03-01 16:30:49,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:30:49,320 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 321 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:49,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2668 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:30:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-03-01 16:30:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2022-03-01 16:30:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4938704028021017) internal successors, (2848), 1142 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2848 transitions. [2022-03-01 16:30:49,331 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2848 transitions. Word has length 79 [2022-03-01 16:30:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:49,331 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2848 transitions. [2022-03-01 16:30:49,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2848 transitions. [2022-03-01 16:30:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:49,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:49,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:49,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-03-01 16:30:49,332 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1718551832, now seen corresponding path program 287 times [2022-03-01 16:30:49,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:49,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500575774] [2022-03-01 16:30:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:49,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:49,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500575774] [2022-03-01 16:30:49,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500575774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:49,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:49,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:49,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220906956] [2022-03-01 16:30:49,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:49,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:49,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:49,706 INFO L87 Difference]: Start difference. First operand 1143 states and 2848 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:51,131 INFO L93 Difference]: Finished difference Result 1376 states and 3416 transitions. [2022-03-01 16:30:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:30:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:51,133 INFO L225 Difference]: With dead ends: 1376 [2022-03-01 16:30:51,133 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:30:51,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=2912, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:30:51,133 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 307 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:51,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2800 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:30:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:30:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1143. [2022-03-01 16:30:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4868651488616464) internal successors, (2840), 1142 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2840 transitions. [2022-03-01 16:30:51,144 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2840 transitions. Word has length 79 [2022-03-01 16:30:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:51,144 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2840 transitions. [2022-03-01 16:30:51,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2840 transitions. [2022-03-01 16:30:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:51,145 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:51,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:51,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-03-01 16:30:51,145 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1159593240, now seen corresponding path program 288 times [2022-03-01 16:30:51,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:51,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609030916] [2022-03-01 16:30:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:51,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:51,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609030916] [2022-03-01 16:30:51,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609030916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:51,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:51,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:51,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168458516] [2022-03-01 16:30:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:51,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:51,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:51,493 INFO L87 Difference]: Start difference. First operand 1143 states and 2840 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:53,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:30:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:55,903 INFO L93 Difference]: Finished difference Result 1426 states and 3541 transitions. [2022-03-01 16:30:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:30:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:30:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:55,905 INFO L225 Difference]: With dead ends: 1426 [2022-03-01 16:30:55,905 INFO L226 Difference]: Without dead ends: 1328 [2022-03-01 16:30:55,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:30:55,906 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 353 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:55,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2717 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-01 16:30:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-03-01 16:30:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1167. [2022-03-01 16:30:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.485420240137221) internal successors, (2898), 1166 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2898 transitions. [2022-03-01 16:30:55,917 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2898 transitions. Word has length 79 [2022-03-01 16:30:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:55,917 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2898 transitions. [2022-03-01 16:30:55,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2898 transitions. [2022-03-01 16:30:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:30:55,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:55,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:55,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-03-01 16:30:55,918 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 156939652, now seen corresponding path program 289 times [2022-03-01 16:30:55,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:55,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986511535] [2022-03-01 16:30:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:55,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:56,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:56,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986511535] [2022-03-01 16:30:56,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986511535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:30:56,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:30:56,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:30:56,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939766668] [2022-03-01 16:30:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:30:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:30:56,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:30:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:30:56,197 INFO L87 Difference]: Start difference. First operand 1167 states and 2898 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:59,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:00,465 INFO L93 Difference]: Finished difference Result 1394 states and 3453 transitions. [2022-03-01 16:31:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:31:00,466 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:00,467 INFO L225 Difference]: With dead ends: 1394 [2022-03-01 16:31:00,467 INFO L226 Difference]: Without dead ends: 1243 [2022-03-01 16:31:00,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:31:00,468 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 325 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:00,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2682 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-03-01 16:31:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-01 16:31:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1127. [2022-03-01 16:31:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.483126110124334) internal successors, (2796), 1126 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2796 transitions. [2022-03-01 16:31:00,478 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2796 transitions. Word has length 79 [2022-03-01 16:31:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:00,478 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2796 transitions. [2022-03-01 16:31:00,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2796 transitions. [2022-03-01 16:31:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:00,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:00,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:00,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-03-01 16:31:00,480 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1011030760, now seen corresponding path program 290 times [2022-03-01 16:31:00,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:00,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305207048] [2022-03-01 16:31:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:00,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:00,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305207048] [2022-03-01 16:31:00,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305207048] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:00,850 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:00,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:00,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764702992] [2022-03-01 16:31:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:00,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:00,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:00,851 INFO L87 Difference]: Start difference. First operand 1127 states and 2796 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:03,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:05,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:05,984 INFO L93 Difference]: Finished difference Result 1514 states and 3729 transitions. [2022-03-01 16:31:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:31:05,985 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:05,986 INFO L225 Difference]: With dead ends: 1514 [2022-03-01 16:31:05,986 INFO L226 Difference]: Without dead ends: 1416 [2022-03-01 16:31:05,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=328, Invalid=3832, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 16:31:05,987 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 397 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:05,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3010 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1145 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-03-01 16:31:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-03-01 16:31:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1139. [2022-03-01 16:31:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4859402460456943) internal successors, (2829), 1138 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2829 transitions. [2022-03-01 16:31:05,997 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2829 transitions. Word has length 79 [2022-03-01 16:31:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:05,997 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2829 transitions. [2022-03-01 16:31:05,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2829 transitions. [2022-03-01 16:31:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:05,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:05,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:05,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-03-01 16:31:05,999 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1725268038, now seen corresponding path program 291 times [2022-03-01 16:31:05,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:05,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848747181] [2022-03-01 16:31:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:05,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:06,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:06,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848747181] [2022-03-01 16:31:06,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848747181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:06,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:06,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:06,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603190889] [2022-03-01 16:31:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:06,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:06,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:06,305 INFO L87 Difference]: Start difference. First operand 1139 states and 2829 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:07,985 INFO L93 Difference]: Finished difference Result 1406 states and 3486 transitions. [2022-03-01 16:31:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:31:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:07,987 INFO L225 Difference]: With dead ends: 1406 [2022-03-01 16:31:07,987 INFO L226 Difference]: Without dead ends: 1255 [2022-03-01 16:31:07,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=3595, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:31:07,987 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 322 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:07,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 3198 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:31:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-01 16:31:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1131. [2022-03-01 16:31:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4805309734513274) internal successors, (2803), 1130 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2803 transitions. [2022-03-01 16:31:07,997 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2803 transitions. Word has length 79 [2022-03-01 16:31:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:07,997 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2803 transitions. [2022-03-01 16:31:07,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2803 transitions. [2022-03-01 16:31:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:07,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:07,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:07,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-03-01 16:31:07,999 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1197048622, now seen corresponding path program 292 times [2022-03-01 16:31:07,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:07,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080673986] [2022-03-01 16:31:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:07,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:08,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:08,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080673986] [2022-03-01 16:31:08,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080673986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:08,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:08,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:08,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421803392] [2022-03-01 16:31:08,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:08,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:08,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:08,362 INFO L87 Difference]: Start difference. First operand 1131 states and 2803 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:11,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:11,833 INFO L93 Difference]: Finished difference Result 1436 states and 3540 transitions. [2022-03-01 16:31:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:31:11,833 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:11,835 INFO L225 Difference]: With dead ends: 1436 [2022-03-01 16:31:11,835 INFO L226 Difference]: Without dead ends: 1254 [2022-03-01 16:31:11,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=281, Invalid=3141, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:31:11,835 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 350 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:11,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2704 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:31:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-01 16:31:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1123. [2022-03-01 16:31:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4750445632798574) internal successors, (2777), 1122 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2777 transitions. [2022-03-01 16:31:11,845 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2777 transitions. Word has length 79 [2022-03-01 16:31:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:11,846 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2777 transitions. [2022-03-01 16:31:11,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2777 transitions. [2022-03-01 16:31:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:11,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:11,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:11,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-03-01 16:31:11,847 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash -38797690, now seen corresponding path program 293 times [2022-03-01 16:31:11,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:11,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471419765] [2022-03-01 16:31:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:12,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:12,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471419765] [2022-03-01 16:31:12,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471419765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:12,188 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:12,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:12,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948832555] [2022-03-01 16:31:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:12,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:12,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:12,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:12,188 INFO L87 Difference]: Start difference. First operand 1123 states and 2777 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:13,989 INFO L93 Difference]: Finished difference Result 1509 states and 3740 transitions. [2022-03-01 16:31:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:31:13,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:13,991 INFO L225 Difference]: With dead ends: 1509 [2022-03-01 16:31:13,991 INFO L226 Difference]: Without dead ends: 1379 [2022-03-01 16:31:13,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:31:13,992 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 363 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:13,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2786 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:31:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-03-01 16:31:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1183. [2022-03-01 16:31:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.482233502538071) internal successors, (2934), 1182 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2934 transitions. [2022-03-01 16:31:14,003 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2934 transitions. Word has length 79 [2022-03-01 16:31:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:14,003 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2934 transitions. [2022-03-01 16:31:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2934 transitions. [2022-03-01 16:31:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:14,004 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:14,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:14,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-03-01 16:31:14,004 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash -892188856, now seen corresponding path program 294 times [2022-03-01 16:31:14,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:14,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87066981] [2022-03-01 16:31:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:14,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:14,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87066981] [2022-03-01 16:31:14,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87066981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:14,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:14,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:14,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880413608] [2022-03-01 16:31:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:14,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:14,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:14,364 INFO L87 Difference]: Start difference. First operand 1183 states and 2934 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:16,360 INFO L93 Difference]: Finished difference Result 1520 states and 3760 transitions. [2022-03-01 16:31:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:31:16,360 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:16,362 INFO L225 Difference]: With dead ends: 1520 [2022-03-01 16:31:16,362 INFO L226 Difference]: Without dead ends: 1422 [2022-03-01 16:31:16,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=3722, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 16:31:16,362 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 364 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:16,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2931 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:31:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-03-01 16:31:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1175. [2022-03-01 16:31:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.487223168654174) internal successors, (2920), 1174 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2920 transitions. [2022-03-01 16:31:16,373 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2920 transitions. Word has length 79 [2022-03-01 16:31:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:16,373 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2920 transitions. [2022-03-01 16:31:16,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2920 transitions. [2022-03-01 16:31:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:16,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:16,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:16,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-03-01 16:31:16,375 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash -177951578, now seen corresponding path program 295 times [2022-03-01 16:31:16,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:16,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969073712] [2022-03-01 16:31:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:16,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:16,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969073712] [2022-03-01 16:31:16,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969073712] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:16,842 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:16,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:16,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085190953] [2022-03-01 16:31:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:16,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:16,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:16,843 INFO L87 Difference]: Start difference. First operand 1175 states and 2920 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:18,607 INFO L93 Difference]: Finished difference Result 1491 states and 3690 transitions. [2022-03-01 16:31:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:31:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:18,609 INFO L225 Difference]: With dead ends: 1491 [2022-03-01 16:31:18,609 INFO L226 Difference]: Without dead ends: 1334 [2022-03-01 16:31:18,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=303, Invalid=3603, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:31:18,610 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 346 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:18,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 3194 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:31:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2022-03-01 16:31:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1167. [2022-03-01 16:31:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.4751286449399656) internal successors, (2886), 1166 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2886 transitions. [2022-03-01 16:31:18,622 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2886 transitions. Word has length 79 [2022-03-01 16:31:18,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:18,622 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2886 transitions. [2022-03-01 16:31:18,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2886 transitions. [2022-03-01 16:31:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:18,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:18,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-03-01 16:31:18,623 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 147496648, now seen corresponding path program 296 times [2022-03-01 16:31:18,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:18,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670007841] [2022-03-01 16:31:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:18,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:18,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670007841] [2022-03-01 16:31:18,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670007841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:18,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:18,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:18,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302108794] [2022-03-01 16:31:18,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:18,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:18,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:18,915 INFO L87 Difference]: Start difference. First operand 1167 states and 2886 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:20,156 INFO L93 Difference]: Finished difference Result 1425 states and 3525 transitions. [2022-03-01 16:31:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:31:20,157 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:20,158 INFO L225 Difference]: With dead ends: 1425 [2022-03-01 16:31:20,158 INFO L226 Difference]: Without dead ends: 1275 [2022-03-01 16:31:20,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:31:20,159 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 285 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:20,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 3040 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:31:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-01 16:31:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1163. [2022-03-01 16:31:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.474182444061962) internal successors, (2875), 1162 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2875 transitions. [2022-03-01 16:31:20,169 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2875 transitions. Word has length 79 [2022-03-01 16:31:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:20,169 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2875 transitions. [2022-03-01 16:31:20,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2875 transitions. [2022-03-01 16:31:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:20,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:20,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:20,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-03-01 16:31:20,170 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1009078982, now seen corresponding path program 297 times [2022-03-01 16:31:20,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:20,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213965188] [2022-03-01 16:31:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:20,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:20,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213965188] [2022-03-01 16:31:20,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213965188] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:20,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:20,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:20,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182418523] [2022-03-01 16:31:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:20,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:20,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:20,482 INFO L87 Difference]: Start difference. First operand 1163 states and 2875 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:22,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:24,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:24,505 INFO L93 Difference]: Finished difference Result 1438 states and 3554 transitions. [2022-03-01 16:31:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:31:24,506 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:24,508 INFO L225 Difference]: With dead ends: 1438 [2022-03-01 16:31:24,508 INFO L226 Difference]: Without dead ends: 1340 [2022-03-01 16:31:24,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:31:24,508 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 330 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:24,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2727 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-01 16:31:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-03-01 16:31:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1187. [2022-03-01 16:31:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.473018549747049) internal successors, (2933), 1186 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2933 transitions. [2022-03-01 16:31:24,520 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2933 transitions. Word has length 79 [2022-03-01 16:31:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:24,520 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2933 transitions. [2022-03-01 16:31:24,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2933 transitions. [2022-03-01 16:31:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:24,521 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:24,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:24,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-03-01 16:31:24,521 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1969355422, now seen corresponding path program 298 times [2022-03-01 16:31:24,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:24,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745871583] [2022-03-01 16:31:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:24,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:24,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745871583] [2022-03-01 16:31:24,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745871583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:24,879 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:24,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:24,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894304925] [2022-03-01 16:31:24,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:24,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:24,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:24,880 INFO L87 Difference]: Start difference. First operand 1187 states and 2933 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:26,287 INFO L93 Difference]: Finished difference Result 1421 states and 3501 transitions. [2022-03-01 16:31:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:31:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:26,289 INFO L225 Difference]: With dead ends: 1421 [2022-03-01 16:31:26,289 INFO L226 Difference]: Without dead ends: 1262 [2022-03-01 16:31:26,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:31:26,289 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 291 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:26,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2804 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-01 16:31:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1139. [2022-03-01 16:31:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4718804920913886) internal successors, (2813), 1138 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2813 transitions. [2022-03-01 16:31:26,308 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2813 transitions. Word has length 79 [2022-03-01 16:31:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:26,308 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2813 transitions. [2022-03-01 16:31:26,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2813 transitions. [2022-03-01 16:31:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:26,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:26,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:26,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-03-01 16:31:26,309 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 614662184, now seen corresponding path program 299 times [2022-03-01 16:31:26,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:26,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673213461] [2022-03-01 16:31:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:26,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:26,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673213461] [2022-03-01 16:31:26,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673213461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:26,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:26,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:26,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558395501] [2022-03-01 16:31:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:26,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:26,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:26,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:26,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:26,645 INFO L87 Difference]: Start difference. First operand 1139 states and 2813 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:28,258 INFO L93 Difference]: Finished difference Result 1425 states and 3529 transitions. [2022-03-01 16:31:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:31:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:28,260 INFO L225 Difference]: With dead ends: 1425 [2022-03-01 16:31:28,260 INFO L226 Difference]: Without dead ends: 1295 [2022-03-01 16:31:28,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=283, Invalid=3257, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:31:28,261 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 360 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:28,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2590 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:31:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-03-01 16:31:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1159. [2022-03-01 16:31:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.469775474956822) internal successors, (2860), 1158 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2860 transitions. [2022-03-01 16:31:28,272 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2860 transitions. Word has length 79 [2022-03-01 16:31:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:28,272 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2860 transitions. [2022-03-01 16:31:28,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2860 transitions. [2022-03-01 16:31:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:28,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:28,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:28,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-03-01 16:31:28,273 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash -238728982, now seen corresponding path program 300 times [2022-03-01 16:31:28,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:28,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880666451] [2022-03-01 16:31:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:28,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:28,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880666451] [2022-03-01 16:31:28,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880666451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:28,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:28,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:28,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729194283] [2022-03-01 16:31:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:28,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:28,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:28,647 INFO L87 Difference]: Start difference. First operand 1159 states and 2860 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:30,285 INFO L93 Difference]: Finished difference Result 1416 states and 3498 transitions. [2022-03-01 16:31:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:31:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:30,287 INFO L225 Difference]: With dead ends: 1416 [2022-03-01 16:31:30,287 INFO L226 Difference]: Without dead ends: 1318 [2022-03-01 16:31:30,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 16:31:30,288 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 359 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:30,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2961 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-03-01 16:31:30,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1151. [2022-03-01 16:31:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4747826086956524) internal successors, (2846), 1150 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2846 transitions. [2022-03-01 16:31:30,311 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2846 transitions. Word has length 79 [2022-03-01 16:31:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:30,311 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2846 transitions. [2022-03-01 16:31:30,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2846 transitions. [2022-03-01 16:31:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:30,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:30,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:30,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-03-01 16:31:30,313 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash 475508296, now seen corresponding path program 301 times [2022-03-01 16:31:30,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:30,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350079292] [2022-03-01 16:31:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:30,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:30,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350079292] [2022-03-01 16:31:30,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350079292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:30,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:30,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:30,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69980697] [2022-03-01 16:31:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:30,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:30,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:30,660 INFO L87 Difference]: Start difference. First operand 1151 states and 2846 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:32,290 INFO L93 Difference]: Finished difference Result 1399 states and 3449 transitions. [2022-03-01 16:31:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:31:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:32,292 INFO L225 Difference]: With dead ends: 1399 [2022-03-01 16:31:32,292 INFO L226 Difference]: Without dead ends: 1286 [2022-03-01 16:31:32,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=302, Invalid=3604, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:31:32,293 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 368 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:32,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2878 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:31:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-03-01 16:31:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1151. [2022-03-01 16:31:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.471304347826087) internal successors, (2842), 1150 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2842 transitions. [2022-03-01 16:31:32,303 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2842 transitions. Word has length 79 [2022-03-01 16:31:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:32,303 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2842 transitions. [2022-03-01 16:31:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2842 transitions. [2022-03-01 16:31:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:32,304 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:32,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:32,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-03-01 16:31:32,304 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 800956522, now seen corresponding path program 302 times [2022-03-01 16:31:32,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:32,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685840408] [2022-03-01 16:31:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:32,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:32,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685840408] [2022-03-01 16:31:32,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685840408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:32,716 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:32,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:32,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774340459] [2022-03-01 16:31:32,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:32,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:32,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:32,717 INFO L87 Difference]: Start difference. First operand 1151 states and 2842 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:34,046 INFO L93 Difference]: Finished difference Result 1405 states and 3470 transitions. [2022-03-01 16:31:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:31:34,046 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:34,048 INFO L225 Difference]: With dead ends: 1405 [2022-03-01 16:31:34,048 INFO L226 Difference]: Without dead ends: 1255 [2022-03-01 16:31:34,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:31:34,048 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 318 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:34,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2728 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-01 16:31:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1147. [2022-03-01 16:31:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4703315881326353) internal successors, (2831), 1146 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2831 transitions. [2022-03-01 16:31:34,059 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2831 transitions. Word has length 79 [2022-03-01 16:31:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:34,059 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2831 transitions. [2022-03-01 16:31:34,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2831 transitions. [2022-03-01 16:31:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:34,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:34,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:34,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-03-01 16:31:34,060 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash 94375558, now seen corresponding path program 303 times [2022-03-01 16:31:34,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:34,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138780136] [2022-03-01 16:31:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:34,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:34,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138780136] [2022-03-01 16:31:34,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138780136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:34,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:34,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:34,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774258411] [2022-03-01 16:31:34,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:34,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:34,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:34,340 INFO L87 Difference]: Start difference. First operand 1147 states and 2831 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:35,749 INFO L93 Difference]: Finished difference Result 1417 states and 3495 transitions. [2022-03-01 16:31:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:31:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:35,751 INFO L225 Difference]: With dead ends: 1417 [2022-03-01 16:31:35,751 INFO L226 Difference]: Without dead ends: 1215 [2022-03-01 16:31:35,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:31:35,752 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 343 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:35,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2753 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-01 16:31:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1123. [2022-03-01 16:31:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4679144385026737) internal successors, (2769), 1122 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2769 transitions. [2022-03-01 16:31:35,762 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2769 transitions. Word has length 79 [2022-03-01 16:31:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:35,762 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2769 transitions. [2022-03-01 16:31:35,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2769 transitions. [2022-03-01 16:31:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:35,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:35,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:35,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-03-01 16:31:35,763 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1363674998, now seen corresponding path program 304 times [2022-03-01 16:31:35,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:35,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295758982] [2022-03-01 16:31:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:36,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:36,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295758982] [2022-03-01 16:31:36,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295758982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:36,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:36,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:36,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883954842] [2022-03-01 16:31:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:36,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:36,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:36,124 INFO L87 Difference]: Start difference. First operand 1123 states and 2769 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:38,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:39,826 INFO L93 Difference]: Finished difference Result 1405 states and 3474 transitions. [2022-03-01 16:31:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:31:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:39,828 INFO L225 Difference]: With dead ends: 1405 [2022-03-01 16:31:39,828 INFO L226 Difference]: Without dead ends: 1275 [2022-03-01 16:31:39,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3376, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:31:39,829 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 375 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:39,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2754 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1073 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:31:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-01 16:31:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1147. [2022-03-01 16:31:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.466841186736475) internal successors, (2827), 1146 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2827 transitions. [2022-03-01 16:31:39,840 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2827 transitions. Word has length 79 [2022-03-01 16:31:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:39,840 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2827 transitions. [2022-03-01 16:31:39,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2827 transitions. [2022-03-01 16:31:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:39,841 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:39,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:39,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-03-01 16:31:39,841 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2077901132, now seen corresponding path program 305 times [2022-03-01 16:31:39,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:39,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119521025] [2022-03-01 16:31:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:40,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:40,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119521025] [2022-03-01 16:31:40,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119521025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:40,186 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:40,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:40,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947809179] [2022-03-01 16:31:40,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:40,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:40,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:40,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:40,187 INFO L87 Difference]: Start difference. First operand 1147 states and 2827 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:41,585 INFO L93 Difference]: Finished difference Result 1381 states and 3408 transitions. [2022-03-01 16:31:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:31:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:41,588 INFO L225 Difference]: With dead ends: 1381 [2022-03-01 16:31:41,588 INFO L226 Difference]: Without dead ends: 1283 [2022-03-01 16:31:41,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=2623, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:31:41,588 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 291 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2735 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:31:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-03-01 16:31:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1139. [2022-03-01 16:31:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4718804920913886) internal successors, (2813), 1138 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2813 transitions. [2022-03-01 16:31:41,600 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2813 transitions. Word has length 79 [2022-03-01 16:31:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:41,600 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2813 transitions. [2022-03-01 16:31:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2813 transitions. [2022-03-01 16:31:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:41,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:41,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:41,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-03-01 16:31:41,601 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1502828886, now seen corresponding path program 306 times [2022-03-01 16:31:41,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:41,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466195173] [2022-03-01 16:31:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:41,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:41,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466195173] [2022-03-01 16:31:41,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466195173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:41,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:41,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:41,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593232934] [2022-03-01 16:31:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:41,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:41,938 INFO L87 Difference]: Start difference. First operand 1139 states and 2813 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:44,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:45,639 INFO L93 Difference]: Finished difference Result 1391 states and 3427 transitions. [2022-03-01 16:31:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:31:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:45,641 INFO L225 Difference]: With dead ends: 1391 [2022-03-01 16:31:45,641 INFO L226 Difference]: Without dead ends: 1278 [2022-03-01 16:31:45,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2721, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:31:45,642 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 306 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:45,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2909 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:31:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-01 16:31:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1139. [2022-03-01 16:31:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.468365553602812) internal successors, (2809), 1138 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2809 transitions. [2022-03-01 16:31:45,652 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2809 transitions. Word has length 79 [2022-03-01 16:31:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2809 transitions. [2022-03-01 16:31:45,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2809 transitions. [2022-03-01 16:31:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:45,653 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:45,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:45,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-03-01 16:31:45,653 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1177380660, now seen corresponding path program 307 times [2022-03-01 16:31:45,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:45,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354871259] [2022-03-01 16:31:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:46,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:46,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354871259] [2022-03-01 16:31:46,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354871259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:46,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:46,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:46,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468254130] [2022-03-01 16:31:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:46,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:46,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:46,105 INFO L87 Difference]: Start difference. First operand 1139 states and 2809 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:31:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:49,928 INFO L93 Difference]: Finished difference Result 1397 states and 3448 transitions. [2022-03-01 16:31:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:31:49,929 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:49,930 INFO L225 Difference]: With dead ends: 1397 [2022-03-01 16:31:49,930 INFO L226 Difference]: Without dead ends: 1247 [2022-03-01 16:31:49,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=278, Invalid=3262, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:31:49,931 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 369 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:49,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2896 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1089 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-01 16:31:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-01 16:31:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1135. [2022-03-01 16:31:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4673721340388006) internal successors, (2798), 1134 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2798 transitions. [2022-03-01 16:31:49,942 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2798 transitions. Word has length 79 [2022-03-01 16:31:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2798 transitions. [2022-03-01 16:31:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2798 transitions. [2022-03-01 16:31:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:49,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:49,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:49,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-03-01 16:31:49,943 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1883961624, now seen corresponding path program 308 times [2022-03-01 16:31:49,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:49,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118209950] [2022-03-01 16:31:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:50,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:50,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118209950] [2022-03-01 16:31:50,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118209950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:50,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:50,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:50,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042510119] [2022-03-01 16:31:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:50,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:50,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:50,273 INFO L87 Difference]: Start difference. First operand 1135 states and 2798 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:51,727 INFO L93 Difference]: Finished difference Result 1409 states and 3473 transitions. [2022-03-01 16:31:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:31:51,727 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:51,729 INFO L225 Difference]: With dead ends: 1409 [2022-03-01 16:31:51,729 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:31:51,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:31:51,729 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 333 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:51,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2894 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:31:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1127. [2022-03-01 16:31:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4653641207815276) internal successors, (2776), 1126 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2776 transitions. [2022-03-01 16:31:51,750 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2776 transitions. Word has length 79 [2022-03-01 16:31:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:51,750 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2776 transitions. [2022-03-01 16:31:51,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2776 transitions. [2022-03-01 16:31:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:51,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:51,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-03-01 16:31:51,752 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash 60251718, now seen corresponding path program 309 times [2022-03-01 16:31:51,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:51,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634224881] [2022-03-01 16:31:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:52,145 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:52,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634224881] [2022-03-01 16:31:52,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634224881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:52,146 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:52,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:31:52,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076881807] [2022-03-01 16:31:52,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:31:52,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:31:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:31:52,146 INFO L87 Difference]: Start difference. First operand 1127 states and 2776 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:54,384 INFO L93 Difference]: Finished difference Result 1413 states and 3476 transitions. [2022-03-01 16:31:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:31:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:54,386 INFO L225 Difference]: With dead ends: 1413 [2022-03-01 16:31:54,386 INFO L226 Difference]: Without dead ends: 1203 [2022-03-01 16:31:54,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:31:54,387 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 356 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:54,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2812 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 16:31:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-01 16:31:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1111. [2022-03-01 16:31:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.472072072072072) internal successors, (2744), 1110 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2744 transitions. [2022-03-01 16:31:54,397 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2744 transitions. Word has length 79 [2022-03-01 16:31:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:54,397 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2744 transitions. [2022-03-01 16:31:54,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2744 transitions. [2022-03-01 16:31:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:54,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:54,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-03-01 16:31:54,398 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1245773446, now seen corresponding path program 310 times [2022-03-01 16:31:54,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:54,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987691837] [2022-03-01 16:31:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:54,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:54,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987691837] [2022-03-01 16:31:54,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987691837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:54,740 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:54,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:54,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624095398] [2022-03-01 16:31:54,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:54,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:54,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:54,741 INFO L87 Difference]: Start difference. First operand 1111 states and 2744 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:56,584 INFO L93 Difference]: Finished difference Result 1421 states and 3526 transitions. [2022-03-01 16:31:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:31:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:56,586 INFO L225 Difference]: With dead ends: 1421 [2022-03-01 16:31:56,586 INFO L226 Difference]: Without dead ends: 1291 [2022-03-01 16:31:56,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:31:56,587 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 328 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:56,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3004 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:31:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-03-01 16:31:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1171. [2022-03-01 16:31:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.4794871794871796) internal successors, (2901), 1170 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2901 transitions. [2022-03-01 16:31:56,598 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2901 transitions. Word has length 79 [2022-03-01 16:31:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:56,598 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2901 transitions. [2022-03-01 16:31:56,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2901 transitions. [2022-03-01 16:31:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:56,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:56,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:56,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-03-01 16:31:56,600 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 392382280, now seen corresponding path program 311 times [2022-03-01 16:31:56,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:56,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541374396] [2022-03-01 16:31:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:56,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:56,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541374396] [2022-03-01 16:31:56,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541374396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:56,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:56,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:56,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691395513] [2022-03-01 16:31:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:56,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:56,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:56,870 INFO L87 Difference]: Start difference. First operand 1171 states and 2901 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:58,188 INFO L93 Difference]: Finished difference Result 1420 states and 3517 transitions. [2022-03-01 16:31:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:31:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:31:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:58,190 INFO L225 Difference]: With dead ends: 1420 [2022-03-01 16:31:58,190 INFO L226 Difference]: Without dead ends: 1322 [2022-03-01 16:31:58,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:31:58,190 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 289 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:58,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 3002 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-03-01 16:31:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1163. [2022-03-01 16:31:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.4845094664371774) internal successors, (2887), 1162 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2887 transitions. [2022-03-01 16:31:58,201 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2887 transitions. Word has length 79 [2022-03-01 16:31:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:58,201 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2887 transitions. [2022-03-01 16:31:58,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2887 transitions. [2022-03-01 16:31:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:31:58,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:58,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:58,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-03-01 16:31:58,202 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1106619558, now seen corresponding path program 312 times [2022-03-01 16:31:58,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:58,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638819034] [2022-03-01 16:31:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:58,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:58,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638819034] [2022-03-01 16:31:58,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638819034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:31:58,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:31:58,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:31:58,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092351636] [2022-03-01 16:31:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:31:58,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:31:58,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:31:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:31:58,536 INFO L87 Difference]: Start difference. First operand 1163 states and 2887 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:00,442 INFO L93 Difference]: Finished difference Result 1403 states and 3468 transitions. [2022-03-01 16:32:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:32:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:00,444 INFO L225 Difference]: With dead ends: 1403 [2022-03-01 16:32:00,444 INFO L226 Difference]: Without dead ends: 1290 [2022-03-01 16:32:00,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:32:00,445 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 343 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:00,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2813 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:32:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-01 16:32:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1163. [2022-03-01 16:32:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.474182444061962) internal successors, (2875), 1162 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2875 transitions. [2022-03-01 16:32:00,455 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2875 transitions. Word has length 79 [2022-03-01 16:32:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:00,455 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2875 transitions. [2022-03-01 16:32:00,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2875 transitions. [2022-03-01 16:32:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:00,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:00,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:00,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-03-01 16:32:00,457 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1432067784, now seen corresponding path program 313 times [2022-03-01 16:32:00,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:00,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112700398] [2022-03-01 16:32:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:00,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:00,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:00,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112700398] [2022-03-01 16:32:00,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112700398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:00,820 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:00,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:32:00,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583975913] [2022-03-01 16:32:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:00,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:32:00,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:32:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:32:00,820 INFO L87 Difference]: Start difference. First operand 1163 states and 2875 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:03,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:04,503 INFO L93 Difference]: Finished difference Result 1397 states and 3448 transitions. [2022-03-01 16:32:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:32:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:04,505 INFO L225 Difference]: With dead ends: 1397 [2022-03-01 16:32:04,505 INFO L226 Difference]: Without dead ends: 1247 [2022-03-01 16:32:04,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=2821, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:32:04,506 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 305 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:04,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 3022 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:32:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-01 16:32:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1159. [2022-03-01 16:32:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.4732297063903284) internal successors, (2864), 1158 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2864 transitions. [2022-03-01 16:32:04,516 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2864 transitions. Word has length 79 [2022-03-01 16:32:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:04,516 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2864 transitions. [2022-03-01 16:32:04,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2864 transitions. [2022-03-01 16:32:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:04,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:04,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:04,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-03-01 16:32:04,517 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2001317178, now seen corresponding path program 314 times [2022-03-01 16:32:04,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:04,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588778690] [2022-03-01 16:32:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:04,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:04,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588778690] [2022-03-01 16:32:04,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588778690] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:04,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:04,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:04,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511438306] [2022-03-01 16:32:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:04,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:04,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:04,814 INFO L87 Difference]: Start difference. First operand 1159 states and 2864 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:07,215 INFO L93 Difference]: Finished difference Result 1402 states and 3455 transitions. [2022-03-01 16:32:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:32:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:07,217 INFO L225 Difference]: With dead ends: 1402 [2022-03-01 16:32:07,217 INFO L226 Difference]: Without dead ends: 1304 [2022-03-01 16:32:07,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:32:07,217 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 294 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:07,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2685 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-01 16:32:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-03-01 16:32:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1183. [2022-03-01 16:32:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.472081218274112) internal successors, (2922), 1182 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2922 transitions. [2022-03-01 16:32:07,228 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2922 transitions. Word has length 79 [2022-03-01 16:32:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:07,228 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2922 transitions. [2022-03-01 16:32:07,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2922 transitions. [2022-03-01 16:32:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:07,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:07,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:07,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-03-01 16:32:07,229 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash -684784286, now seen corresponding path program 315 times [2022-03-01 16:32:07,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:07,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281995613] [2022-03-01 16:32:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:07,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:07,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281995613] [2022-03-01 16:32:07,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281995613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:07,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:07,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:07,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2194522] [2022-03-01 16:32:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:07,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:07,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:07,559 INFO L87 Difference]: Start difference. First operand 1183 states and 2922 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:09,365 INFO L93 Difference]: Finished difference Result 1370 states and 3367 transitions. [2022-03-01 16:32:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:32:09,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:09,367 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:32:09,367 INFO L226 Difference]: Without dead ends: 1211 [2022-03-01 16:32:09,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:32:09,368 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 270 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:09,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2746 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:32:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-01 16:32:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1135. [2022-03-01 16:32:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4708994708994707) internal successors, (2802), 1134 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2802 transitions. [2022-03-01 16:32:09,378 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2802 transitions. Word has length 79 [2022-03-01 16:32:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:09,378 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2802 transitions. [2022-03-01 16:32:09,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2802 transitions. [2022-03-01 16:32:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:09,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:09,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:09,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-03-01 16:32:09,379 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1587384008, now seen corresponding path program 316 times [2022-03-01 16:32:09,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:09,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215735061] [2022-03-01 16:32:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:09,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:09,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215735061] [2022-03-01 16:32:09,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215735061] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:09,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:09,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:09,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315499624] [2022-03-01 16:32:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:09,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:09,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:09,718 INFO L87 Difference]: Start difference. First operand 1135 states and 2802 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:11,868 INFO L93 Difference]: Finished difference Result 1365 states and 3368 transitions. [2022-03-01 16:32:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:32:11,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:11,870 INFO L225 Difference]: With dead ends: 1365 [2022-03-01 16:32:11,870 INFO L226 Difference]: Without dead ends: 1251 [2022-03-01 16:32:11,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:32:11,870 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 325 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:11,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2583 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:32:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-01 16:32:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1159. [2022-03-01 16:32:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.4732297063903284) internal successors, (2864), 1158 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2864 transitions. [2022-03-01 16:32:11,892 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2864 transitions. Word has length 79 [2022-03-01 16:32:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:11,892 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2864 transitions. [2022-03-01 16:32:11,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2864 transitions. [2022-03-01 16:32:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:11,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:11,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:11,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-03-01 16:32:11,893 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1220489578, now seen corresponding path program 317 times [2022-03-01 16:32:11,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:11,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015799409] [2022-03-01 16:32:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:12,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:12,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015799409] [2022-03-01 16:32:12,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015799409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:12,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:12,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:12,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685729167] [2022-03-01 16:32:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:12,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:12,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:12,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:12,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:12,197 INFO L87 Difference]: Start difference. First operand 1159 states and 2864 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:13,980 INFO L93 Difference]: Finished difference Result 1376 states and 3392 transitions. [2022-03-01 16:32:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:32:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:13,982 INFO L225 Difference]: With dead ends: 1376 [2022-03-01 16:32:13,982 INFO L226 Difference]: Without dead ends: 1278 [2022-03-01 16:32:13,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:32:13,982 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 313 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:13,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2447 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:32:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-01 16:32:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1155. [2022-03-01 16:32:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.475736568457539) internal successors, (2857), 1154 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2857 transitions. [2022-03-01 16:32:14,009 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2857 transitions. Word has length 79 [2022-03-01 16:32:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:14,009 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2857 transitions. [2022-03-01 16:32:14,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2857 transitions. [2022-03-01 16:32:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:14,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:14,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:14,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-03-01 16:32:14,010 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1934726856, now seen corresponding path program 318 times [2022-03-01 16:32:14,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:14,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758537714] [2022-03-01 16:32:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:14,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:14,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758537714] [2022-03-01 16:32:14,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758537714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:14,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:14,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:14,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333802346] [2022-03-01 16:32:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:14,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:14,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:14,336 INFO L87 Difference]: Start difference. First operand 1155 states and 2857 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:15,753 INFO L93 Difference]: Finished difference Result 1344 states and 3308 transitions. [2022-03-01 16:32:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:32:15,754 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:15,755 INFO L225 Difference]: With dead ends: 1344 [2022-03-01 16:32:15,755 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:32:15,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:32:15,756 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 302 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:15,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2485 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:32:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:32:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1155. [2022-03-01 16:32:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.472270363951473) internal successors, (2853), 1154 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2853 transitions. [2022-03-01 16:32:15,766 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2853 transitions. Word has length 79 [2022-03-01 16:32:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:15,766 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2853 transitions. [2022-03-01 16:32:15,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2853 transitions. [2022-03-01 16:32:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:15,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:15,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:15,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-03-01 16:32:15,767 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1889549626, now seen corresponding path program 319 times [2022-03-01 16:32:15,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:15,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921313023] [2022-03-01 16:32:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:16,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:16,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921313023] [2022-03-01 16:32:16,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921313023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:16,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:16,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:16,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991767943] [2022-03-01 16:32:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:16,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:16,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:16,109 INFO L87 Difference]: Start difference. First operand 1155 states and 2853 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:19,304 INFO L93 Difference]: Finished difference Result 1398 states and 3444 transitions. [2022-03-01 16:32:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:32:19,305 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:19,306 INFO L225 Difference]: With dead ends: 1398 [2022-03-01 16:32:19,307 INFO L226 Difference]: Without dead ends: 1300 [2022-03-01 16:32:19,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:32:19,307 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 295 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:19,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2623 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 16:32:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-03-01 16:32:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1179. [2022-03-01 16:32:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.4711375212224107) internal successors, (2911), 1178 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2911 transitions. [2022-03-01 16:32:19,318 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2911 transitions. Word has length 79 [2022-03-01 16:32:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:19,318 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2911 transitions. [2022-03-01 16:32:19,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2911 transitions. [2022-03-01 16:32:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:19,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:19,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:19,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-03-01 16:32:19,319 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -573016734, now seen corresponding path program 320 times [2022-03-01 16:32:19,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:19,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401361704] [2022-03-01 16:32:19,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:19,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:19,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:19,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401361704] [2022-03-01 16:32:19,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401361704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:19,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:19,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:19,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622552499] [2022-03-01 16:32:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:19,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:19,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:19,665 INFO L87 Difference]: Start difference. First operand 1179 states and 2911 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:22,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:23,147 INFO L93 Difference]: Finished difference Result 1434 states and 3523 transitions. [2022-03-01 16:32:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:32:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:23,149 INFO L225 Difference]: With dead ends: 1434 [2022-03-01 16:32:23,149 INFO L226 Difference]: Without dead ends: 1291 [2022-03-01 16:32:23,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:32:23,150 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 285 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:23,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2696 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1056 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-01 16:32:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-03-01 16:32:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1215. [2022-03-01 16:32:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.469522240527183) internal successors, (2998), 1214 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2998 transitions. [2022-03-01 16:32:23,161 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2998 transitions. Word has length 79 [2022-03-01 16:32:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:23,161 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2998 transitions. [2022-03-01 16:32:23,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2998 transitions. [2022-03-01 16:32:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:23,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:23,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:23,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-03-01 16:32:23,162 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1055665756, now seen corresponding path program 321 times [2022-03-01 16:32:23,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:23,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453835283] [2022-03-01 16:32:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:23,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:23,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453835283] [2022-03-01 16:32:23,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453835283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:23,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:23,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:32:23,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439828130] [2022-03-01 16:32:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:23,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:32:23,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:32:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:32:23,499 INFO L87 Difference]: Start difference. First operand 1215 states and 2998 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:25,421 INFO L93 Difference]: Finished difference Result 1494 states and 3684 transitions. [2022-03-01 16:32:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:32:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:25,423 INFO L225 Difference]: With dead ends: 1494 [2022-03-01 16:32:25,423 INFO L226 Difference]: Without dead ends: 1396 [2022-03-01 16:32:25,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:32:25,424 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 292 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:25,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 3069 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:32:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2022-03-01 16:32:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1219. [2022-03-01 16:32:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.4704433497536944) internal successors, (3009), 1218 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3009 transitions. [2022-03-01 16:32:25,434 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3009 transitions. Word has length 79 [2022-03-01 16:32:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:25,434 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3009 transitions. [2022-03-01 16:32:25,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3009 transitions. [2022-03-01 16:32:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:25,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:25,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:25,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-03-01 16:32:25,436 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 260867136, now seen corresponding path program 322 times [2022-03-01 16:32:25,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:25,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847174858] [2022-03-01 16:32:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:25,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:25,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:25,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847174858] [2022-03-01 16:32:25,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847174858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:25,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:25,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:32:25,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030131871] [2022-03-01 16:32:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:25,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:32:25,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:32:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:32:25,736 INFO L87 Difference]: Start difference. First operand 1219 states and 3009 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:28,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:29,560 INFO L93 Difference]: Finished difference Result 1426 states and 3509 transitions. [2022-03-01 16:32:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:32:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:29,562 INFO L225 Difference]: With dead ends: 1426 [2022-03-01 16:32:29,562 INFO L226 Difference]: Without dead ends: 1283 [2022-03-01 16:32:29,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=2918, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:32:29,563 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 331 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:29,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2837 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1112 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-01 16:32:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-03-01 16:32:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1135. [2022-03-01 16:32:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4779541446208113) internal successors, (2810), 1134 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2810 transitions. [2022-03-01 16:32:29,574 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2810 transitions. Word has length 79 [2022-03-01 16:32:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:29,574 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2810 transitions. [2022-03-01 16:32:29,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2810 transitions. [2022-03-01 16:32:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:29,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:29,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:29,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-03-01 16:32:29,575 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash -869647894, now seen corresponding path program 323 times [2022-03-01 16:32:29,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:29,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013045338] [2022-03-01 16:32:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:29,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:29,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:29,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013045338] [2022-03-01 16:32:29,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013045338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:29,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:29,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:29,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050463450] [2022-03-01 16:32:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:29,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:29,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:29,906 INFO L87 Difference]: Start difference. First operand 1135 states and 2810 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:32,202 INFO L93 Difference]: Finished difference Result 1385 states and 3402 transitions. [2022-03-01 16:32:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:32:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:32,204 INFO L225 Difference]: With dead ends: 1385 [2022-03-01 16:32:32,204 INFO L226 Difference]: Without dead ends: 1211 [2022-03-01 16:32:32,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:32:32,205 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 321 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:32,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2550 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:32:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-01 16:32:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1135. [2022-03-01 16:32:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4673721340388006) internal successors, (2798), 1134 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2798 transitions. [2022-03-01 16:32:32,227 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2798 transitions. Word has length 79 [2022-03-01 16:32:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:32,227 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2798 transitions. [2022-03-01 16:32:32,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2798 transitions. [2022-03-01 16:32:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:32,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:32,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:32,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-03-01 16:32:32,228 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:32,229 INFO L85 PathProgramCache]: Analyzing trace with hash -427957876, now seen corresponding path program 324 times [2022-03-01 16:32:32,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:32,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252314206] [2022-03-01 16:32:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:32,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:32,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252314206] [2022-03-01 16:32:32,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252314206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:32,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:32,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:32,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577310680] [2022-03-01 16:32:32,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:32,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:32,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:32,563 INFO L87 Difference]: Start difference. First operand 1135 states and 2798 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:35,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:36,268 INFO L93 Difference]: Finished difference Result 1430 states and 3516 transitions. [2022-03-01 16:32:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:32:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:36,270 INFO L225 Difference]: With dead ends: 1430 [2022-03-01 16:32:36,270 INFO L226 Difference]: Without dead ends: 1332 [2022-03-01 16:32:36,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:32:36,270 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 336 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:36,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2697 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1018 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:32:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-03-01 16:32:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1195. [2022-03-01 16:32:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4648241206030153) internal successors, (2943), 1194 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2943 transitions. [2022-03-01 16:32:36,281 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2943 transitions. Word has length 79 [2022-03-01 16:32:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:36,281 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2943 transitions. [2022-03-01 16:32:36,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2943 transitions. [2022-03-01 16:32:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:36,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:36,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:36,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-03-01 16:32:36,283 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash 888575016, now seen corresponding path program 325 times [2022-03-01 16:32:36,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:36,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552886082] [2022-03-01 16:32:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:36,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:36,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552886082] [2022-03-01 16:32:36,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552886082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:36,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:36,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:36,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277318384] [2022-03-01 16:32:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:36,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:36,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:36,609 INFO L87 Difference]: Start difference. First operand 1195 states and 2943 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:38,988 INFO L93 Difference]: Finished difference Result 1465 states and 3606 transitions. [2022-03-01 16:32:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:32:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:38,990 INFO L225 Difference]: With dead ends: 1465 [2022-03-01 16:32:38,990 INFO L226 Difference]: Without dead ends: 1302 [2022-03-01 16:32:38,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2811, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:32:38,990 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 344 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:38,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2590 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:32:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-03-01 16:32:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1191. [2022-03-01 16:32:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.4605042016806724) internal successors, (2928), 1190 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2928 transitions. [2022-03-01 16:32:39,001 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2928 transitions. Word has length 79 [2022-03-01 16:32:39,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:39,001 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2928 transitions. [2022-03-01 16:32:39,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2928 transitions. [2022-03-01 16:32:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:39,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:39,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:39,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-03-01 16:32:39,003 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash -241940014, now seen corresponding path program 326 times [2022-03-01 16:32:39,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:39,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489586806] [2022-03-01 16:32:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:39,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:39,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489586806] [2022-03-01 16:32:39,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489586806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:39,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:39,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:32:39,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80457605] [2022-03-01 16:32:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:39,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:32:39,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:32:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:32:39,328 INFO L87 Difference]: Start difference. First operand 1191 states and 2928 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:41,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:42,199 INFO L93 Difference]: Finished difference Result 1425 states and 3488 transitions. [2022-03-01 16:32:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:32:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:42,200 INFO L225 Difference]: With dead ends: 1425 [2022-03-01 16:32:42,200 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:32:42,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:32:42,201 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 304 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:42,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2583 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-01 16:32:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:32:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1191. [2022-03-01 16:32:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.453781512605042) internal successors, (2920), 1190 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2920 transitions. [2022-03-01 16:32:42,211 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2920 transitions. Word has length 79 [2022-03-01 16:32:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:42,211 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2920 transitions. [2022-03-01 16:32:42,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2920 transitions. [2022-03-01 16:32:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:42,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:42,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:42,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-03-01 16:32:42,213 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash 150604966, now seen corresponding path program 327 times [2022-03-01 16:32:42,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:42,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131330255] [2022-03-01 16:32:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:42,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:42,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:42,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131330255] [2022-03-01 16:32:42,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131330255] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:42,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:42,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:32:42,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584774668] [2022-03-01 16:32:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:32:42,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:32:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:32:42,532 INFO L87 Difference]: Start difference. First operand 1191 states and 2920 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:43,741 INFO L93 Difference]: Finished difference Result 1518 states and 3721 transitions. [2022-03-01 16:32:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:32:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:43,743 INFO L225 Difference]: With dead ends: 1518 [2022-03-01 16:32:43,743 INFO L226 Difference]: Without dead ends: 1266 [2022-03-01 16:32:43,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:32:43,744 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 280 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:43,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2743 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:32:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-03-01 16:32:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1199. [2022-03-01 16:32:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.4624373956594323) internal successors, (2950), 1198 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2950 transitions. [2022-03-01 16:32:43,756 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2950 transitions. Word has length 79 [2022-03-01 16:32:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:43,756 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2950 transitions. [2022-03-01 16:32:43,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:43,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2950 transitions. [2022-03-01 16:32:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:43,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:43,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:43,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-03-01 16:32:43,758 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash 885386282, now seen corresponding path program 328 times [2022-03-01 16:32:43,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:43,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973309911] [2022-03-01 16:32:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:44,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:44,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973309911] [2022-03-01 16:32:44,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973309911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:44,077 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:44,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:32:44,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108222662] [2022-03-01 16:32:44,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:44,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:32:44,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:32:44,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:32:44,078 INFO L87 Difference]: Start difference. First operand 1199 states and 2950 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:45,531 INFO L93 Difference]: Finished difference Result 1527 states and 3773 transitions. [2022-03-01 16:32:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:32:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:45,533 INFO L225 Difference]: With dead ends: 1527 [2022-03-01 16:32:45,533 INFO L226 Difference]: Without dead ends: 1378 [2022-03-01 16:32:45,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=3135, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:32:45,534 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 386 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:45,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2634 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:32:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-03-01 16:32:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1235. [2022-03-01 16:32:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 2.4837925445705022) internal successors, (3065), 1234 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3065 transitions. [2022-03-01 16:32:45,545 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3065 transitions. Word has length 79 [2022-03-01 16:32:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:45,545 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 3065 transitions. [2022-03-01 16:32:45,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3065 transitions. [2022-03-01 16:32:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:45,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:45,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:45,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-03-01 16:32:45,546 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1871414384, now seen corresponding path program 329 times [2022-03-01 16:32:45,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:45,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119905476] [2022-03-01 16:32:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:45,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:45,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:45,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119905476] [2022-03-01 16:32:45,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119905476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:45,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:45,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:45,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104180775] [2022-03-01 16:32:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:45,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:45,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:45,817 INFO L87 Difference]: Start difference. First operand 1235 states and 3065 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:48,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:32:49,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:49,429 INFO L93 Difference]: Finished difference Result 1508 states and 3730 transitions. [2022-03-01 16:32:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:32:49,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:49,431 INFO L225 Difference]: With dead ends: 1508 [2022-03-01 16:32:49,431 INFO L226 Difference]: Without dead ends: 1326 [2022-03-01 16:32:49,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:32:49,432 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 350 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:49,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2671 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1011 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-01 16:32:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-03-01 16:32:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1239. [2022-03-01 16:32:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 2.491114701130856) internal successors, (3084), 1238 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3084 transitions. [2022-03-01 16:32:49,443 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3084 transitions. Word has length 79 [2022-03-01 16:32:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 3084 transitions. [2022-03-01 16:32:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3084 transitions. [2022-03-01 16:32:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:49,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:49,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:49,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-03-01 16:32:49,445 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:49,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1764205806, now seen corresponding path program 330 times [2022-03-01 16:32:49,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:49,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660497000] [2022-03-01 16:32:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:49,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:49,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660497000] [2022-03-01 16:32:49,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660497000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:49,718 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:49,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:49,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627833468] [2022-03-01 16:32:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:49,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:49,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:49,719 INFO L87 Difference]: Start difference. First operand 1239 states and 3084 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:52,254 INFO L93 Difference]: Finished difference Result 1526 states and 3792 transitions. [2022-03-01 16:32:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:32:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:52,256 INFO L225 Difference]: With dead ends: 1526 [2022-03-01 16:32:52,256 INFO L226 Difference]: Without dead ends: 1364 [2022-03-01 16:32:52,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=2807, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:32:52,257 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 339 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:52,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2417 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 16:32:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-03-01 16:32:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1235. [2022-03-01 16:32:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 2.5162074554294978) internal successors, (3105), 1234 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3105 transitions. [2022-03-01 16:32:52,269 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3105 transitions. Word has length 79 [2022-03-01 16:32:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:52,269 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 3105 transitions. [2022-03-01 16:32:52,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3105 transitions. [2022-03-01 16:32:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:52,270 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:52,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:52,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-03-01 16:32:52,270 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1480656586, now seen corresponding path program 331 times [2022-03-01 16:32:52,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:52,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561917490] [2022-03-01 16:32:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:52,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:52,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:52,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561917490] [2022-03-01 16:32:52,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561917490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:52,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:52,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:52,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392280111] [2022-03-01 16:32:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:52,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:52,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:52,576 INFO L87 Difference]: Start difference. First operand 1235 states and 3105 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:53,791 INFO L93 Difference]: Finished difference Result 1438 states and 3595 transitions. [2022-03-01 16:32:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:32:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:53,793 INFO L225 Difference]: With dead ends: 1438 [2022-03-01 16:32:53,793 INFO L226 Difference]: Without dead ends: 1327 [2022-03-01 16:32:53,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:32:53,793 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 264 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:53,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2657 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:32:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-03-01 16:32:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1227. [2022-03-01 16:32:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.50815660685155) internal successors, (3075), 1226 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3075 transitions. [2022-03-01 16:32:53,804 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3075 transitions. Word has length 79 [2022-03-01 16:32:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:53,804 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3075 transitions. [2022-03-01 16:32:53,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3075 transitions. [2022-03-01 16:32:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:53,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:53,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:53,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-03-01 16:32:53,806 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 627265420, now seen corresponding path program 332 times [2022-03-01 16:32:53,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:53,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032727113] [2022-03-01 16:32:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:54,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:54,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032727113] [2022-03-01 16:32:54,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032727113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:54,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:54,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:32:54,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396681230] [2022-03-01 16:32:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:32:54,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:32:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:32:54,095 INFO L87 Difference]: Start difference. First operand 1227 states and 3075 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:55,406 INFO L93 Difference]: Finished difference Result 1406 states and 3511 transitions. [2022-03-01 16:32:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:32:55,406 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:55,408 INFO L225 Difference]: With dead ends: 1406 [2022-03-01 16:32:55,408 INFO L226 Difference]: Without dead ends: 1315 [2022-03-01 16:32:55,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:32:55,408 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 290 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:55,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2603 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:32:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-03-01 16:32:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1211. [2022-03-01 16:32:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5082644628099175) internal successors, (3035), 1210 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3035 transitions. [2022-03-01 16:32:55,419 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3035 transitions. Word has length 79 [2022-03-01 16:32:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:55,419 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3035 transitions. [2022-03-01 16:32:55,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3035 transitions. [2022-03-01 16:32:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:55,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:55,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:55,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-03-01 16:32:55,420 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1666950924, now seen corresponding path program 333 times [2022-03-01 16:32:55,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:55,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263828525] [2022-03-01 16:32:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:55,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:55,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263828525] [2022-03-01 16:32:55,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263828525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:55,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:55,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:55,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109876820] [2022-03-01 16:32:55,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:55,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:55,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:55,780 INFO L87 Difference]: Start difference. First operand 1211 states and 3035 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:56,887 INFO L93 Difference]: Finished difference Result 1421 states and 3542 transitions. [2022-03-01 16:32:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:32:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:56,889 INFO L225 Difference]: With dead ends: 1421 [2022-03-01 16:32:56,889 INFO L226 Difference]: Without dead ends: 1271 [2022-03-01 16:32:56,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:32:56,889 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 247 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:56,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 2565 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:32:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-01 16:32:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1207. [2022-03-01 16:32:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.5074626865671643) internal successors, (3024), 1206 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3024 transitions. [2022-03-01 16:32:56,900 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3024 transitions. Word has length 79 [2022-03-01 16:32:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:56,900 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3024 transitions. [2022-03-01 16:32:56,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:56,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3024 transitions. [2022-03-01 16:32:56,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:56,901 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:56,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:56,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-03-01 16:32:56,901 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1766434038, now seen corresponding path program 334 times [2022-03-01 16:32:56,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:56,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006092651] [2022-03-01 16:32:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:56,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:57,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:57,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006092651] [2022-03-01 16:32:57,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006092651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:57,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:57,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:57,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449670640] [2022-03-01 16:32:57,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:57,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:57,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:57,234 INFO L87 Difference]: Start difference. First operand 1207 states and 3024 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:58,749 INFO L93 Difference]: Finished difference Result 1434 states and 3571 transitions. [2022-03-01 16:32:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:32:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:32:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:58,751 INFO L225 Difference]: With dead ends: 1434 [2022-03-01 16:32:58,752 INFO L226 Difference]: Without dead ends: 1336 [2022-03-01 16:32:58,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:32:58,752 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 288 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:58,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2637 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:32:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-03-01 16:32:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1207. [2022-03-01 16:32:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.5074626865671643) internal successors, (3024), 1206 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3024 transitions. [2022-03-01 16:32:58,763 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3024 transitions. Word has length 79 [2022-03-01 16:32:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:58,763 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3024 transitions. [2022-03-01 16:32:58,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3024 transitions. [2022-03-01 16:32:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:32:58,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:58,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:58,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-03-01 16:32:58,764 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash -449901146, now seen corresponding path program 335 times [2022-03-01 16:32:58,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:58,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927438720] [2022-03-01 16:32:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:59,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:59,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927438720] [2022-03-01 16:32:59,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927438720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:32:59,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:32:59,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:32:59,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861380501] [2022-03-01 16:32:59,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:32:59,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:32:59,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:59,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:32:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:32:59,096 INFO L87 Difference]: Start difference. First operand 1207 states and 3024 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:00,290 INFO L93 Difference]: Finished difference Result 1417 states and 3518 transitions. [2022-03-01 16:33:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:33:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:00,292 INFO L225 Difference]: With dead ends: 1417 [2022-03-01 16:33:00,292 INFO L226 Difference]: Without dead ends: 1258 [2022-03-01 16:33:00,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:33:00,293 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 298 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:00,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2497 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-03-01 16:33:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1183. [2022-03-01 16:33:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.505922165820643) internal successors, (2962), 1182 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2962 transitions. [2022-03-01 16:33:00,303 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2962 transitions. Word has length 79 [2022-03-01 16:33:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:00,303 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2962 transitions. [2022-03-01 16:33:00,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2962 transitions. [2022-03-01 16:33:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:00,304 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:00,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-03-01 16:33:00,304 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2134116460, now seen corresponding path program 336 times [2022-03-01 16:33:00,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:00,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187422569] [2022-03-01 16:33:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:00,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:00,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187422569] [2022-03-01 16:33:00,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187422569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:00,607 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:00,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:00,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001744334] [2022-03-01 16:33:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:00,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:00,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:00,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:00,608 INFO L87 Difference]: Start difference. First operand 1183 states and 2962 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:02,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:33:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:03,360 INFO L93 Difference]: Finished difference Result 1409 states and 3513 transitions. [2022-03-01 16:33:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:33:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:03,362 INFO L225 Difference]: With dead ends: 1409 [2022-03-01 16:33:03,362 INFO L226 Difference]: Without dead ends: 1279 [2022-03-01 16:33:03,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:03,363 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 303 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:03,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2491 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-01 16:33:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-01 16:33:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1199. [2022-03-01 16:33:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5025041736227047) internal successors, (2998), 1198 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2998 transitions. [2022-03-01 16:33:03,374 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2998 transitions. Word has length 79 [2022-03-01 16:33:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:03,375 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2998 transitions. [2022-03-01 16:33:03,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2998 transitions. [2022-03-01 16:33:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:03,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:03,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:03,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-03-01 16:33:03,377 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1280725294, now seen corresponding path program 337 times [2022-03-01 16:33:03,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:03,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363281655] [2022-03-01 16:33:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:03,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:03,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363281655] [2022-03-01 16:33:03,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363281655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:03,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:03,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:03,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289602607] [2022-03-01 16:33:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:03,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:03,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:03,751 INFO L87 Difference]: Start difference. First operand 1199 states and 2998 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:05,274 INFO L93 Difference]: Finished difference Result 1400 states and 3482 transitions. [2022-03-01 16:33:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:33:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:05,276 INFO L225 Difference]: With dead ends: 1400 [2022-03-01 16:33:05,276 INFO L226 Difference]: Without dead ends: 1302 [2022-03-01 16:33:05,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=2715, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:33:05,277 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 286 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:05,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2714 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-03-01 16:33:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1203. [2022-03-01 16:33:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5) internal successors, (3005), 1202 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3005 transitions. [2022-03-01 16:33:05,287 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3005 transitions. Word has length 79 [2022-03-01 16:33:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:05,287 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3005 transitions. [2022-03-01 16:33:05,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3005 transitions. [2022-03-01 16:33:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:05,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:05,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:05,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-03-01 16:33:05,289 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1994962572, now seen corresponding path program 338 times [2022-03-01 16:33:05,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:05,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855348181] [2022-03-01 16:33:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:05,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:05,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855348181] [2022-03-01 16:33:05,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855348181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:05,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:05,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:05,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973725873] [2022-03-01 16:33:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:05,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:05,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:05,609 INFO L87 Difference]: Start difference. First operand 1203 states and 3005 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:06,987 INFO L93 Difference]: Finished difference Result 1383 states and 3433 transitions. [2022-03-01 16:33:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:33:06,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:06,989 INFO L225 Difference]: With dead ends: 1383 [2022-03-01 16:33:06,989 INFO L226 Difference]: Without dead ends: 1270 [2022-03-01 16:33:06,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2613, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:33:06,990 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 335 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:06,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 2424 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-03-01 16:33:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1191. [2022-03-01 16:33:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.504201680672269) internal successors, (2980), 1190 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2980 transitions. [2022-03-01 16:33:07,001 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2980 transitions. Word has length 79 [2022-03-01 16:33:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:07,001 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2980 transitions. [2022-03-01 16:33:07,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2980 transitions. [2022-03-01 16:33:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:07,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:07,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:07,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-03-01 16:33:07,003 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1974556498, now seen corresponding path program 339 times [2022-03-01 16:33:07,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:07,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304101337] [2022-03-01 16:33:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:07,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:07,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304101337] [2022-03-01 16:33:07,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304101337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:07,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:07,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:07,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016490813] [2022-03-01 16:33:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:07,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:07,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:07,272 INFO L87 Difference]: Start difference. First operand 1191 states and 2980 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:08,593 INFO L93 Difference]: Finished difference Result 1389 states and 3454 transitions. [2022-03-01 16:33:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:33:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:08,595 INFO L225 Difference]: With dead ends: 1389 [2022-03-01 16:33:08,595 INFO L226 Difference]: Without dead ends: 1239 [2022-03-01 16:33:08,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:33:08,596 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 267 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:08,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2394 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-03-01 16:33:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1187. [2022-03-01 16:33:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.503372681281619) internal successors, (2969), 1186 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2969 transitions. [2022-03-01 16:33:08,606 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2969 transitions. Word has length 79 [2022-03-01 16:33:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:08,606 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2969 transitions. [2022-03-01 16:33:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2969 transitions. [2022-03-01 16:33:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:08,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:08,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:08,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-03-01 16:33:08,608 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1613829834, now seen corresponding path program 340 times [2022-03-01 16:33:08,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:08,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775995571] [2022-03-01 16:33:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:08,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:08,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775995571] [2022-03-01 16:33:08,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775995571] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:08,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:08,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:08,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123502211] [2022-03-01 16:33:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:08,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:08,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:08,942 INFO L87 Difference]: Start difference. First operand 1187 states and 2969 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:10,033 INFO L93 Difference]: Finished difference Result 1401 states and 3479 transitions. [2022-03-01 16:33:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:33:10,034 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:10,035 INFO L225 Difference]: With dead ends: 1401 [2022-03-01 16:33:10,035 INFO L226 Difference]: Without dead ends: 1227 [2022-03-01 16:33:10,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1963, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:33:10,036 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 281 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:10,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2298 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-01 16:33:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1175. [2022-03-01 16:33:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.507666098807496) internal successors, (2944), 1174 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2944 transitions. [2022-03-01 16:33:10,048 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2944 transitions. Word has length 79 [2022-03-01 16:33:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:10,048 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2944 transitions. [2022-03-01 16:33:10,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2944 transitions. [2022-03-01 16:33:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:10,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:10,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:10,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-03-01 16:33:10,049 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash 147984844, now seen corresponding path program 341 times [2022-03-01 16:33:10,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:10,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314187743] [2022-03-01 16:33:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:10,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:10,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314187743] [2022-03-01 16:33:10,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314187743] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:10,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:10,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:10,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499613903] [2022-03-01 16:33:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:10,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:10,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:10,403 INFO L87 Difference]: Start difference. First operand 1175 states and 2944 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:11,937 INFO L93 Difference]: Finished difference Result 1433 states and 3583 transitions. [2022-03-01 16:33:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:33:11,938 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:11,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:11,940 INFO L225 Difference]: With dead ends: 1433 [2022-03-01 16:33:11,940 INFO L226 Difference]: Without dead ends: 1303 [2022-03-01 16:33:11,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:33:11,940 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 329 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:11,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2539 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-01 16:33:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1211. [2022-03-01 16:33:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5082644628099175) internal successors, (3035), 1210 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3035 transitions. [2022-03-01 16:33:11,952 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3035 transitions. Word has length 79 [2022-03-01 16:33:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:11,952 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3035 transitions. [2022-03-01 16:33:11,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3035 transitions. [2022-03-01 16:33:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:11,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:11,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:11,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-03-01 16:33:11,953 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash -705406322, now seen corresponding path program 342 times [2022-03-01 16:33:11,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:11,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324016879] [2022-03-01 16:33:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:12,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:12,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324016879] [2022-03-01 16:33:12,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324016879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:12,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:12,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:12,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783180149] [2022-03-01 16:33:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:12,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:12,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:12,291 INFO L87 Difference]: Start difference. First operand 1211 states and 3035 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:13,682 INFO L93 Difference]: Finished difference Result 1424 states and 3552 transitions. [2022-03-01 16:33:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:33:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:13,685 INFO L225 Difference]: With dead ends: 1424 [2022-03-01 16:33:13,685 INFO L226 Difference]: Without dead ends: 1326 [2022-03-01 16:33:13,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:33:13,686 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 281 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:13,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2740 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-03-01 16:33:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1215. [2022-03-01 16:33:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.5057660626029654) internal successors, (3042), 1214 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 3042 transitions. [2022-03-01 16:33:13,697 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 3042 transitions. Word has length 79 [2022-03-01 16:33:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:13,697 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 3042 transitions. [2022-03-01 16:33:13,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 3042 transitions. [2022-03-01 16:33:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:13,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:13,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:13,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-03-01 16:33:13,699 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 8830956, now seen corresponding path program 343 times [2022-03-01 16:33:13,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:13,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109431637] [2022-03-01 16:33:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:14,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:14,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109431637] [2022-03-01 16:33:14,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109431637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:14,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:14,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:14,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55427321] [2022-03-01 16:33:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:14,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:14,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:14,054 INFO L87 Difference]: Start difference. First operand 1215 states and 3042 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:15,544 INFO L93 Difference]: Finished difference Result 1407 states and 3503 transitions. [2022-03-01 16:33:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:33:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:15,546 INFO L225 Difference]: With dead ends: 1407 [2022-03-01 16:33:15,546 INFO L226 Difference]: Without dead ends: 1294 [2022-03-01 16:33:15,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:33:15,546 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 358 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:15,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2559 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-01 16:33:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1203. [2022-03-01 16:33:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5033277870216306) internal successors, (3009), 1202 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3009 transitions. [2022-03-01 16:33:15,557 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3009 transitions. Word has length 79 [2022-03-01 16:33:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:15,557 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3009 transitions. [2022-03-01 16:33:15,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3009 transitions. [2022-03-01 16:33:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:15,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:15,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:15,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-03-01 16:33:15,559 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash 334279182, now seen corresponding path program 344 times [2022-03-01 16:33:15,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:15,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261065182] [2022-03-01 16:33:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:15,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:15,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261065182] [2022-03-01 16:33:15,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261065182] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:15,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:15,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:15,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921405688] [2022-03-01 16:33:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:15,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:15,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:15,892 INFO L87 Difference]: Start difference. First operand 1203 states and 3009 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:17,267 INFO L93 Difference]: Finished difference Result 1421 states and 3534 transitions. [2022-03-01 16:33:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:33:17,267 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:17,269 INFO L225 Difference]: With dead ends: 1421 [2022-03-01 16:33:17,269 INFO L226 Difference]: Without dead ends: 1271 [2022-03-01 16:33:17,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2719, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:33:17,270 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 336 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:17,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2676 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-01 16:33:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1199. [2022-03-01 16:33:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5025041736227047) internal successors, (2998), 1198 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2998 transitions. [2022-03-01 16:33:17,280 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2998 transitions. Word has length 79 [2022-03-01 16:33:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:17,280 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2998 transitions. [2022-03-01 16:33:17,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2998 transitions. [2022-03-01 16:33:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:17,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:17,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:17,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-03-01 16:33:17,282 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1195861516, now seen corresponding path program 345 times [2022-03-01 16:33:17,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:17,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035870967] [2022-03-01 16:33:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:17,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:17,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035870967] [2022-03-01 16:33:17,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035870967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:17,610 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:17,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:17,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294463983] [2022-03-01 16:33:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:17,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:17,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:17,610 INFO L87 Difference]: Start difference. First operand 1199 states and 2998 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:18,865 INFO L93 Difference]: Finished difference Result 1402 states and 3479 transitions. [2022-03-01 16:33:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:33:18,866 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:18,867 INFO L225 Difference]: With dead ends: 1402 [2022-03-01 16:33:18,867 INFO L226 Difference]: Without dead ends: 1304 [2022-03-01 16:33:18,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:33:18,868 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 264 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:18,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2655 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-03-01 16:33:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1199. [2022-03-01 16:33:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5025041736227047) internal successors, (2998), 1198 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2998 transitions. [2022-03-01 16:33:18,878 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2998 transitions. Word has length 79 [2022-03-01 16:33:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:18,879 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2998 transitions. [2022-03-01 16:33:18,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2998 transitions. [2022-03-01 16:33:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:18,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:18,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:18,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-03-01 16:33:18,880 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1782572888, now seen corresponding path program 346 times [2022-03-01 16:33:18,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:18,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124674560] [2022-03-01 16:33:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:19,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:19,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124674560] [2022-03-01 16:33:19,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124674560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:19,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:19,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:19,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184336884] [2022-03-01 16:33:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:19,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:19,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:19,199 INFO L87 Difference]: Start difference. First operand 1199 states and 2998 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:20,494 INFO L93 Difference]: Finished difference Result 1370 states and 3391 transitions. [2022-03-01 16:33:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:33:20,494 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:20,496 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:33:20,496 INFO L226 Difference]: Without dead ends: 1211 [2022-03-01 16:33:20,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:20,496 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 286 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:20,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2517 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-01 16:33:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1175. [2022-03-01 16:33:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.504258943781942) internal successors, (2940), 1174 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-03-01 16:33:20,507 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-03-01 16:33:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:20,507 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-03-01 16:33:20,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-03-01 16:33:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:20,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:20,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:20,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-03-01 16:33:20,508 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash -448915766, now seen corresponding path program 347 times [2022-03-01 16:33:20,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:20,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101883002] [2022-03-01 16:33:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:20,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:20,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101883002] [2022-03-01 16:33:20,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101883002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:20,861 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:20,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:20,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392320526] [2022-03-01 16:33:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:20,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:20,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:20,862 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:22,272 INFO L93 Difference]: Finished difference Result 1381 states and 3436 transitions. [2022-03-01 16:33:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:33:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:22,274 INFO L225 Difference]: With dead ends: 1381 [2022-03-01 16:33:22,274 INFO L226 Difference]: Without dead ends: 1251 [2022-03-01 16:33:22,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:33:22,274 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 259 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:22,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2533 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-01 16:33:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1191. [2022-03-01 16:33:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.500840336134454) internal successors, (2976), 1190 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2976 transitions. [2022-03-01 16:33:22,284 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2976 transitions. Word has length 79 [2022-03-01 16:33:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:22,284 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2976 transitions. [2022-03-01 16:33:22,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2976 transitions. [2022-03-01 16:33:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:22,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:22,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:22,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-03-01 16:33:22,286 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1302306932, now seen corresponding path program 348 times [2022-03-01 16:33:22,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:22,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870471723] [2022-03-01 16:33:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:22,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:22,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870471723] [2022-03-01 16:33:22,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870471723] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:22,607 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:22,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:22,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823592520] [2022-03-01 16:33:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:22,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:22,607 INFO L87 Difference]: Start difference. First operand 1191 states and 2976 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:23,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:33:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:24,789 INFO L93 Difference]: Finished difference Result 1368 states and 3394 transitions. [2022-03-01 16:33:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:33:24,789 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:24,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:24,790 INFO L225 Difference]: With dead ends: 1368 [2022-03-01 16:33:24,790 INFO L226 Difference]: Without dead ends: 1270 [2022-03-01 16:33:24,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:24,791 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 264 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:24,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2549 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 16:33:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-03-01 16:33:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1195. [2022-03-01 16:33:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4983249581239533) internal successors, (2983), 1194 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2983 transitions. [2022-03-01 16:33:24,802 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2983 transitions. Word has length 79 [2022-03-01 16:33:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:24,802 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2983 transitions. [2022-03-01 16:33:24,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2983 transitions. [2022-03-01 16:33:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:24,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:24,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:24,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-03-01 16:33:24,803 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -588069654, now seen corresponding path program 349 times [2022-03-01 16:33:24,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:24,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33097102] [2022-03-01 16:33:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:25,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:25,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33097102] [2022-03-01 16:33:25,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33097102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:25,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:25,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:25,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429901825] [2022-03-01 16:33:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:25,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:25,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:25,137 INFO L87 Difference]: Start difference. First operand 1195 states and 2983 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:26,211 INFO L93 Difference]: Finished difference Result 1336 states and 3310 transitions. [2022-03-01 16:33:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:33:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:26,213 INFO L225 Difference]: With dead ends: 1336 [2022-03-01 16:33:26,213 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:33:26,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:33:26,213 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 321 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:26,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2477 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:33:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1183. [2022-03-01 16:33:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.499153976311337) internal successors, (2954), 1182 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2954 transitions. [2022-03-01 16:33:26,223 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2954 transitions. Word has length 79 [2022-03-01 16:33:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:26,224 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2954 transitions. [2022-03-01 16:33:26,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2954 transitions. [2022-03-01 16:33:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:26,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:26,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:26,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-03-01 16:33:26,225 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash -29111062, now seen corresponding path program 350 times [2022-03-01 16:33:26,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:26,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380176230] [2022-03-01 16:33:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:26,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:26,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380176230] [2022-03-01 16:33:26,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380176230] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:26,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:26,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:26,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327104774] [2022-03-01 16:33:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:26,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:26,517 INFO L87 Difference]: Start difference. First operand 1183 states and 2954 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:27,835 INFO L93 Difference]: Finished difference Result 1367 states and 3385 transitions. [2022-03-01 16:33:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:33:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:27,837 INFO L225 Difference]: With dead ends: 1367 [2022-03-01 16:33:27,837 INFO L226 Difference]: Without dead ends: 1269 [2022-03-01 16:33:27,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:33:27,837 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 290 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:27,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2391 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-03-01 16:33:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1187. [2022-03-01 16:33:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.496627318718381) internal successors, (2961), 1186 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2961 transitions. [2022-03-01 16:33:27,848 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2961 transitions. Word has length 79 [2022-03-01 16:33:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:27,849 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2961 transitions. [2022-03-01 16:33:27,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2961 transitions. [2022-03-01 16:33:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:27,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:27,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:27,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-03-01 16:33:27,850 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1287421830, now seen corresponding path program 351 times [2022-03-01 16:33:27,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:27,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419966316] [2022-03-01 16:33:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:28,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:28,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419966316] [2022-03-01 16:33:28,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419966316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:28,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:28,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:28,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040369829] [2022-03-01 16:33:28,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:28,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:28,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:28,147 INFO L87 Difference]: Start difference. First operand 1187 states and 2961 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:29,583 INFO L93 Difference]: Finished difference Result 1335 states and 3297 transitions. [2022-03-01 16:33:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:33:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:29,585 INFO L225 Difference]: With dead ends: 1335 [2022-03-01 16:33:29,585 INFO L226 Difference]: Without dead ends: 1203 [2022-03-01 16:33:29,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:29,585 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 312 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:29,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2357 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-01 16:33:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1167. [2022-03-01 16:33:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.4957118353344767) internal successors, (2910), 1166 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2910 transitions. [2022-03-01 16:33:29,607 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2910 transitions. Word has length 79 [2022-03-01 16:33:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:29,607 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2910 transitions. [2022-03-01 16:33:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2910 transitions. [2022-03-01 16:33:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:29,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:29,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:29,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-03-01 16:33:29,608 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:29,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2141512938, now seen corresponding path program 352 times [2022-03-01 16:33:29,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:29,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648553856] [2022-03-01 16:33:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:29,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:29,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:29,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648553856] [2022-03-01 16:33:29,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648553856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:29,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:29,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:29,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053457146] [2022-03-01 16:33:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:29,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:29,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:29,999 INFO L87 Difference]: Start difference. First operand 1167 states and 2910 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:33,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:33:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:33,351 INFO L93 Difference]: Finished difference Result 1339 states and 3312 transitions. [2022-03-01 16:33:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 16:33:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:33,353 INFO L225 Difference]: With dead ends: 1339 [2022-03-01 16:33:33,353 INFO L226 Difference]: Without dead ends: 1241 [2022-03-01 16:33:33,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:33:33,353 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 295 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:33,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2515 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:33:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-01 16:33:33,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1167. [2022-03-01 16:33:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.4957118353344767) internal successors, (2910), 1166 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2910 transitions. [2022-03-01 16:33:33,364 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2910 transitions. Word has length 79 [2022-03-01 16:33:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:33,364 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2910 transitions. [2022-03-01 16:33:33,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2910 transitions. [2022-03-01 16:33:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:33,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:33,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:33,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-03-01 16:33:33,365 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -836921466, now seen corresponding path program 353 times [2022-03-01 16:33:33,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:33,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535939988] [2022-03-01 16:33:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:33,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:33,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535939988] [2022-03-01 16:33:33,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535939988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:33,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:33,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:33,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546193283] [2022-03-01 16:33:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:33,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:33,725 INFO L87 Difference]: Start difference. First operand 1167 states and 2910 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:35,087 INFO L93 Difference]: Finished difference Result 1307 states and 3224 transitions. [2022-03-01 16:33:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:33:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:35,089 INFO L225 Difference]: With dead ends: 1307 [2022-03-01 16:33:35,089 INFO L226 Difference]: Without dead ends: 1171 [2022-03-01 16:33:35,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:35,089 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 272 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:35,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2581 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-01 16:33:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1143. [2022-03-01 16:33:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.507880910683012) internal successors, (2864), 1142 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2864 transitions. [2022-03-01 16:33:35,099 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2864 transitions. Word has length 79 [2022-03-01 16:33:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:35,100 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2864 transitions. [2022-03-01 16:33:35,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2864 transitions. [2022-03-01 16:33:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:35,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:35,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:35,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-03-01 16:33:35,101 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1103048232, now seen corresponding path program 354 times [2022-03-01 16:33:35,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:35,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600018745] [2022-03-01 16:33:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:35,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:35,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600018745] [2022-03-01 16:33:35,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600018745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:35,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:35,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:35,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802975070] [2022-03-01 16:33:35,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:35,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:35,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:35,448 INFO L87 Difference]: Start difference. First operand 1143 states and 2864 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:37,070 INFO L93 Difference]: Finished difference Result 1393 states and 3481 transitions. [2022-03-01 16:33:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:33:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:37,072 INFO L225 Difference]: With dead ends: 1393 [2022-03-01 16:33:37,072 INFO L226 Difference]: Without dead ends: 1263 [2022-03-01 16:33:37,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:33:37,073 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 355 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:37,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2837 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:33:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-01 16:33:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1187. [2022-03-01 16:33:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.5101180438448565) internal successors, (2977), 1186 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2977 transitions. [2022-03-01 16:33:37,084 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2977 transitions. Word has length 79 [2022-03-01 16:33:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:37,084 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2977 transitions. [2022-03-01 16:33:37,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2977 transitions. [2022-03-01 16:33:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:37,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:37,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:37,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-03-01 16:33:37,085 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash 249657066, now seen corresponding path program 355 times [2022-03-01 16:33:37,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:37,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871912080] [2022-03-01 16:33:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:37,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:37,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871912080] [2022-03-01 16:33:37,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871912080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:37,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:37,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:37,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046111438] [2022-03-01 16:33:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:37,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:37,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:37,373 INFO L87 Difference]: Start difference. First operand 1187 states and 2977 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:38,849 INFO L93 Difference]: Finished difference Result 1392 states and 3472 transitions. [2022-03-01 16:33:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:33:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:38,851 INFO L225 Difference]: With dead ends: 1392 [2022-03-01 16:33:38,851 INFO L226 Difference]: Without dead ends: 1294 [2022-03-01 16:33:38,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:33:38,852 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 312 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:38,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2711 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:33:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-01 16:33:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1191. [2022-03-01 16:33:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.507563025210084) internal successors, (2984), 1190 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2984 transitions. [2022-03-01 16:33:38,863 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2984 transitions. Word has length 79 [2022-03-01 16:33:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:38,863 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2984 transitions. [2022-03-01 16:33:38,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2984 transitions. [2022-03-01 16:33:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:38,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:38,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:38,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-03-01 16:33:38,865 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 963894344, now seen corresponding path program 356 times [2022-03-01 16:33:38,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:38,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372172270] [2022-03-01 16:33:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:39,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:39,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372172270] [2022-03-01 16:33:39,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372172270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:39,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:39,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:39,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061155780] [2022-03-01 16:33:39,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:39,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:39,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:39,291 INFO L87 Difference]: Start difference. First operand 1191 states and 2984 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:42,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:33:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:42,633 INFO L93 Difference]: Finished difference Result 1375 states and 3423 transitions. [2022-03-01 16:33:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:33:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:42,635 INFO L225 Difference]: With dead ends: 1375 [2022-03-01 16:33:42,635 INFO L226 Difference]: Without dead ends: 1262 [2022-03-01 16:33:42,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:33:42,635 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 314 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:42,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2847 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-01 16:33:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-01 16:33:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1179. [2022-03-01 16:33:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.50509337860781) internal successors, (2951), 1178 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2951 transitions. [2022-03-01 16:33:42,646 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2951 transitions. Word has length 79 [2022-03-01 16:33:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:42,646 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2951 transitions. [2022-03-01 16:33:42,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2951 transitions. [2022-03-01 16:33:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:42,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:42,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:42,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-03-01 16:33:42,648 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1289342570, now seen corresponding path program 357 times [2022-03-01 16:33:42,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:42,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715426442] [2022-03-01 16:33:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:42,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:42,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715426442] [2022-03-01 16:33:42,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715426442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:42,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:42,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:42,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252395306] [2022-03-01 16:33:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:42,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:42,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:42,985 INFO L87 Difference]: Start difference. First operand 1179 states and 2951 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:44,994 INFO L93 Difference]: Finished difference Result 1369 states and 3403 transitions. [2022-03-01 16:33:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:33:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:44,996 INFO L225 Difference]: With dead ends: 1369 [2022-03-01 16:33:44,996 INFO L226 Difference]: Without dead ends: 1219 [2022-03-01 16:33:44,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2612, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:33:44,997 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 331 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:44,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2613 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:33:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-01 16:33:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1175. [2022-03-01 16:33:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.504258943781942) internal successors, (2940), 1174 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-03-01 16:33:45,021 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-03-01 16:33:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:45,021 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-03-01 16:33:45,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-03-01 16:33:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:45,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:45,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:45,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-03-01 16:33:45,022 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2144042392, now seen corresponding path program 358 times [2022-03-01 16:33:45,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:45,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328575430] [2022-03-01 16:33:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:45,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:45,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328575430] [2022-03-01 16:33:45,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328575430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:45,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:45,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:45,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456107134] [2022-03-01 16:33:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:45,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:45,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:45,300 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:47,180 INFO L93 Difference]: Finished difference Result 1374 states and 3410 transitions. [2022-03-01 16:33:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:33:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:47,181 INFO L225 Difference]: With dead ends: 1374 [2022-03-01 16:33:47,182 INFO L226 Difference]: Without dead ends: 1276 [2022-03-01 16:33:47,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 16:33:47,182 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 291 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:47,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2514 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:33:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-03-01 16:33:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1175. [2022-03-01 16:33:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.504258943781942) internal successors, (2940), 1174 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-03-01 16:33:47,193 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-03-01 16:33:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-03-01 16:33:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-03-01 16:33:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:47,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:47,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:47,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-03-01 16:33:47,194 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:47,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash -827509500, now seen corresponding path program 359 times [2022-03-01 16:33:47,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:47,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743075600] [2022-03-01 16:33:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:47,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:47,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743075600] [2022-03-01 16:33:47,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743075600] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:47,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:47,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:47,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105783610] [2022-03-01 16:33:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:47,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:47,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:47,530 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:50,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:33:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:50,944 INFO L93 Difference]: Finished difference Result 1370 states and 3387 transitions. [2022-03-01 16:33:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:33:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:50,946 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:33:50,946 INFO L226 Difference]: Without dead ends: 1211 [2022-03-01 16:33:50,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:33:50,946 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 304 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:50,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2706 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-01 16:33:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-01 16:33:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1167. [2022-03-01 16:33:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.502572898799314) internal successors, (2918), 1166 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2918 transitions. [2022-03-01 16:33:50,957 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2918 transitions. Word has length 79 [2022-03-01 16:33:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:50,957 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2918 transitions. [2022-03-01 16:33:50,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2918 transitions. [2022-03-01 16:33:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:50,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:50,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:50,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-03-01 16:33:50,958 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:50,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2052482078, now seen corresponding path program 360 times [2022-03-01 16:33:50,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:50,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058783211] [2022-03-01 16:33:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:50,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:51,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:51,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058783211] [2022-03-01 16:33:51,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058783211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:51,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:51,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:51,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476001016] [2022-03-01 16:33:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:51,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:51,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:51,281 INFO L87 Difference]: Start difference. First operand 1167 states and 2918 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:52,619 INFO L93 Difference]: Finished difference Result 1444 states and 3586 transitions. [2022-03-01 16:33:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:33:52,619 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:52,621 INFO L225 Difference]: With dead ends: 1444 [2022-03-01 16:33:52,621 INFO L226 Difference]: Without dead ends: 1265 [2022-03-01 16:33:52,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=2694, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:33:52,621 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 319 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:52,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2621 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-03-01 16:33:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1175. [2022-03-01 16:33:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.4974446337308347) internal successors, (2932), 1174 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2932 transitions. [2022-03-01 16:33:52,640 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2932 transitions. Word has length 79 [2022-03-01 16:33:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:52,640 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2932 transitions. [2022-03-01 16:33:52,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2932 transitions. [2022-03-01 16:33:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:52,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:52,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:52,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-03-01 16:33:52,642 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1444658794, now seen corresponding path program 361 times [2022-03-01 16:33:52,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:52,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133307724] [2022-03-01 16:33:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:52,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:52,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133307724] [2022-03-01 16:33:52,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133307724] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:52,973 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:52,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:52,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263072561] [2022-03-01 16:33:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:52,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:52,973 INFO L87 Difference]: Start difference. First operand 1175 states and 2932 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:54,268 INFO L93 Difference]: Finished difference Result 1349 states and 3344 transitions. [2022-03-01 16:33:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:33:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:54,270 INFO L225 Difference]: With dead ends: 1349 [2022-03-01 16:33:54,270 INFO L226 Difference]: Without dead ends: 1235 [2022-03-01 16:33:54,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:33:54,271 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 277 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:54,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2425 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-01 16:33:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1179. [2022-03-01 16:33:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.49490662139219) internal successors, (2939), 1178 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2939 transitions. [2022-03-01 16:33:54,281 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2939 transitions. Word has length 79 [2022-03-01 16:33:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:54,281 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2939 transitions. [2022-03-01 16:33:54,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2939 transitions. [2022-03-01 16:33:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:54,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:54,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:54,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-03-01 16:33:54,283 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1077764364, now seen corresponding path program 362 times [2022-03-01 16:33:54,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:54,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441540494] [2022-03-01 16:33:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:54,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:54,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:54,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441540494] [2022-03-01 16:33:54,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441540494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:54,613 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:54,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:54,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555923129] [2022-03-01 16:33:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:54,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:54,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:54,613 INFO L87 Difference]: Start difference. First operand 1179 states and 2939 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:55,871 INFO L93 Difference]: Finished difference Result 1360 states and 3368 transitions. [2022-03-01 16:33:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:33:55,872 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:55,873 INFO L225 Difference]: With dead ends: 1360 [2022-03-01 16:33:55,873 INFO L226 Difference]: Without dead ends: 1262 [2022-03-01 16:33:55,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 16:33:55,874 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 286 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:55,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2397 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-01 16:33:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1183. [2022-03-01 16:33:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.4923857868020303) internal successors, (2946), 1182 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2946 transitions. [2022-03-01 16:33:55,885 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2946 transitions. Word has length 79 [2022-03-01 16:33:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:55,885 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2946 transitions. [2022-03-01 16:33:55,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2946 transitions. [2022-03-01 16:33:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:55,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:55,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-03-01 16:33:55,886 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1792001642, now seen corresponding path program 363 times [2022-03-01 16:33:55,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:55,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675327311] [2022-03-01 16:33:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:55,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:56,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:56,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675327311] [2022-03-01 16:33:56,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675327311] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:56,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:56,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:56,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91948347] [2022-03-01 16:33:56,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:56,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:56,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:56,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:56,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:56,225 INFO L87 Difference]: Start difference. First operand 1183 states and 2946 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:57,415 INFO L93 Difference]: Finished difference Result 1328 states and 3284 transitions. [2022-03-01 16:33:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:33:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:57,417 INFO L225 Difference]: With dead ends: 1328 [2022-03-01 16:33:57,417 INFO L226 Difference]: Without dead ends: 1219 [2022-03-01 16:33:57,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:57,418 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 277 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:57,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2623 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:33:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-01 16:33:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1175. [2022-03-01 16:33:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.4940374787052813) internal successors, (2928), 1174 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2928 transitions. [2022-03-01 16:33:57,428 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2928 transitions. Word has length 79 [2022-03-01 16:33:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:57,428 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2928 transitions. [2022-03-01 16:33:57,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2928 transitions. [2022-03-01 16:33:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:57,429 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:57,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:57,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-03-01 16:33:57,430 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:57,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2032274840, now seen corresponding path program 364 times [2022-03-01 16:33:57,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:57,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338226982] [2022-03-01 16:33:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:57,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:57,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338226982] [2022-03-01 16:33:57,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338226982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:57,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:57,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:33:57,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950698785] [2022-03-01 16:33:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:57,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:33:57,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:33:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:33:57,771 INFO L87 Difference]: Start difference. First operand 1175 states and 2928 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:33:59,032 INFO L93 Difference]: Finished difference Result 1313 states and 3249 transitions. [2022-03-01 16:33:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:33:59,033 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:33:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:33:59,034 INFO L225 Difference]: With dead ends: 1313 [2022-03-01 16:33:59,034 INFO L226 Difference]: Without dead ends: 1195 [2022-03-01 16:33:59,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:33:59,035 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 296 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:33:59,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2391 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:33:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-01 16:33:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1155. [2022-03-01 16:33:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-03-01 16:33:59,045 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-03-01 16:33:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:33:59,045 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-03-01 16:33:59,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:33:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-03-01 16:33:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:33:59,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:33:59,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:33:59,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-03-01 16:33:59,046 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:33:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:33:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1198390970, now seen corresponding path program 365 times [2022-03-01 16:33:59,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:33:59,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630795014] [2022-03-01 16:33:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:33:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:33:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:33:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:33:59,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:33:59,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630795014] [2022-03-01 16:33:59,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630795014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:33:59,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:33:59,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:33:59,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941035240] [2022-03-01 16:33:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:33:59,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:33:59,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:33:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:33:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:33:59,396 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:01,060 INFO L93 Difference]: Finished difference Result 1382 states and 3428 transitions. [2022-03-01 16:34:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:34:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:01,062 INFO L225 Difference]: With dead ends: 1382 [2022-03-01 16:34:01,062 INFO L226 Difference]: Without dead ends: 1284 [2022-03-01 16:34:01,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:34:01,063 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 289 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:01,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2955 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:34:01,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-03-01 16:34:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1155. [2022-03-01 16:34:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-03-01 16:34:01,074 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-03-01 16:34:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:01,074 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-03-01 16:34:01,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-03-01 16:34:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:01,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:01,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-03-01 16:34:01,075 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 118141922, now seen corresponding path program 366 times [2022-03-01 16:34:01,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:01,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467505105] [2022-03-01 16:34:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:01,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:01,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467505105] [2022-03-01 16:34:01,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467505105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:01,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:01,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:01,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475201723] [2022-03-01 16:34:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:01,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:01,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:01,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:01,430 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:02,884 INFO L93 Difference]: Finished difference Result 1338 states and 3311 transitions. [2022-03-01 16:34:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:34:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:02,886 INFO L225 Difference]: With dead ends: 1338 [2022-03-01 16:34:02,886 INFO L226 Difference]: Without dead ends: 1203 [2022-03-01 16:34:02,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:34:02,887 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 291 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:02,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2928 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:34:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-01 16:34:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1159. [2022-03-01 16:34:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.4974093264248705) internal successors, (2892), 1158 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2892 transitions. [2022-03-01 16:34:02,898 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2892 transitions. Word has length 79 [2022-03-01 16:34:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:02,898 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2892 transitions. [2022-03-01 16:34:02,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2892 transitions. [2022-03-01 16:34:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:02,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:02,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:02,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-03-01 16:34:02,899 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1012373108, now seen corresponding path program 367 times [2022-03-01 16:34:02,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:02,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030247178] [2022-03-01 16:34:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:02,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:03,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:03,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030247178] [2022-03-01 16:34:03,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030247178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:03,251 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:03,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:34:03,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741271293] [2022-03-01 16:34:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:03,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:34:03,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:34:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:34:03,251 INFO L87 Difference]: Start difference. First operand 1159 states and 2892 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:04,498 INFO L93 Difference]: Finished difference Result 1341 states and 3313 transitions. [2022-03-01 16:34:04,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:34:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:04,500 INFO L225 Difference]: With dead ends: 1341 [2022-03-01 16:34:04,500 INFO L226 Difference]: Without dead ends: 1167 [2022-03-01 16:34:04,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 16:34:04,500 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 317 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:04,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2494 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:34:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-01 16:34:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1143. [2022-03-01 16:34:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.497373029772329) internal successors, (2852), 1142 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2852 transitions. [2022-03-01 16:34:04,511 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2852 transitions. Word has length 79 [2022-03-01 16:34:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:04,511 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2852 transitions. [2022-03-01 16:34:04,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2852 transitions. [2022-03-01 16:34:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:04,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:04,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:04,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-03-01 16:34:04,512 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 745849802, now seen corresponding path program 368 times [2022-03-01 16:34:04,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:04,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51932691] [2022-03-01 16:34:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:04,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:04,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51932691] [2022-03-01 16:34:04,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51932691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:04,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:04,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-01 16:34:04,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845792528] [2022-03-01 16:34:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:04,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 16:34:04,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 16:34:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:34:04,830 INFO L87 Difference]: Start difference. First operand 1143 states and 2852 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:07,480 INFO L93 Difference]: Finished difference Result 1306 states and 3231 transitions. [2022-03-01 16:34:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:34:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:07,482 INFO L225 Difference]: With dead ends: 1306 [2022-03-01 16:34:07,482 INFO L226 Difference]: Without dead ends: 1171 [2022-03-01 16:34:07,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-03-01 16:34:07,483 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 322 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:07,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2506 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 16:34:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-01 16:34:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1119. [2022-03-01 16:34:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4955277280858676) internal successors, (2790), 1118 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2790 transitions. [2022-03-01 16:34:07,494 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2790 transitions. Word has length 79 [2022-03-01 16:34:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:07,494 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2790 transitions. [2022-03-01 16:34:07,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2790 transitions. [2022-03-01 16:34:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:07,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:07,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:07,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-03-01 16:34:07,495 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -384665228, now seen corresponding path program 369 times [2022-03-01 16:34:07,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:07,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493899215] [2022-03-01 16:34:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:07,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:07,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:07,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493899215] [2022-03-01 16:34:07,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493899215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:07,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:07,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:34:07,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77827611] [2022-03-01 16:34:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:07,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:34:07,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:34:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:34:07,836 INFO L87 Difference]: Start difference. First operand 1119 states and 2790 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:09,200 INFO L93 Difference]: Finished difference Result 1317 states and 3255 transitions. [2022-03-01 16:34:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:34:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:09,202 INFO L225 Difference]: With dead ends: 1317 [2022-03-01 16:34:09,203 INFO L226 Difference]: Without dead ends: 1155 [2022-03-01 16:34:09,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 16:34:09,203 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 275 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:09,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2456 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:34:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-01 16:34:09,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1115. [2022-03-01 16:34:09,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.494614003590664) internal successors, (2779), 1114 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2779 transitions. [2022-03-01 16:34:09,224 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2779 transitions. Word has length 79 [2022-03-01 16:34:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:09,224 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2779 transitions. [2022-03-01 16:34:09,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2779 transitions. [2022-03-01 16:34:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:09,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:09,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:09,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-03-01 16:34:09,225 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash 7879752, now seen corresponding path program 370 times [2022-03-01 16:34:09,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:09,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994708187] [2022-03-01 16:34:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:09,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:09,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:09,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994708187] [2022-03-01 16:34:09,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994708187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:09,573 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:09,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-01 16:34:09,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246912536] [2022-03-01 16:34:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:09,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:34:09,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:34:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:34:09,574 INFO L87 Difference]: Start difference. First operand 1115 states and 2779 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:10,722 INFO L93 Difference]: Finished difference Result 1430 states and 3547 transitions. [2022-03-01 16:34:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:34:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:10,724 INFO L225 Difference]: With dead ends: 1430 [2022-03-01 16:34:10,724 INFO L226 Difference]: Without dead ends: 1194 [2022-03-01 16:34:10,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:34:10,725 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 282 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:10,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2431 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:34:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-01 16:34:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-03-01 16:34:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5027624309392267) internal successors, (2718), 1086 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2718 transitions. [2022-03-01 16:34:10,735 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2718 transitions. Word has length 79 [2022-03-01 16:34:10,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:10,735 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2718 transitions. [2022-03-01 16:34:10,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2718 transitions. [2022-03-01 16:34:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:10,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:10,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:10,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-03-01 16:34:10,736 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -749199738, now seen corresponding path program 371 times [2022-03-01 16:34:10,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:10,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646604034] [2022-03-01 16:34:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:11,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:11,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646604034] [2022-03-01 16:34:11,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646604034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:11,109 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:11,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:11,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99201592] [2022-03-01 16:34:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:11,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:11,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:11,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:11,109 INFO L87 Difference]: Start difference. First operand 1087 states and 2718 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:12,942 INFO L93 Difference]: Finished difference Result 1405 states and 3522 transitions. [2022-03-01 16:34:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:34:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:12,944 INFO L225 Difference]: With dead ends: 1405 [2022-03-01 16:34:12,944 INFO L226 Difference]: Without dead ends: 1275 [2022-03-01 16:34:12,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=3717, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 16:34:12,944 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 333 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:12,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2873 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:34:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-01 16:34:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1151. [2022-03-01 16:34:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.5095652173913043) internal successors, (2886), 1150 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2886 transitions. [2022-03-01 16:34:12,956 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2886 transitions. Word has length 79 [2022-03-01 16:34:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:12,956 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2886 transitions. [2022-03-01 16:34:12,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2886 transitions. [2022-03-01 16:34:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:12,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:12,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:12,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-03-01 16:34:12,957 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:12,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1602590904, now seen corresponding path program 372 times [2022-03-01 16:34:12,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:12,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65771077] [2022-03-01 16:34:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:12,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:13,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:13,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65771077] [2022-03-01 16:34:13,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65771077] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:13,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:13,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:13,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053910041] [2022-03-01 16:34:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:13,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:13,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:13,248 INFO L87 Difference]: Start difference. First operand 1151 states and 2886 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:14,859 INFO L93 Difference]: Finished difference Result 1404 states and 3513 transitions. [2022-03-01 16:34:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:34:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:14,861 INFO L225 Difference]: With dead ends: 1404 [2022-03-01 16:34:14,861 INFO L226 Difference]: Without dead ends: 1306 [2022-03-01 16:34:14,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:34:14,862 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 333 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:14,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2879 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:34:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-03-01 16:34:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1155. [2022-03-01 16:34:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5069324090121317) internal successors, (2893), 1154 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2893 transitions. [2022-03-01 16:34:14,873 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2893 transitions. Word has length 79 [2022-03-01 16:34:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:14,873 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2893 transitions. [2022-03-01 16:34:14,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2893 transitions. [2022-03-01 16:34:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:14,874 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:14,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:14,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-03-01 16:34:14,874 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -888353626, now seen corresponding path program 373 times [2022-03-01 16:34:14,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:14,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266417931] [2022-03-01 16:34:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:15,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:15,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266417931] [2022-03-01 16:34:15,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266417931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:15,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:15,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:15,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953871093] [2022-03-01 16:34:15,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:15,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:15,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:15,220 INFO L87 Difference]: Start difference. First operand 1155 states and 2893 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:18,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:34:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:18,896 INFO L93 Difference]: Finished difference Result 1387 states and 3464 transitions. [2022-03-01 16:34:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:34:18,896 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:18,898 INFO L225 Difference]: With dead ends: 1387 [2022-03-01 16:34:18,898 INFO L226 Difference]: Without dead ends: 1274 [2022-03-01 16:34:18,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:34:18,899 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 385 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:18,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 2910 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1146 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-01 16:34:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-03-01 16:34:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1143. [2022-03-01 16:34:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.5043782837127844) internal successors, (2860), 1142 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2860 transitions. [2022-03-01 16:34:18,909 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2860 transitions. Word has length 79 [2022-03-01 16:34:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2860 transitions. [2022-03-01 16:34:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2860 transitions. [2022-03-01 16:34:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:18,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:18,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:18,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-03-01 16:34:18,911 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash -562905400, now seen corresponding path program 374 times [2022-03-01 16:34:18,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:18,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067158683] [2022-03-01 16:34:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:18,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:19,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:19,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067158683] [2022-03-01 16:34:19,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067158683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:19,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:19,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:19,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676900030] [2022-03-01 16:34:19,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:19,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:19,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:19,278 INFO L87 Difference]: Start difference. First operand 1143 states and 2860 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:20,796 INFO L93 Difference]: Finished difference Result 1393 states and 3473 transitions. [2022-03-01 16:34:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 16:34:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:20,798 INFO L225 Difference]: With dead ends: 1393 [2022-03-01 16:34:20,798 INFO L226 Difference]: Without dead ends: 1243 [2022-03-01 16:34:20,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=288, Invalid=3372, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:34:20,798 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 313 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:20,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2899 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:34:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-01 16:34:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1139. [2022-03-01 16:34:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5035149384885766) internal successors, (2849), 1138 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2849 transitions. [2022-03-01 16:34:20,808 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2849 transitions. Word has length 79 [2022-03-01 16:34:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:20,809 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2849 transitions. [2022-03-01 16:34:20,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2849 transitions. [2022-03-01 16:34:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:20,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:20,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:20,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-03-01 16:34:20,810 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash 298676934, now seen corresponding path program 375 times [2022-03-01 16:34:20,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:20,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191582617] [2022-03-01 16:34:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:21,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:21,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191582617] [2022-03-01 16:34:21,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191582617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:21,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:21,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:21,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348702006] [2022-03-01 16:34:21,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:21,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:21,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:21,157 INFO L87 Difference]: Start difference. First operand 1139 states and 2849 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:24,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:34:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:25,150 INFO L93 Difference]: Finished difference Result 1461 states and 3609 transitions. [2022-03-01 16:34:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:34:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:25,152 INFO L225 Difference]: With dead ends: 1461 [2022-03-01 16:34:25,152 INFO L226 Difference]: Without dead ends: 1363 [2022-03-01 16:34:25,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=3241, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:34:25,152 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 314 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:25,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2930 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1142 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-01 16:34:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-03-01 16:34:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1151. [2022-03-01 16:34:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.502608695652174) internal successors, (2878), 1150 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2878 transitions. [2022-03-01 16:34:25,163 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2878 transitions. Word has length 79 [2022-03-01 16:34:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:25,163 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2878 transitions. [2022-03-01 16:34:25,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2878 transitions. [2022-03-01 16:34:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:25,164 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:25,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:25,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-03-01 16:34:25,164 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1012914212, now seen corresponding path program 376 times [2022-03-01 16:34:25,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:25,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926230234] [2022-03-01 16:34:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:25,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:25,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926230234] [2022-03-01 16:34:25,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926230234] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:25,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:25,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:25,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498285520] [2022-03-01 16:34:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:25,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:25,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:25,508 INFO L87 Difference]: Start difference. First operand 1151 states and 2878 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:27,064 INFO L93 Difference]: Finished difference Result 1366 states and 3396 transitions. [2022-03-01 16:34:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:34:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:27,066 INFO L225 Difference]: With dead ends: 1366 [2022-03-01 16:34:27,066 INFO L226 Difference]: Without dead ends: 1191 [2022-03-01 16:34:27,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=3020, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:34:27,067 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 332 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:27,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2657 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:34:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-01 16:34:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1115. [2022-03-01 16:34:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.5017953321364454) internal successors, (2787), 1114 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2787 transitions. [2022-03-01 16:34:27,078 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2787 transitions. Word has length 79 [2022-03-01 16:34:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:27,078 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2787 transitions. [2022-03-01 16:34:27,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2787 transitions. [2022-03-01 16:34:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:27,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:27,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:27,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-03-01 16:34:27,080 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash -407589176, now seen corresponding path program 377 times [2022-03-01 16:34:27,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:27,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969414657] [2022-03-01 16:34:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:27,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:27,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969414657] [2022-03-01 16:34:27,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969414657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:27,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:27,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:27,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78873986] [2022-03-01 16:34:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:27,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:27,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:27,459 INFO L87 Difference]: Start difference. First operand 1115 states and 2787 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:29,428 INFO L93 Difference]: Finished difference Result 1337 states and 3331 transitions. [2022-03-01 16:34:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 16:34:29,428 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:29,430 INFO L225 Difference]: With dead ends: 1337 [2022-03-01 16:34:29,430 INFO L226 Difference]: Without dead ends: 1223 [2022-03-01 16:34:29,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=2711, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:34:29,430 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 301 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:29,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2602 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 16:34:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-01 16:34:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1139. [2022-03-01 16:34:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5035149384885766) internal successors, (2849), 1138 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2849 transitions. [2022-03-01 16:34:29,440 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2849 transitions. Word has length 79 [2022-03-01 16:34:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:29,440 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2849 transitions. [2022-03-01 16:34:29,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2849 transitions. [2022-03-01 16:34:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:29,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:29,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:29,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-03-01 16:34:29,442 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -774483606, now seen corresponding path program 378 times [2022-03-01 16:34:29,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:29,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841381083] [2022-03-01 16:34:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:29,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:29,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841381083] [2022-03-01 16:34:29,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841381083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:29,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:29,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:29,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678939642] [2022-03-01 16:34:29,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:29,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:29,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:29,840 INFO L87 Difference]: Start difference. First operand 1139 states and 2849 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:31,468 INFO L93 Difference]: Finished difference Result 1348 states and 3355 transitions. [2022-03-01 16:34:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:34:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:31,469 INFO L225 Difference]: With dead ends: 1348 [2022-03-01 16:34:31,470 INFO L226 Difference]: Without dead ends: 1250 [2022-03-01 16:34:31,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:34:31,470 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 310 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:31,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2574 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:34:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-01 16:34:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1143. [2022-03-01 16:34:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.500875656742557) internal successors, (2856), 1142 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2856 transitions. [2022-03-01 16:34:31,480 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2856 transitions. Word has length 79 [2022-03-01 16:34:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:31,481 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2856 transitions. [2022-03-01 16:34:31,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2856 transitions. [2022-03-01 16:34:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:31,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:31,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:31,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-03-01 16:34:31,482 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -60246328, now seen corresponding path program 379 times [2022-03-01 16:34:31,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:31,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429327410] [2022-03-01 16:34:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:31,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:31,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429327410] [2022-03-01 16:34:31,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429327410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:31,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:31,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:31,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882967644] [2022-03-01 16:34:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:31,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:31,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:31,837 INFO L87 Difference]: Start difference. First operand 1143 states and 2856 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:33,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:34:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:34,379 INFO L93 Difference]: Finished difference Result 1316 states and 3271 transitions. [2022-03-01 16:34:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:34:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:34,380 INFO L225 Difference]: With dead ends: 1316 [2022-03-01 16:34:34,381 INFO L226 Difference]: Without dead ends: 1207 [2022-03-01 16:34:34,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=2808, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:34:34,381 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 322 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:34,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2606 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-01 16:34:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-01 16:34:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1135. [2022-03-01 16:34:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.502645502645503) internal successors, (2838), 1134 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2838 transitions. [2022-03-01 16:34:34,391 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2838 transitions. Word has length 79 [2022-03-01 16:34:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:34,391 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2838 transitions. [2022-03-01 16:34:34,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2838 transitions. [2022-03-01 16:34:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:34,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:34,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-03-01 16:34:34,393 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 410444486, now seen corresponding path program 380 times [2022-03-01 16:34:34,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:34,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847511792] [2022-03-01 16:34:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:34,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:34,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847511792] [2022-03-01 16:34:34,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847511792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:34,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:34,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:34,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781410017] [2022-03-01 16:34:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:34,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:34,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:34,751 INFO L87 Difference]: Start difference. First operand 1135 states and 2838 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:36,563 INFO L93 Difference]: Finished difference Result 1370 states and 3407 transitions. [2022-03-01 16:34:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:34:36,564 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:36,565 INFO L225 Difference]: With dead ends: 1370 [2022-03-01 16:34:36,565 INFO L226 Difference]: Without dead ends: 1272 [2022-03-01 16:34:36,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:34:36,566 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 291 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:36,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2857 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:34:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-03-01 16:34:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1159. [2022-03-01 16:34:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5008635578583767) internal successors, (2896), 1158 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2896 transitions. [2022-03-01 16:34:36,577 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2896 transitions. Word has length 79 [2022-03-01 16:34:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:36,577 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2896 transitions. [2022-03-01 16:34:36,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2896 transitions. [2022-03-01 16:34:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:36,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:36,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:36,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-03-01 16:34:36,579 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1726977378, now seen corresponding path program 381 times [2022-03-01 16:34:36,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:36,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273090297] [2022-03-01 16:34:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:36,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:36,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273090297] [2022-03-01 16:34:36,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273090297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:36,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:36,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:36,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188821173] [2022-03-01 16:34:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:36,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:36,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:36,858 INFO L87 Difference]: Start difference. First operand 1159 states and 2896 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:39,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:34:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:40,980 INFO L93 Difference]: Finished difference Result 1338 states and 3319 transitions. [2022-03-01 16:34:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:34:40,980 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:40,982 INFO L225 Difference]: With dead ends: 1338 [2022-03-01 16:34:40,982 INFO L226 Difference]: Without dead ends: 1195 [2022-03-01 16:34:40,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:34:40,982 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 326 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:40,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2845 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1077 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-01 16:34:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-01 16:34:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1127. [2022-03-01 16:34:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-03-01 16:34:40,993 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-03-01 16:34:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:40,993 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-03-01 16:34:40,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-03-01 16:34:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:40,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:40,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:40,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-03-01 16:34:40,995 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1244328356, now seen corresponding path program 382 times [2022-03-01 16:34:40,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:40,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766997007] [2022-03-01 16:34:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:40,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:41,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:41,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766997007] [2022-03-01 16:34:41,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766997007] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:41,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:41,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:41,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691012473] [2022-03-01 16:34:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:41,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:41,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:41,362 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:45,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 16:34:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:45,893 INFO L93 Difference]: Finished difference Result 1398 states and 3480 transitions. [2022-03-01 16:34:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:34:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:45,895 INFO L225 Difference]: With dead ends: 1398 [2022-03-01 16:34:45,895 INFO L226 Difference]: Without dead ends: 1300 [2022-03-01 16:34:45,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:34:45,896 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 360 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:45,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 3040 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-03-01 16:34:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-03-01 16:34:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1155. [2022-03-01 16:34:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-03-01 16:34:45,920 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-03-01 16:34:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:45,920 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-03-01 16:34:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-03-01 16:34:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:45,921 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:45,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:45,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-03-01 16:34:45,922 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1734106048, now seen corresponding path program 383 times [2022-03-01 16:34:45,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:45,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924248831] [2022-03-01 16:34:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:46,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:46,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924248831] [2022-03-01 16:34:46,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924248831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:46,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:46,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-01 16:34:46,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224174490] [2022-03-01 16:34:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:46,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:34:46,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:34:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:34:46,324 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:47,900 INFO L93 Difference]: Finished difference Result 1354 states and 3363 transitions. [2022-03-01 16:34:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:34:47,900 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:47,902 INFO L225 Difference]: With dead ends: 1354 [2022-03-01 16:34:47,902 INFO L226 Difference]: Without dead ends: 1219 [2022-03-01 16:34:47,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=306, Invalid=3476, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:34:47,903 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 339 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:47,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2904 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:34:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-01 16:34:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1131. [2022-03-01 16:34:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4982300884955753) internal successors, (2823), 1130 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2823 transitions. [2022-03-01 16:34:47,913 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2823 transitions. Word has length 79 [2022-03-01 16:34:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:47,914 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2823 transitions. [2022-03-01 16:34:47,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2823 transitions. [2022-03-01 16:34:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:47,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:47,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:47,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-03-01 16:34:47,915 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1430346218, now seen corresponding path program 384 times [2022-03-01 16:34:47,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:47,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711549527] [2022-03-01 16:34:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:48,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:48,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711549527] [2022-03-01 16:34:48,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711549527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:48,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:48,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:48,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993045940] [2022-03-01 16:34:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:48,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:48,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:48,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:48,296 INFO L87 Difference]: Start difference. First operand 1131 states and 2823 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:34:49,487 INFO L93 Difference]: Finished difference Result 1357 states and 3365 transitions. [2022-03-01 16:34:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:34:49,487 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-01 16:34:49,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:34:49,489 INFO L225 Difference]: With dead ends: 1357 [2022-03-01 16:34:49,489 INFO L226 Difference]: Without dead ends: 1183 [2022-03-01 16:34:49,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=2818, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:34:49,489 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 301 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:49,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2795 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:34:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-01 16:34:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1115. [2022-03-01 16:34:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4982046678635546) internal successors, (2783), 1114 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2783 transitions. [2022-03-01 16:34:49,499 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2783 transitions. Word has length 79 [2022-03-01 16:34:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:34:49,500 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2783 transitions. [2022-03-01 16:34:49,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2783 transitions. [2022-03-01 16:34:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-01 16:34:49,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:34:49,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:34:49,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-03-01 16:34:49,501 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:34:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:34:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1872036236, now seen corresponding path program 385 times [2022-03-01 16:34:49,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:34:49,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549651335] [2022-03-01 16:34:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:34:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:34:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:34:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:34:49,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:34:49,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549651335] [2022-03-01 16:34:49,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549651335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:34:49,846 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:34:49,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-01 16:34:49,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529201737] [2022-03-01 16:34:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:34:49,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-01 16:34:49,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:34:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-01 16:34:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:34:49,846 INFO L87 Difference]: Start difference. First operand 1115 states and 2783 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:34:52,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-03-01 16:34:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 16:34:52,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:34:52,911 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 214 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:34:52,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1918 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 16:34:52,912 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:34:52,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-03-01 16:34:52,912 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1115states) and FLOYD_HOARE automaton (currently 36 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. [2022-03-01 16:34:52,913 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:34:52,913 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:34:52,915 INFO L732 BasicCegarLoop]: Path program histogram: [385] [2022-03-01 16:34:52,917 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:34:52,917 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:34:52,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:34:52 BasicIcfg [2022-03-01 16:34:52,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:34:52,920 INFO L158 Benchmark]: Toolchain (without parser) took 857142.64ms. Allocated memory was 195.0MB in the beginning and 426.8MB in the end (delta: 231.7MB). Free memory was 139.4MB in the beginning and 379.2MB in the end (delta: -239.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:34:52,920 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:34:52,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.63ms. Allocated memory was 195.0MB in the beginning and 246.4MB in the end (delta: 51.4MB). Free memory was 139.2MB in the beginning and 216.6MB in the end (delta: -77.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-03-01 16:34:52,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.61ms. Allocated memory is still 246.4MB. Free memory was 216.6MB in the beginning and 215.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:34:52,920 INFO L158 Benchmark]: Boogie Preprocessor took 25.63ms. Allocated memory is still 246.4MB. Free memory was 215.0MB in the beginning and 214.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:34:52,921 INFO L158 Benchmark]: RCFGBuilder took 283.19ms. Allocated memory is still 246.4MB. Free memory was 214.0MB in the beginning and 201.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-01 16:34:52,921 INFO L158 Benchmark]: TraceAbstraction took 856591.34ms. Allocated memory was 246.4MB in the beginning and 426.8MB in the end (delta: 180.4MB). Free memory was 201.4MB in the beginning and 379.2MB in the end (delta: -177.9MB). Peak memory consumption was 3.6MB. Max. memory is 8.0GB. [2022-03-01 16:34:52,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:34:52,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 212.63ms. Allocated memory was 195.0MB in the beginning and 246.4MB in the end (delta: 51.4MB). Free memory was 139.2MB in the beginning and 216.6MB in the end (delta: -77.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.61ms. Allocated memory is still 246.4MB. Free memory was 216.6MB in the beginning and 215.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.63ms. Allocated memory is still 246.4MB. Free memory was 215.0MB in the beginning and 214.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 283.19ms. Allocated memory is still 246.4MB. Free memory was 214.0MB in the beginning and 201.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 856591.34ms. Allocated memory was 246.4MB in the beginning and 426.8MB in the end (delta: 180.4MB). Free memory was 201.4MB in the beginning and 379.2MB in the end (delta: -177.9MB). Peak memory consumption was 3.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (1115states) and FLOYD_HOARE automaton (currently 36 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1115states) and FLOYD_HOARE automaton (currently 36 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1115states) and FLOYD_HOARE automaton (currently 36 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 856.5s, OverallIterations: 385, TraceHistogramMax: 1, PathProgramHistogramMax: 385, EmptinessCheckTime: 0.5s, AutomataDifference: 714.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 mSolverCounterUnknown, 119460 SdHoareTripleChecker+Valid, 470.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119460 mSDsluCounter, 1042623 SdHoareTripleChecker+Invalid, 439.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1023116 mSDsCounter, 13725 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401658 IncrementalHoareTripleChecker+Invalid, 415429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13725 mSolverCounterUnsat, 69690 mSDtfsCounter, 401658 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21054 GetRequests, 798 SyntacticMatches, 1006 SemanticMatches, 19249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216426 ImplicationChecksByTransitivity, 326.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1239occurred in iteration=329, InterpolantAutomatonStates: 16007, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 384 MinimizatonAttempts, 37171 StatesRemovedByMinimization, 381 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 131.5s InterpolantComputationTime, 30415 NumberOfCodeBlocks, 30415 NumberOfCodeBlocksAsserted, 385 NumberOfCheckSat, 30030 ConstructedInterpolants, 0 QuantifiedInterpolants, 376645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 385 InterpolantComputations, 385 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown