/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 [2022-03-03 17:51:31,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:51:31,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:51:31,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:51:31,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:51:31,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:51:31,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:51:31,780 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 [2022-03-03 17:51:31,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:51:31,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:51:31,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:51:31,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:51:31,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:51:31,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:51:31,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:51:31,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:51:31,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:51:31,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:51:31,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:51:31,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:51:31,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:51:31,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:51:31,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:51:31,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:51:31,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:51:31,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:51:31,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:51:32,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:51:32,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:51:32,003 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:51:32,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-03 17:51:32,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605b1c29c/6e2894254286417689a10f58114e4ac8/FLAG33e093f8d [2022-03-03 17:51:32,375 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:51:32,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-03 17:51:32,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605b1c29c/6e2894254286417689a10f58114e4ac8/FLAG33e093f8d [2022-03-03 17:51:32,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605b1c29c/6e2894254286417689a10f58114e4ac8 [2022-03-03 17:51:32,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:51:32,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:51:32,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:51:32,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:51:32,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:51:32,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:51:32" (1/1) ... [2022-03-03 17:51:32,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b84a7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:32, skipping insertion in model container [2022-03-03 17:51:32,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:51:32" (1/1) ... [2022-03-03 17:51:32,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:51:32,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:51:32,979 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] [2022-03-03 17:51:32,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:51:32,986 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:51:33,002 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] [2022-03-03 17:51:33,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:51:33,018 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:51:33,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33 WrapperNode [2022-03-03 17:51:33,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:51:33,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:51:33,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:51:33,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:51:33,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,087 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-03-03 17:51:33,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:51:33,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:51:33,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:51:33,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:51:33,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:51:33,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:51:33,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:51:33,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:51:33,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (1/1) ... [2022-03-03 17:51:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:51:33,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:33,157 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) [2022-03-03 17:51:33,183 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 [2022-03-03 17:51:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:51:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:51:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:51:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:51:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:51:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:51:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:51:33,207 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:51:33,266 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:51:33,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:51:33,394 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:51:33,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:51:33,400 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 17:51:33,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:51:33 BoogieIcfgContainer [2022-03-03 17:51:33,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:51:33,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:51:33,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:51:33,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:51:33,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:51:32" (1/3) ... [2022-03-03 17:51:33,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:51:33, skipping insertion in model container [2022-03-03 17:51:33,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:33" (2/3) ... [2022-03-03 17:51:33,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:51:33, skipping insertion in model container [2022-03-03 17:51:33,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:51:33" (3/3) ... [2022-03-03 17:51:33,409 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-03-03 17:51:33,413 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:51:33,413 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:51:33,413 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:51:33,413 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:51:33,465 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,475 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,476 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,476 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,476 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,476 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,478 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,478 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,478 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,478 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,478 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,479 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,480 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,480 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,480 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,481 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,481 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,481 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,482 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,482 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,482 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,482 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,482 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,483 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,485 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,486 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,486 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,486 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,487 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,487 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,487 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,489 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,489 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,489 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,490 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,490 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,490 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,490 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,494 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,494 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,495 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,495 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,495 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,495 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,499 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,499 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,499 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,499 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,500 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,500 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:33,508 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:51:33,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:51:33,550 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 [2022-03-03 17:51:33,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:51:33,560 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 94 transitions, 204 flow [2022-03-03 17:51:33,655 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) [2022-03-03 17:51:33,660 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) [2022-03-03 17:51:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:33,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:33,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:33,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395040, now seen corresponding path program 1 times [2022-03-03 17:51:33,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:33,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834454330] [2022-03-03 17:51:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:34,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:34,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834454330] [2022-03-03 17:51:34,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834454330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:34,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:34,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:34,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116236125] [2022-03-03 17:51:34,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:34,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:34,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:34,920 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) [2022-03-03 17:51:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:36,267 INFO L93 Difference]: Finished difference Result 1343 states and 3319 transitions. [2022-03-03 17:51:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:51:36,269 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 [2022-03-03 17:51:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:36,285 INFO L225 Difference]: With dead ends: 1343 [2022-03-03 17:51:36,285 INFO L226 Difference]: Without dead ends: 1210 [2022-03-03 17:51:36,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:51:36,290 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:36,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2241 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:51:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-03 17:51:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2022-03-03 17:51:36,379 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) [2022-03-03 17:51:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2867 transitions. [2022-03-03 17:51:36,384 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2867 transitions. Word has length 79 [2022-03-03 17:51:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:36,385 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2867 transitions. [2022-03-03 17:51:36,385 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) [2022-03-03 17:51:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2867 transitions. [2022-03-03 17:51:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:36,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:36,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:36,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:51:36,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1423500610, now seen corresponding path program 2 times [2022-03-03 17:51:36,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:36,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281991134] [2022-03-03 17:51:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:36,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:36,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281991134] [2022-03-03 17:51:36,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281991134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:36,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:36,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:36,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821105884] [2022-03-03 17:51:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:36,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:36,956 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) [2022-03-03 17:51:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:38,139 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-03-03 17:51:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:51:38,139 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 [2022-03-03 17:51:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:38,145 INFO L225 Difference]: With dead ends: 1335 [2022-03-03 17:51:38,146 INFO L226 Difference]: Without dead ends: 1237 [2022-03-03 17:51:38,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:51:38,148 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:38,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2439 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:51:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-03 17:51:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1158. [2022-03-03 17:51:38,177 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) [2022-03-03 17:51:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2874 transitions. [2022-03-03 17:51:38,182 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2874 transitions. Word has length 79 [2022-03-03 17:51:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:38,184 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2874 transitions. [2022-03-03 17:51:38,185 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) [2022-03-03 17:51:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2874 transitions. [2022-03-03 17:51:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:38,188 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:38,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:38,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:51:38,189 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2137737888, now seen corresponding path program 3 times [2022-03-03 17:51:38,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:38,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810684585] [2022-03-03 17:51:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:38,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:38,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:38,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810684585] [2022-03-03 17:51:38,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810684585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:38,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:38,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:38,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43907075] [2022-03-03 17:51:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:38,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:38,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:38,717 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) [2022-03-03 17:51:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:39,836 INFO L93 Difference]: Finished difference Result 1303 states and 3212 transitions. [2022-03-03 17:51:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:51:39,840 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 [2022-03-03 17:51:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:39,845 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 17:51:39,846 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 17:51:39,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:51:39,847 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 277 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:39,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2614 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:51:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 17:51:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1146. [2022-03-03 17:51:39,872 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) [2022-03-03 17:51:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2845 transitions. [2022-03-03 17:51:39,877 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2845 transitions. Word has length 79 [2022-03-03 17:51:39,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:39,877 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2845 transitions. [2022-03-03 17:51:39,877 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) [2022-03-03 17:51:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2845 transitions. [2022-03-03 17:51:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:39,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:39,880 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] [2022-03-03 17:51:39,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:51:39,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1686538594, now seen corresponding path program 4 times [2022-03-03 17:51:39,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:39,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581137334] [2022-03-03 17:51:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:40,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:40,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581137334] [2022-03-03 17:51:40,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581137334] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:40,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:40,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:40,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161932043] [2022-03-03 17:51:40,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:40,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:40,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:40,333 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) [2022-03-03 17:51:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:41,517 INFO L93 Difference]: Finished difference Result 1353 states and 3337 transitions. [2022-03-03 17:51:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:51:41,518 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 [2022-03-03 17:51:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:41,525 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 17:51:41,525 INFO L226 Difference]: Without dead ends: 1255 [2022-03-03 17:51:41,526 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 [2022-03-03 17:51:41,535 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 266 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:41,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2743 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:51:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-03 17:51:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1170. [2022-03-03 17:51:41,560 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) [2022-03-03 17:51:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-03-03 17:51:41,564 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-03-03 17:51:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:41,565 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-03-03 17:51:41,565 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) [2022-03-03 17:51:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-03-03 17:51:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:41,568 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:41,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:41,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:51:41,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -370005702, now seen corresponding path program 5 times [2022-03-03 17:51:41,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:41,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275962935] [2022-03-03 17:51:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:41,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:41,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275962935] [2022-03-03 17:51:41,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275962935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:41,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:41,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:41,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330248528] [2022-03-03 17:51:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:41,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:41,992 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) [2022-03-03 17:51:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:42,963 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-03-03 17:51:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:51:42,963 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 [2022-03-03 17:51:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:42,968 INFO L225 Difference]: With dead ends: 1321 [2022-03-03 17:51:42,969 INFO L226 Difference]: Without dead ends: 1170 [2022-03-03 17:51:42,969 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 [2022-03-03 17:51:42,970 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:42,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2713 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:51:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-03 17:51:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1130. [2022-03-03 17:51:42,992 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) [2022-03-03 17:51:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2801 transitions. [2022-03-03 17:51:42,996 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2801 transitions. Word has length 79 [2022-03-03 17:51:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:42,996 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2801 transitions. [2022-03-03 17:51:42,997 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) [2022-03-03 17:51:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2801 transitions. [2022-03-03 17:51:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:42,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:42,999 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] [2022-03-03 17:51:43,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:51:43,000 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1723463452, now seen corresponding path program 6 times [2022-03-03 17:51:43,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:43,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811191214] [2022-03-03 17:51:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:43,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:43,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:43,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811191214] [2022-03-03 17:51:43,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811191214] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:43,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:43,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:51:43,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893255450] [2022-03-03 17:51:43,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:43,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:43,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:43,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:43,393 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) [2022-03-03 17:51:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:44,830 INFO L93 Difference]: Finished difference Result 1388 states and 3423 transitions. [2022-03-03 17:51:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:51:44,831 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 [2022-03-03 17:51:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:44,836 INFO L225 Difference]: With dead ends: 1388 [2022-03-03 17:51:44,836 INFO L226 Difference]: Without dead ends: 1290 [2022-03-03 17:51:44,837 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 [2022-03-03 17:51:44,837 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 310 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:44,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2749 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:51:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-03 17:51:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2022-03-03 17:51:44,864 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) [2022-03-03 17:51:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-03 17:51:44,868 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-03 17:51:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-03 17:51:44,869 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) [2022-03-03 17:51:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-03 17:51:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:44,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:44,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:44,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:51:44,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1254970952, now seen corresponding path program 7 times [2022-03-03 17:51:44,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:44,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334157885] [2022-03-03 17:51:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:45,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:45,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334157885] [2022-03-03 17:51:45,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334157885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:45,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:45,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:51:45,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050783640] [2022-03-03 17:51:45,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:45,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:45,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:45,277 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) [2022-03-03 17:51:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:46,436 INFO L93 Difference]: Finished difference Result 1344 states and 3306 transitions. [2022-03-03 17:51:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:51:46,436 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 [2022-03-03 17:51:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:46,442 INFO L225 Difference]: With dead ends: 1344 [2022-03-03 17:51:46,442 INFO L226 Difference]: Without dead ends: 1209 [2022-03-03 17:51:46,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:51:46,443 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 [2022-03-03 17:51:46,443 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] [2022-03-03 17:51:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-03-03 17:51:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1134. [2022-03-03 17:51:46,464 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) [2022-03-03 17:51:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-03-03 17:51:46,467 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-03-03 17:51:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:46,467 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-03-03 17:51:46,468 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) [2022-03-03 17:51:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-03-03 17:51:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:46,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:46,470 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] [2022-03-03 17:51:46,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 17:51:46,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1909481314, now seen corresponding path program 8 times [2022-03-03 17:51:46,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:46,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168076216] [2022-03-03 17:51:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:46,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:46,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168076216] [2022-03-03 17:51:46,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168076216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:46,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:46,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:46,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604978887] [2022-03-03 17:51:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:46,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:46,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:46,878 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) [2022-03-03 17:51:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:47,780 INFO L93 Difference]: Finished difference Result 1332 states and 3273 transitions. [2022-03-03 17:51:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:51:47,780 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 [2022-03-03 17:51:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:47,785 INFO L225 Difference]: With dead ends: 1332 [2022-03-03 17:51:47,785 INFO L226 Difference]: Without dead ends: 1162 [2022-03-03 17:51:47,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:51:47,787 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 [2022-03-03 17:51:47,787 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] [2022-03-03 17:51:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-03 17:51:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1122. [2022-03-03 17:51:47,807 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) [2022-03-03 17:51:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2779 transitions. [2022-03-03 17:51:47,810 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2779 transitions. Word has length 79 [2022-03-03 17:51:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:47,810 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2779 transitions. [2022-03-03 17:51:47,810 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) [2022-03-03 17:51:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2779 transitions. [2022-03-03 17:51:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:47,813 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:47,813 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] [2022-03-03 17:51:47,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:51:47,813 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1410763300, now seen corresponding path program 9 times [2022-03-03 17:51:47,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:47,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261876167] [2022-03-03 17:51:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:48,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:48,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261876167] [2022-03-03 17:51:48,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261876167] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:48,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:48,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:51:48,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587160599] [2022-03-03 17:51:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:48,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:48,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:48,212 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) [2022-03-03 17:51:51,316 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 [] [2022-03-03 17:51:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:51,569 INFO L93 Difference]: Finished difference Result 1466 states and 3579 transitions. [2022-03-03 17:51:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:51:51,569 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 [2022-03-03 17:51:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:51,574 INFO L225 Difference]: With dead ends: 1466 [2022-03-03 17:51:51,574 INFO L226 Difference]: Without dead ends: 1368 [2022-03-03 17:51:51,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2231, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:51:51,575 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 367 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:51,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2802 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 17:51:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2022-03-03 17:51:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1146. [2022-03-03 17:51:51,595 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) [2022-03-03 17:51:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2841 transitions. [2022-03-03 17:51:51,598 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2841 transitions. Word has length 79 [2022-03-03 17:51:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:51,598 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2841 transitions. [2022-03-03 17:51:51,598 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) [2022-03-03 17:51:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2841 transitions. [2022-03-03 17:51:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:51,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:51,601 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] [2022-03-03 17:51:51,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:51:51,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2125000578, now seen corresponding path program 10 times [2022-03-03 17:51:51,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:51,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349289457] [2022-03-03 17:51:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:52,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:52,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349289457] [2022-03-03 17:51:52,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349289457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:52,027 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:52,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:51:52,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556727774] [2022-03-03 17:51:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:52,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:52,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:52,028 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) [2022-03-03 17:51:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:53,295 INFO L93 Difference]: Finished difference Result 1370 states and 3365 transitions. [2022-03-03 17:51:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:51:53,295 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 [2022-03-03 17:51:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:53,299 INFO L225 Difference]: With dead ends: 1370 [2022-03-03 17:51:53,299 INFO L226 Difference]: Without dead ends: 1219 [2022-03-03 17:51:53,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:51:53,301 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 333 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:53,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2771 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:51:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-03 17:51:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1146. [2022-03-03 17:51:53,319 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) [2022-03-03 17:51:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-03-03 17:51:53,322 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-03-03 17:51:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:53,322 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-03-03 17:51:53,322 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) [2022-03-03 17:51:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-03-03 17:51:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:53,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:53,325 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] [2022-03-03 17:51:53,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 17:51:53,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:53,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1359290628, now seen corresponding path program 11 times [2022-03-03 17:51:53,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:53,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477242228] [2022-03-03 17:51:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:53,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:53,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:53,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477242228] [2022-03-03 17:51:53,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477242228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:53,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:53,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:51:53,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915192953] [2022-03-03 17:51:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:53,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:51:53,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:51:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:53,722 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) [2022-03-03 17:51:54,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:54,593 INFO L93 Difference]: Finished difference Result 1330 states and 3255 transitions. [2022-03-03 17:51:54,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:51:54,593 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 [2022-03-03 17:51:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:54,597 INFO L225 Difference]: With dead ends: 1330 [2022-03-03 17:51:54,597 INFO L226 Difference]: Without dead ends: 1134 [2022-03-03 17:51:54,598 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 [2022-03-03 17:51:54,598 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 [2022-03-03 17:51:54,598 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] [2022-03-03 17:51:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-03-03 17:51:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1106. [2022-03-03 17:51:54,616 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) [2022-03-03 17:51:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 2735 transitions. [2022-03-03 17:51:54,618 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 2735 transitions. Word has length 79 [2022-03-03 17:51:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:54,618 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 2735 transitions. [2022-03-03 17:51:54,619 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) [2022-03-03 17:51:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 2735 transitions. [2022-03-03 17:51:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:54,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:54,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:54,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 17:51:54,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 713450852, now seen corresponding path program 12 times [2022-03-03 17:51:54,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:54,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598170263] [2022-03-03 17:51:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:55,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:55,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598170263] [2022-03-03 17:51:55,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598170263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:55,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:55,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:51:55,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129069365] [2022-03-03 17:51:55,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:55,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:51:55,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:51:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:55,049 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) [2022-03-03 17:51:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:56,502 INFO L93 Difference]: Finished difference Result 1433 states and 3528 transitions. [2022-03-03 17:51:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:51:56,502 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 [2022-03-03 17:51:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:56,507 INFO L225 Difference]: With dead ends: 1433 [2022-03-03 17:51:56,507 INFO L226 Difference]: Without dead ends: 1335 [2022-03-03 17:51:56,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2836, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:51:56,509 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 344 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:56,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 3226 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:51:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-03-03 17:51:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2022-03-03 17:51:56,528 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) [2022-03-03 17:51:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-03 17:51:56,530 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-03 17:51:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:56,530 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-03 17:51:56,530 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) [2022-03-03 17:51:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-03 17:51:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:56,533 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:56,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:56,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 17:51:56,533 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2029983744, now seen corresponding path program 13 times [2022-03-03 17:51:56,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:56,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276711982] [2022-03-03 17:51:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:56,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:56,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:56,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276711982] [2022-03-03 17:51:56,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276711982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:56,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:56,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:51:56,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072748484] [2022-03-03 17:51:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:56,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:51:56,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:51:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:56,945 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) [2022-03-03 17:51:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:58,599 INFO L93 Difference]: Finished difference Result 1389 states and 3411 transitions. [2022-03-03 17:51:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:51:58,599 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 [2022-03-03 17:51:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:58,603 INFO L225 Difference]: With dead ends: 1389 [2022-03-03 17:51:58,603 INFO L226 Difference]: Without dead ends: 1254 [2022-03-03 17:51:58,604 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 [2022-03-03 17:51:58,604 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 [2022-03-03 17:51:58,605 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] [2022-03-03 17:51:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-03 17:51:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1134. [2022-03-03 17:51:58,622 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) [2022-03-03 17:51:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-03 17:51:58,625 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-03 17:51:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:58,625 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-03 17:51:58,625 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) [2022-03-03 17:51:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-03 17:51:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:51:58,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:58,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:58,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 17:51:58,628 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 661978180, now seen corresponding path program 14 times [2022-03-03 17:51:58,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:58,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915340531] [2022-03-03 17:51:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:59,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:59,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915340531] [2022-03-03 17:51:59,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915340531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:59,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:59,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:51:59,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968145525] [2022-03-03 17:51:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:59,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:51:59,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:51:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:59,013 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) [2022-03-03 17:52:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:00,072 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-03 17:52:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:52:00,072 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 [2022-03-03 17:52:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:00,076 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 17:52:00,076 INFO L226 Difference]: Without dead ends: 1173 [2022-03-03 17:52:00,077 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 [2022-03-03 17:52:00,077 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 334 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-03 17:52:00,078 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] [2022-03-03 17:52:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-03 17:52:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1110. [2022-03-03 17:52:00,094 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) [2022-03-03 17:52:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2742 transitions. [2022-03-03 17:52:00,096 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2742 transitions. Word has length 79 [2022-03-03 17:52:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:00,096 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2742 transitions. [2022-03-03 17:52:00,096 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) [2022-03-03 17:52:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2742 transitions. [2022-03-03 17:52:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:00,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:00,099 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] [2022-03-03 17:52:00,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 17:52:00,099 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:00,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1647496996, now seen corresponding path program 15 times [2022-03-03 17:52:00,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:00,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955223551] [2022-03-03 17:52:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:00,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:00,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955223551] [2022-03-03 17:52:00,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955223551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:00,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:00,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:52:00,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677918080] [2022-03-03 17:52:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:00,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:52:00,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:52:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:52:00,522 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) [2022-03-03 17:52:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:01,405 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-03 17:52:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:52:01,406 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 [2022-03-03 17:52:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:01,410 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 17:52:01,410 INFO L226 Difference]: Without dead ends: 1126 [2022-03-03 17:52:01,411 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 [2022-03-03 17:52:01,411 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 [2022-03-03 17:52:01,411 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] [2022-03-03 17:52:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-03-03 17:52:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2022-03-03 17:52:01,426 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) [2022-03-03 17:52:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2713 transitions. [2022-03-03 17:52:01,429 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2713 transitions. Word has length 79 [2022-03-03 17:52:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:01,429 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 2713 transitions. [2022-03-03 17:52:01,429 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) [2022-03-03 17:52:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2713 transitions. [2022-03-03 17:52:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:01,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:01,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:01,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 17:52:01,432 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash -179617636, now seen corresponding path program 16 times [2022-03-03 17:52:01,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:01,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613766016] [2022-03-03 17:52:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:01,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:01,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613766016] [2022-03-03 17:52:01,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613766016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:01,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:01,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:52:01,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347815960] [2022-03-03 17:52:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:01,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:52:01,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:52:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:52:01,820 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) [2022-03-03 17:52:04,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:52:07,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:52:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:07,738 INFO L93 Difference]: Finished difference Result 1499 states and 3651 transitions. [2022-03-03 17:52:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:52:07,738 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 [2022-03-03 17:52:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:07,742 INFO L225 Difference]: With dead ends: 1499 [2022-03-03 17:52:07,743 INFO L226 Difference]: Without dead ends: 1401 [2022-03-03 17:52:07,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:52:07,744 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 376 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:07,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3286 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1266 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-03-03 17:52:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2022-03-03 17:52:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1134. [2022-03-03 17:52:07,759 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) [2022-03-03 17:52:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-03-03 17:52:07,761 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-03-03 17:52:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:07,762 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-03-03 17:52:07,762 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) [2022-03-03 17:52:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-03-03 17:52:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:07,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:07,764 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] [2022-03-03 17:52:07,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 17:52:07,764 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:07,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:07,765 INFO L85 PathProgramCache]: Analyzing trace with hash 534619642, now seen corresponding path program 17 times [2022-03-03 17:52:07,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:07,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513881980] [2022-03-03 17:52:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:08,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:08,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513881980] [2022-03-03 17:52:08,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513881980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:08,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:08,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:52:08,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212789956] [2022-03-03 17:52:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:08,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:52:08,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:52:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:52:08,188 INFO L87 Difference]: Start difference. First operand 1134 states and 2808 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) [2022-03-03 17:52:10,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:52:12,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:52:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:13,199 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-03 17:52:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:52:13,199 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 [2022-03-03 17:52:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:13,203 INFO L225 Difference]: With dead ends: 1419 [2022-03-03 17:52:13,204 INFO L226 Difference]: Without dead ends: 1268 [2022-03-03 17:52:13,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=240, Invalid=2730, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:52:13,205 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 374 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:13,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2935 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1148 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-03 17:52:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-03-03 17:52:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1122. [2022-03-03 17:52:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 2.4754683318465656) internal successors, (2775), 1121 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) [2022-03-03 17:52:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2775 transitions. [2022-03-03 17:52:13,224 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2775 transitions. Word has length 79 [2022-03-03 17:52:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2775 transitions. [2022-03-03 17:52:13,224 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) [2022-03-03 17:52:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2775 transitions. [2022-03-03 17:52:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:13,226 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:13,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:13,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-03 17:52:13,227 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash 6400226, now seen corresponding path program 18 times [2022-03-03 17:52:13,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:13,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056334987] [2022-03-03 17:52:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:13,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:13,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:13,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056334987] [2022-03-03 17:52:13,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056334987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:13,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:13,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:52:13,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608949619] [2022-03-03 17:52:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:13,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:52:13,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:52:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:52:13,627 INFO L87 Difference]: Start difference. First operand 1122 states and 2775 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) [2022-03-03 17:52:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:14,735 INFO L93 Difference]: Finished difference Result 1391 states and 3404 transitions. [2022-03-03 17:52:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:52:14,735 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 [2022-03-03 17:52:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:14,737 INFO L225 Difference]: With dead ends: 1391 [2022-03-03 17:52:14,738 INFO L226 Difference]: Without dead ends: 1183 [2022-03-03 17:52:14,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=2066, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:52:14,739 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 343 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:14,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2879 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-03 17:52:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1122. [2022-03-03 17:52:14,753 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) [2022-03-03 17:52:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2771 transitions. [2022-03-03 17:52:14,756 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2771 transitions. Word has length 79 [2022-03-03 17:52:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:14,756 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2771 transitions. [2022-03-03 17:52:14,756 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) [2022-03-03 17:52:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2771 transitions. [2022-03-03 17:52:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:14,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:14,758 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] [2022-03-03 17:52:14,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-03 17:52:14,758 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash 959444536, now seen corresponding path program 19 times [2022-03-03 17:52:14,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:14,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354048482] [2022-03-03 17:52:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:15,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:15,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354048482] [2022-03-03 17:52:15,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354048482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:15,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:15,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:52:15,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729673955] [2022-03-03 17:52:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:15,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:52:15,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:52:15,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:52:15,156 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) [2022-03-03 17:52:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:16,050 INFO L93 Difference]: Finished difference Result 1339 states and 3261 transitions. [2022-03-03 17:52:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:52:16,050 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 [2022-03-03 17:52:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:16,052 INFO L225 Difference]: With dead ends: 1339 [2022-03-03 17:52:16,052 INFO L226 Difference]: Without dead ends: 1098 [2022-03-03 17:52:16,053 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 [2022-03-03 17:52:16,053 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 284 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:16,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2915 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-03 17:52:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1082. [2022-03-03 17:52:16,067 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) [2022-03-03 17:52:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2669 transitions. [2022-03-03 17:52:16,069 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2669 transitions. Word has length 79 [2022-03-03 17:52:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:16,070 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 2669 transitions. [2022-03-03 17:52:16,070 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) [2022-03-03 17:52:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2669 transitions. [2022-03-03 17:52:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:16,072 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:16,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:16,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-03 17:52:16,072 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:16,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 159266140, now seen corresponding path program 20 times [2022-03-03 17:52:16,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:16,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553386932] [2022-03-03 17:52:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:16,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:16,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:16,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553386932] [2022-03-03 17:52:16,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553386932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:16,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:16,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:16,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031151245] [2022-03-03 17:52:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:16,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:16,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:16,498 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) [2022-03-03 17:52:19,503 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 [] [2022-03-03 17:52:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:20,266 INFO L93 Difference]: Finished difference Result 1463 states and 3598 transitions. [2022-03-03 17:52:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:52:20,268 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 [2022-03-03 17:52:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:20,271 INFO L225 Difference]: With dead ends: 1463 [2022-03-03 17:52:20,271 INFO L226 Difference]: Without dead ends: 1365 [2022-03-03 17:52:20,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=3513, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:52:20,272 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 360 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:20,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 3605 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1409 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 17:52:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-03-03 17:52:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1158. [2022-03-03 17:52:20,289 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) [2022-03-03 17:52:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-03 17:52:20,292 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-03 17:52:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:20,292 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-03 17:52:20,292 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) [2022-03-03 17:52:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-03 17:52:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:20,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:20,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:20,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-03 17:52:20,294 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1475799032, now seen corresponding path program 21 times [2022-03-03 17:52:20,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:20,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645713549] [2022-03-03 17:52:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:20,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:20,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645713549] [2022-03-03 17:52:20,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645713549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:20,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:20,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:20,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301555073] [2022-03-03 17:52:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:20,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:20,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:20,714 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) [2022-03-03 17:52:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:23,004 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-03 17:52:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:52:23,005 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 [2022-03-03 17:52:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:23,007 INFO L225 Difference]: With dead ends: 1419 [2022-03-03 17:52:23,007 INFO L226 Difference]: Without dead ends: 1284 [2022-03-03 17:52:23,008 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 [2022-03-03 17:52:23,008 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 372 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:23,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 3274 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:52:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-03-03 17:52:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1134. [2022-03-03 17:52:23,023 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) [2022-03-03 17:52:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-03 17:52:23,025 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-03 17:52:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:23,025 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-03 17:52:23,025 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) [2022-03-03 17:52:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-03 17:52:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:23,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:23,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:23,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 17:52:23,028 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 107793468, now seen corresponding path program 22 times [2022-03-03 17:52:23,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:23,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933425300] [2022-03-03 17:52:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:23,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:23,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933425300] [2022-03-03 17:52:23,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933425300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:23,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:23,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:52:23,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960795474] [2022-03-03 17:52:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:23,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:52:23,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:52:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:52:23,378 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) [2022-03-03 17:52:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:25,171 INFO L93 Difference]: Finished difference Result 1383 states and 3382 transitions. [2022-03-03 17:52:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:52:25,171 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 [2022-03-03 17:52:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:25,173 INFO L225 Difference]: With dead ends: 1383 [2022-03-03 17:52:25,173 INFO L226 Difference]: Without dead ends: 1203 [2022-03-03 17:52:25,174 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 [2022-03-03 17:52:25,174 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 331 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:25,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3183 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:52:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-03 17:52:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1110. [2022-03-03 17:52:25,185 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) [2022-03-03 17:52:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2738 transitions. [2022-03-03 17:52:25,187 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2738 transitions. Word has length 79 [2022-03-03 17:52:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:25,187 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2738 transitions. [2022-03-03 17:52:25,187 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) [2022-03-03 17:52:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2738 transitions. [2022-03-03 17:52:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:25,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:25,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:25,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-03 17:52:25,190 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1298328312, now seen corresponding path program 23 times [2022-03-03 17:52:25,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:25,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094330864] [2022-03-03 17:52:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:25,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:25,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094330864] [2022-03-03 17:52:25,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094330864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:25,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:25,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:52:25,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574435013] [2022-03-03 17:52:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:25,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:52:25,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:25,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:52:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:52:25,544 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) [2022-03-03 17:52:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:26,575 INFO L93 Difference]: Finished difference Result 1347 states and 3283 transitions. [2022-03-03 17:52:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:52:26,575 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 [2022-03-03 17:52:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:26,577 INFO L225 Difference]: With dead ends: 1347 [2022-03-03 17:52:26,577 INFO L226 Difference]: Without dead ends: 1122 [2022-03-03 17:52:26,577 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 [2022-03-03 17:52:26,578 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:26,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2793 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-03-03 17:52:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1086. [2022-03-03 17:52:26,592 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) [2022-03-03 17:52:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2676 transitions. [2022-03-03 17:52:26,594 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2676 transitions. Word has length 79 [2022-03-03 17:52:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:26,594 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2676 transitions. [2022-03-03 17:52:26,595 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) [2022-03-03 17:52:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2676 transitions. [2022-03-03 17:52:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:26,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:26,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:26,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-03 17:52:26,597 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2146679560, now seen corresponding path program 24 times [2022-03-03 17:52:26,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:26,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017356882] [2022-03-03 17:52:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:26,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:26,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017356882] [2022-03-03 17:52:26,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017356882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:26,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:26,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:52:26,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297536362] [2022-03-03 17:52:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:26,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:52:26,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:52:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:52:26,945 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) [2022-03-03 17:52:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:27,793 INFO L93 Difference]: Finished difference Result 1374 states and 3351 transitions. [2022-03-03 17:52:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:52:27,793 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 [2022-03-03 17:52:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:27,796 INFO L225 Difference]: With dead ends: 1374 [2022-03-03 17:52:27,796 INFO L226 Difference]: Without dead ends: 1090 [2022-03-03 17:52:27,796 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 [2022-03-03 17:52:27,797 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 301 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:27,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2892 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-03-03 17:52:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1074. [2022-03-03 17:52:27,822 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) [2022-03-03 17:52:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2647 transitions. [2022-03-03 17:52:27,824 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2647 transitions. Word has length 79 [2022-03-03 17:52:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2647 transitions. [2022-03-03 17:52:27,824 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) [2022-03-03 17:52:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2647 transitions. [2022-03-03 17:52:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:27,826 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:27,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:27,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-03 17:52:27,827 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1699775516, now seen corresponding path program 25 times [2022-03-03 17:52:27,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:27,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779523500] [2022-03-03 17:52:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:28,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:28,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779523500] [2022-03-03 17:52:28,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779523500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:28,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:28,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:28,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052152306] [2022-03-03 17:52:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:28,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:28,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:28,257 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) [2022-03-03 17:52:33,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:52:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:34,353 INFO L93 Difference]: Finished difference Result 1439 states and 3532 transitions. [2022-03-03 17:52:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:52:34,353 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 [2022-03-03 17:52:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:34,356 INFO L225 Difference]: With dead ends: 1439 [2022-03-03 17:52:34,356 INFO L226 Difference]: Without dead ends: 1341 [2022-03-03 17:52:34,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:52:34,357 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 395 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:34,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3175 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1270 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-03-03 17:52:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-03-03 17:52:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1150. [2022-03-03 17:52:34,372 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) [2022-03-03 17:52:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 2848 transitions. [2022-03-03 17:52:34,374 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 2848 transitions. Word has length 79 [2022-03-03 17:52:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:34,374 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 2848 transitions. [2022-03-03 17:52:34,374 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) [2022-03-03 17:52:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 2848 transitions. [2022-03-03 17:52:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:34,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:34,377 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] [2022-03-03 17:52:34,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-03 17:52:34,377 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash -383242624, now seen corresponding path program 26 times [2022-03-03 17:52:34,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:34,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14069372] [2022-03-03 17:52:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:34,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:34,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14069372] [2022-03-03 17:52:34,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14069372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:34,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:34,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:34,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940342454] [2022-03-03 17:52:34,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:34,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:34,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:34,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:34,834 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) [2022-03-03 17:52:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:36,891 INFO L93 Difference]: Finished difference Result 1395 states and 3415 transitions. [2022-03-03 17:52:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:52:36,892 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 [2022-03-03 17:52:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:36,894 INFO L225 Difference]: With dead ends: 1395 [2022-03-03 17:52:36,894 INFO L226 Difference]: Without dead ends: 1260 [2022-03-03 17:52:36,895 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 [2022-03-03 17:52:36,895 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 365 mSDsluCounter, 3678 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:36,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 3638 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:52:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-03-03 17:52:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1126. [2022-03-03 17:52:36,911 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) [2022-03-03 17:52:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2782 transitions. [2022-03-03 17:52:36,913 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2782 transitions. Word has length 79 [2022-03-03 17:52:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:36,913 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 2782 transitions. [2022-03-03 17:52:36,913 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) [2022-03-03 17:52:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2782 transitions. [2022-03-03 17:52:36,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:36,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:36,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:36,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-03 17:52:36,916 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1751248188, now seen corresponding path program 27 times [2022-03-03 17:52:36,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:36,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918807859] [2022-03-03 17:52:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:37,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:37,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918807859] [2022-03-03 17:52:37,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918807859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:37,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:37,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:52:37,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020743283] [2022-03-03 17:52:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:37,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:52:37,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:52:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:52:37,330 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) [2022-03-03 17:52:40,049 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 [] [2022-03-03 17:52:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:40,496 INFO L93 Difference]: Finished difference Result 1359 states and 3316 transitions. [2022-03-03 17:52:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:52:40,497 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 [2022-03-03 17:52:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:40,499 INFO L225 Difference]: With dead ends: 1359 [2022-03-03 17:52:40,499 INFO L226 Difference]: Without dead ends: 1179 [2022-03-03 17:52:40,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:52:40,500 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 329 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:40,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3097 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1141 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-03 17:52:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-03-03 17:52:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1102. [2022-03-03 17:52:40,513 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) [2022-03-03 17:52:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2716 transitions. [2022-03-03 17:52:40,515 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2716 transitions. Word has length 79 [2022-03-03 17:52:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:40,515 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 2716 transitions. [2022-03-03 17:52:40,515 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) [2022-03-03 17:52:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2716 transitions. [2022-03-03 17:52:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:40,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:40,517 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] [2022-03-03 17:52:40,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-03 17:52:40,518 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash -560713344, now seen corresponding path program 28 times [2022-03-03 17:52:40,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:40,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799766337] [2022-03-03 17:52:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:40,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:40,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799766337] [2022-03-03 17:52:40,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799766337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:40,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:40,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:52:40,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976215001] [2022-03-03 17:52:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:40,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:52:40,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:52:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:52:40,918 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) [2022-03-03 17:52:43,914 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 [] [2022-03-03 17:52:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:44,083 INFO L93 Difference]: Finished difference Result 1323 states and 3217 transitions. [2022-03-03 17:52:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:52:44,083 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 [2022-03-03 17:52:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:44,086 INFO L225 Difference]: With dead ends: 1323 [2022-03-03 17:52:44,086 INFO L226 Difference]: Without dead ends: 1098 [2022-03-03 17:52:44,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:52:44,087 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 329 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:44,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2852 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1010 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 17:52:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-03 17:52:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2022-03-03 17:52:44,101 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) [2022-03-03 17:52:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2654 transitions. [2022-03-03 17:52:44,103 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2654 transitions. Word has length 79 [2022-03-03 17:52:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:44,103 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2654 transitions. [2022-03-03 17:52:44,103 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) [2022-03-03 17:52:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2654 transitions. [2022-03-03 17:52:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:44,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:44,105 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] [2022-03-03 17:52:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-03 17:52:44,105 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 287637904, now seen corresponding path program 29 times [2022-03-03 17:52:44,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:44,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235874265] [2022-03-03 17:52:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:44,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:44,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235874265] [2022-03-03 17:52:44,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235874265] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:44,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:44,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:52:44,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088496777] [2022-03-03 17:52:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:44,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:52:44,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:52:44,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:52:44,499 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) [2022-03-03 17:52:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:45,402 INFO L93 Difference]: Finished difference Result 1358 states and 3307 transitions. [2022-03-03 17:52:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:52:45,402 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 [2022-03-03 17:52:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:45,404 INFO L225 Difference]: With dead ends: 1358 [2022-03-03 17:52:45,404 INFO L226 Difference]: Without dead ends: 1082 [2022-03-03 17:52:45,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:52:45,405 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 318 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:45,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2877 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-03-03 17:52:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-03-03 17:52:45,418 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) [2022-03-03 17:52:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2643 transitions. [2022-03-03 17:52:45,419 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2643 transitions. Word has length 79 [2022-03-03 17:52:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:45,419 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2643 transitions. [2022-03-03 17:52:45,419 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) [2022-03-03 17:52:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2643 transitions. [2022-03-03 17:52:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:45,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:45,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:45,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-03 17:52:45,421 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1141318424, now seen corresponding path program 30 times [2022-03-03 17:52:45,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:45,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052565740] [2022-03-03 17:52:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:45,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:45,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052565740] [2022-03-03 17:52:45,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052565740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:45,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:45,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:52:45,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174900523] [2022-03-03 17:52:45,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:45,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:52:45,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:52:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:52:45,768 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) [2022-03-03 17:52:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:46,668 INFO L93 Difference]: Finished difference Result 1346 states and 3274 transitions. [2022-03-03 17:52:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:52:46,668 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 [2022-03-03 17:52:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:46,669 INFO L225 Difference]: With dead ends: 1346 [2022-03-03 17:52:46,670 INFO L226 Difference]: Without dead ends: 1001 [2022-03-03 17:52:46,670 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 [2022-03-03 17:52:46,670 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 331 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:46,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3111 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-03-03 17:52:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-03-03 17:52:46,683 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) [2022-03-03 17:52:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2488 transitions. [2022-03-03 17:52:46,684 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2488 transitions. Word has length 79 [2022-03-03 17:52:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:46,684 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 2488 transitions. [2022-03-03 17:52:46,685 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) [2022-03-03 17:52:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2488 transitions. [2022-03-03 17:52:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:46,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:46,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:46,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-03 17:52:46,687 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash -364385472, now seen corresponding path program 31 times [2022-03-03 17:52:46,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:46,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120897278] [2022-03-03 17:52:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:46,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:47,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:47,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120897278] [2022-03-03 17:52:47,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120897278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:47,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:47,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:47,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028289797] [2022-03-03 17:52:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:47,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:47,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:47,071 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) [2022-03-03 17:52:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:49,285 INFO L93 Difference]: Finished difference Result 1355 states and 3391 transitions. [2022-03-03 17:52:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:52:49,285 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 [2022-03-03 17:52:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:49,287 INFO L225 Difference]: With dead ends: 1355 [2022-03-03 17:52:49,287 INFO L226 Difference]: Without dead ends: 1225 [2022-03-03 17:52:49,287 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 [2022-03-03 17:52:49,287 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 376 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:49,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3038 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:52:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-03-03 17:52:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1089. [2022-03-03 17:52:49,301 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) [2022-03-03 17:52:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2722 transitions. [2022-03-03 17:52:49,302 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2722 transitions. Word has length 79 [2022-03-03 17:52:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:49,303 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2722 transitions. [2022-03-03 17:52:49,303 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) [2022-03-03 17:52:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2722 transitions. [2022-03-03 17:52:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:49,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:49,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:49,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-03 17:52:49,305 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1217776638, now seen corresponding path program 32 times [2022-03-03 17:52:49,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:49,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009853642] [2022-03-03 17:52:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:49,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:49,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009853642] [2022-03-03 17:52:49,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009853642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:49,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:49,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:49,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344834919] [2022-03-03 17:52:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:49,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:49,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:49,722 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) [2022-03-03 17:52:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:51,320 INFO L93 Difference]: Finished difference Result 1354 states and 3382 transitions. [2022-03-03 17:52:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:52:51,320 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 [2022-03-03 17:52:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:51,322 INFO L225 Difference]: With dead ends: 1354 [2022-03-03 17:52:51,322 INFO L226 Difference]: Without dead ends: 1256 [2022-03-03 17:52:51,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:52:51,323 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 330 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3416 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:51,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 3416 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:52:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-03-03 17:52:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1093. [2022-03-03 17:52:51,338 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) [2022-03-03 17:52:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2729 transitions. [2022-03-03 17:52:51,340 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2729 transitions. Word has length 79 [2022-03-03 17:52:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:51,340 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2729 transitions. [2022-03-03 17:52:51,340 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) [2022-03-03 17:52:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2729 transitions. [2022-03-03 17:52:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:51,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:51,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:51,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-03 17:52:51,343 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash -503539360, now seen corresponding path program 33 times [2022-03-03 17:52:51,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:51,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336999612] [2022-03-03 17:52:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:51,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:51,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336999612] [2022-03-03 17:52:51,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336999612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:51,760 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:51,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:51,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745217305] [2022-03-03 17:52:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:51,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:51,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:51,761 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) [2022-03-03 17:52:55,437 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 [] [2022-03-03 17:52:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:55,994 INFO L93 Difference]: Finished difference Result 1377 states and 3431 transitions. [2022-03-03 17:52:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:52:55,994 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 [2022-03-03 17:52:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:55,996 INFO L225 Difference]: With dead ends: 1377 [2022-03-03 17:52:55,996 INFO L226 Difference]: Without dead ends: 1264 [2022-03-03 17:52:55,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=3845, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:52:55,997 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 416 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:55,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 3210 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1268 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-03 17:52:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-03-03 17:52:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1109. [2022-03-03 17:52:56,010 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) [2022-03-03 17:52:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 2761 transitions. [2022-03-03 17:52:56,011 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 2761 transitions. Word has length 79 [2022-03-03 17:52:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:56,013 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 2761 transitions. [2022-03-03 17:52:56,013 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) [2022-03-03 17:52:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 2761 transitions. [2022-03-03 17:52:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:56,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:56,016 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] [2022-03-03 17:52:56,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-03 17:52:56,016 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -178091134, now seen corresponding path program 34 times [2022-03-03 17:52:56,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:56,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673846933] [2022-03-03 17:52:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:56,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:56,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673846933] [2022-03-03 17:52:56,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673846933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:56,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:56,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:52:56,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907216447] [2022-03-03 17:52:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:56,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:52:56,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:52:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:52:56,422 INFO L87 Difference]: Start difference. First operand 1109 states and 2761 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) [2022-03-03 17:52:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:59,067 INFO L93 Difference]: Finished difference Result 1371 states and 3407 transitions. [2022-03-03 17:52:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:52:59,067 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 [2022-03-03 17:52:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:59,069 INFO L225 Difference]: With dead ends: 1371 [2022-03-03 17:52:59,069 INFO L226 Difference]: Without dead ends: 1221 [2022-03-03 17:52:59,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=3384, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:52:59,070 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 384 mSDsluCounter, 2901 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:59,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2965 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-03 17:52:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-03-03 17:52:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1105. [2022-03-03 17:52:59,080 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) [2022-03-03 17:52:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-03-03 17:52:59,081 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-03-03 17:52:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:59,081 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-03-03 17:52:59,081 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) [2022-03-03 17:52:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-03-03 17:52:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:52:59,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:59,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:59,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-03 17:52:59,083 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:59,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash 683491200, now seen corresponding path program 35 times [2022-03-03 17:52:59,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:59,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005211662] [2022-03-03 17:52:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:59,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:59,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005211662] [2022-03-03 17:52:59,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005211662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:52:59,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:52:59,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:52:59,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175733220] [2022-03-03 17:52:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:52:59,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:52:59,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:59,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:52:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:52:59,454 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) [2022-03-03 17:53:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:00,904 INFO L93 Difference]: Finished difference Result 1364 states and 3385 transitions. [2022-03-03 17:53:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:53:00,905 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 [2022-03-03 17:53:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:00,906 INFO L225 Difference]: With dead ends: 1364 [2022-03-03 17:53:00,906 INFO L226 Difference]: Without dead ends: 1266 [2022-03-03 17:53:00,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:53:00,907 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 315 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:00,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 3060 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:53:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-03-03 17:53:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1129. [2022-03-03 17:53:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 2.4893617021276597) internal successors, (2808), 1128 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) [2022-03-03 17:53:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2808 transitions. [2022-03-03 17:53:00,920 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2808 transitions. Word has length 79 [2022-03-03 17:53:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:00,920 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 2808 transitions. [2022-03-03 17:53:00,920 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) [2022-03-03 17:53:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2808 transitions. [2022-03-03 17:53:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:00,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:00,922 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] [2022-03-03 17:53:00,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-03 17:53:00,922 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2000024092, now seen corresponding path program 36 times [2022-03-03 17:53:00,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:00,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672260453] [2022-03-03 17:53:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:01,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:01,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672260453] [2022-03-03 17:53:01,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672260453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:01,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:01,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:01,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706867938] [2022-03-03 17:53:01,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:01,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:01,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:01,303 INFO L87 Difference]: Start difference. First operand 1129 states and 2808 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) [2022-03-03 17:53:03,667 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 [] [2022-03-03 17:53:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:04,495 INFO L93 Difference]: Finished difference Result 1347 states and 3332 transitions. [2022-03-03 17:53:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:53:04,497 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 [2022-03-03 17:53:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:04,498 INFO L225 Difference]: With dead ends: 1347 [2022-03-03 17:53:04,498 INFO L226 Difference]: Without dead ends: 1188 [2022-03-03 17:53:04,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2240, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:53:04,499 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 266 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 3046 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1218 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 17:53:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-03-03 17:53:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1081. [2022-03-03 17:53:04,510 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) [2022-03-03 17:53:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-03-03 17:53:04,511 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-03-03 17:53:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:04,511 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-03-03 17:53:04,511 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) [2022-03-03 17:53:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-03-03 17:53:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:04,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:04,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:04,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-03 17:53:04,513 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 647964670, now seen corresponding path program 37 times [2022-03-03 17:53:04,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:04,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772226354] [2022-03-03 17:53:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:04,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:04,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772226354] [2022-03-03 17:53:04,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772226354] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:04,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:04,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:04,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375100832] [2022-03-03 17:53:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:04,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:04,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:04,918 INFO L87 Difference]: Start difference. First operand 1081 states and 2684 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) [2022-03-03 17:53:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:06,342 INFO L93 Difference]: Finished difference Result 1321 states and 3277 transitions. [2022-03-03 17:53:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:53:06,343 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 [2022-03-03 17:53:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:06,344 INFO L225 Difference]: With dead ends: 1321 [2022-03-03 17:53:06,344 INFO L226 Difference]: Without dead ends: 1192 [2022-03-03 17:53:06,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:53:06,345 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 372 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:06,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 2776 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:53:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-03 17:53:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1081. [2022-03-03 17:53:06,355 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) [2022-03-03 17:53:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2696 transitions. [2022-03-03 17:53:06,356 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2696 transitions. Word has length 79 [2022-03-03 17:53:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:06,356 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2696 transitions. [2022-03-03 17:53:06,356 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) [2022-03-03 17:53:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2696 transitions. [2022-03-03 17:53:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:06,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:06,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:06,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-03 17:53:06,358 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1725629730, now seen corresponding path program 38 times [2022-03-03 17:53:06,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:06,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42559538] [2022-03-03 17:53:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:06,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:06,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42559538] [2022-03-03 17:53:06,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42559538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:06,718 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:06,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:06,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752541745] [2022-03-03 17:53:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:06,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:06,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:06,719 INFO L87 Difference]: Start difference. First operand 1081 states and 2696 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) [2022-03-03 17:53:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:08,115 INFO L93 Difference]: Finished difference Result 1291 states and 3207 transitions. [2022-03-03 17:53:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:53:08,116 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 [2022-03-03 17:53:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:08,118 INFO L225 Difference]: With dead ends: 1291 [2022-03-03 17:53:08,118 INFO L226 Difference]: Without dead ends: 1177 [2022-03-03 17:53:08,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:53:08,119 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 300 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:08,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2984 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:53:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-03-03 17:53:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1081. [2022-03-03 17:53:08,132 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) [2022-03-03 17:53:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-03-03 17:53:08,134 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-03-03 17:53:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:08,134 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-03-03 17:53:08,134 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) [2022-03-03 17:53:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-03-03 17:53:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:08,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:08,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:08,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-03 17:53:08,137 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1358735300, now seen corresponding path program 39 times [2022-03-03 17:53:08,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:08,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080930683] [2022-03-03 17:53:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:08,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:08,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080930683] [2022-03-03 17:53:08,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080930683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:08,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:08,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:08,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465595885] [2022-03-03 17:53:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:08,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:08,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:08,511 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) [2022-03-03 17:53:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:09,733 INFO L93 Difference]: Finished difference Result 1263 states and 3134 transitions. [2022-03-03 17:53:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:53:09,733 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 [2022-03-03 17:53:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:09,735 INFO L225 Difference]: With dead ends: 1263 [2022-03-03 17:53:09,735 INFO L226 Difference]: Without dead ends: 1157 [2022-03-03 17:53:09,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2617, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:53:09,736 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 315 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:09,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2704 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-03 17:53:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1073. [2022-03-03 17:53:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.4944029850746268) internal successors, (2674), 1072 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2674 transitions. [2022-03-03 17:53:09,747 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2674 transitions. Word has length 79 [2022-03-03 17:53:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:09,747 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2674 transitions. [2022-03-03 17:53:09,747 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) [2022-03-03 17:53:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2674 transitions. [2022-03-03 17:53:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:09,749 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:09,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:09,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-03 17:53:09,749 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1751303904, now seen corresponding path program 40 times [2022-03-03 17:53:09,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:09,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769936278] [2022-03-03 17:53:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:10,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:10,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769936278] [2022-03-03 17:53:10,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769936278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:10,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:10,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:10,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118343676] [2022-03-03 17:53:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:10,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:10,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:10,122 INFO L87 Difference]: Start difference. First operand 1073 states and 2674 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) [2022-03-03 17:53:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:11,583 INFO L93 Difference]: Finished difference Result 1320 states and 3276 transitions. [2022-03-03 17:53:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:53:11,584 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 [2022-03-03 17:53:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:11,585 INFO L225 Difference]: With dead ends: 1320 [2022-03-03 17:53:11,585 INFO L226 Difference]: Without dead ends: 1222 [2022-03-03 17:53:11,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:53:11,586 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 333 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:11,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2757 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:53:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-03 17:53:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1097. [2022-03-03 17:53:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 2.4927007299270074) internal successors, (2732), 1096 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-03-03 17:53:11,598 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-03-03 17:53:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:11,598 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-03-03 17:53:11,598 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) [2022-03-03 17:53:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-03-03 17:53:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:11,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:11,599 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] [2022-03-03 17:53:11,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-03 17:53:11,600 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -434771012, now seen corresponding path program 41 times [2022-03-03 17:53:11,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:11,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692628225] [2022-03-03 17:53:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:11,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:11,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692628225] [2022-03-03 17:53:11,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692628225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:11,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:11,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:11,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659576408] [2022-03-03 17:53:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:11,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:11,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:11,951 INFO L87 Difference]: Start difference. First operand 1097 states and 2732 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) [2022-03-03 17:53:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:13,401 INFO L93 Difference]: Finished difference Result 1288 states and 3188 transitions. [2022-03-03 17:53:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:53:13,402 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 [2022-03-03 17:53:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:13,403 INFO L225 Difference]: With dead ends: 1288 [2022-03-03 17:53:13,403 INFO L226 Difference]: Without dead ends: 1145 [2022-03-03 17:53:13,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:53:13,404 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 312 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:13,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2975 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:53:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-03-03 17:53:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1065. [2022-03-03 17:53:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.492481203007519) internal successors, (2652), 1064 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-03-03 17:53:13,423 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-03-03 17:53:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:13,423 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-03-03 17:53:13,424 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) [2022-03-03 17:53:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-03-03 17:53:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:13,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:13,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:13,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-03 17:53:13,426 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash -917420034, now seen corresponding path program 42 times [2022-03-03 17:53:13,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:13,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960395227] [2022-03-03 17:53:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:13,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:13,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:13,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960395227] [2022-03-03 17:53:13,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960395227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:13,799 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:13,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:53:13,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396609153] [2022-03-03 17:53:13,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:13,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:53:13,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:53:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:53:13,800 INFO L87 Difference]: Start difference. First operand 1065 states and 2652 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) [2022-03-03 17:53:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:16,490 INFO L93 Difference]: Finished difference Result 1363 states and 3384 transitions. [2022-03-03 17:53:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:53:16,490 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 [2022-03-03 17:53:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:16,491 INFO L225 Difference]: With dead ends: 1363 [2022-03-03 17:53:16,491 INFO L226 Difference]: Without dead ends: 1265 [2022-03-03 17:53:16,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 17:53:16,492 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 386 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:16,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 3183 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-03 17:53:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-03-03 17:53:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1093. [2022-03-03 17:53:16,502 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) [2022-03-03 17:53:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-03 17:53:16,503 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-03 17:53:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:16,503 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-03 17:53:16,504 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) [2022-03-03 17:53:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-03 17:53:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:16,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:16,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:16,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-03 17:53:16,505 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 399112858, now seen corresponding path program 43 times [2022-03-03 17:53:16,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:16,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808346459] [2022-03-03 17:53:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:16,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:16,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808346459] [2022-03-03 17:53:16,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808346459] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:16,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:16,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:53:16,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489921931] [2022-03-03 17:53:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:53:16,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:53:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:53:16,932 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) [2022-03-03 17:53:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:18,448 INFO L93 Difference]: Finished difference Result 1319 states and 3267 transitions. [2022-03-03 17:53:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:53:18,448 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 [2022-03-03 17:53:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:18,450 INFO L225 Difference]: With dead ends: 1319 [2022-03-03 17:53:18,450 INFO L226 Difference]: Without dead ends: 1184 [2022-03-03 17:53:18,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=3494, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:53:18,451 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 348 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:18,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 3443 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:53:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-03 17:53:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1069. [2022-03-03 17:53:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.4897003745318353) internal successors, (2659), 1068 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) [2022-03-03 17:53:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-03-03 17:53:18,464 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-03-03 17:53:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:18,464 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-03-03 17:53:18,464 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) [2022-03-03 17:53:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-03-03 17:53:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:18,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:18,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:18,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-03 17:53:18,466 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash -731402172, now seen corresponding path program 44 times [2022-03-03 17:53:18,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:18,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400813706] [2022-03-03 17:53:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:18,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:18,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400813706] [2022-03-03 17:53:18,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400813706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:18,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:18,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:18,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087830878] [2022-03-03 17:53:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:18,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:18,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:18,837 INFO L87 Difference]: Start difference. First operand 1069 states and 2659 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) [2022-03-03 17:53:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:20,096 INFO L93 Difference]: Finished difference Result 1307 states and 3234 transitions. [2022-03-03 17:53:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:53:20,096 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 [2022-03-03 17:53:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:20,098 INFO L225 Difference]: With dead ends: 1307 [2022-03-03 17:53:20,098 INFO L226 Difference]: Without dead ends: 1133 [2022-03-03 17:53:20,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2835, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:53:20,098 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 357 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:20,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2948 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-03-03 17:53:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1053. [2022-03-03 17:53:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4895437262357416) internal successors, (2619), 1052 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-03-03 17:53:20,112 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-03-03 17:53:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:20,112 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-03-03 17:53:20,112 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) [2022-03-03 17:53:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-03-03 17:53:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:20,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:20,114 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] [2022-03-03 17:53:20,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-03 17:53:20,114 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1689438564, now seen corresponding path program 45 times [2022-03-03 17:53:20,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:20,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992164025] [2022-03-03 17:53:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:20,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:20,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992164025] [2022-03-03 17:53:20,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992164025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:20,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:20,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:20,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988709320] [2022-03-03 17:53:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:20,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:20,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:20,467 INFO L87 Difference]: Start difference. First operand 1053 states and 2619 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) [2022-03-03 17:53:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:22,780 INFO L93 Difference]: Finished difference Result 1341 states and 3315 transitions. [2022-03-03 17:53:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:53:22,781 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 [2022-03-03 17:53:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:22,782 INFO L225 Difference]: With dead ends: 1341 [2022-03-03 17:53:22,782 INFO L226 Difference]: Without dead ends: 1243 [2022-03-03 17:53:22,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:53:22,783 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 329 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:22,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3134 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 17:53:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-03 17:53:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1101. [2022-03-03 17:53:22,795 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) [2022-03-03 17:53:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-03 17:53:22,797 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-03 17:53:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:22,797 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-03 17:53:22,797 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) [2022-03-03 17:53:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-03 17:53:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:22,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:22,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:22,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-03 17:53:22,799 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1288995840, now seen corresponding path program 46 times [2022-03-03 17:53:22,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:22,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598734318] [2022-03-03 17:53:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:23,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:23,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598734318] [2022-03-03 17:53:23,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598734318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:23,200 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:23,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:23,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094180265] [2022-03-03 17:53:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:23,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:23,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:23,201 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) [2022-03-03 17:53:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:24,607 INFO L93 Difference]: Finished difference Result 1309 states and 3227 transitions. [2022-03-03 17:53:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:53:24,608 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 [2022-03-03 17:53:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:24,610 INFO L225 Difference]: With dead ends: 1309 [2022-03-03 17:53:24,610 INFO L226 Difference]: Without dead ends: 1174 [2022-03-03 17:53:24,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:53:24,611 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 311 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:24,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3083 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:53:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-03 17:53:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1077. [2022-03-03 17:53:24,621 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) [2022-03-03 17:53:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-03 17:53:24,622 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-03 17:53:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:24,622 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-03 17:53:24,622 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) [2022-03-03 17:53:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-03 17:53:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:24,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:24,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:24,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-03 17:53:24,624 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1637965892, now seen corresponding path program 47 times [2022-03-03 17:53:24,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:24,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856854939] [2022-03-03 17:53:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:24,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:24,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856854939] [2022-03-03 17:53:24,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856854939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:24,962 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:24,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:24,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7659845] [2022-03-03 17:53:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:24,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:24,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:24,963 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) [2022-03-03 17:53:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:26,113 INFO L93 Difference]: Finished difference Result 1285 states and 3161 transitions. [2022-03-03 17:53:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:53:26,113 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 [2022-03-03 17:53:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:26,115 INFO L225 Difference]: With dead ends: 1285 [2022-03-03 17:53:26,115 INFO L226 Difference]: Without dead ends: 1081 [2022-03-03 17:53:26,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:53:26,116 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 314 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:26,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2718 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-03 17:53:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1029. [2022-03-03 17:53:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.487354085603113) internal successors, (2557), 1028 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2557 transitions. [2022-03-03 17:53:26,130 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2557 transitions. Word has length 79 [2022-03-03 17:53:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:26,130 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2557 transitions. [2022-03-03 17:53:26,130 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) [2022-03-03 17:53:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2557 transitions. [2022-03-03 17:53:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:26,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:26,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:26,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-03 17:53:26,132 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1342003044, now seen corresponding path program 48 times [2022-03-03 17:53:26,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:26,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216538665] [2022-03-03 17:53:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:26,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:26,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216538665] [2022-03-03 17:53:26,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216538665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:26,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:26,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:26,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709620690] [2022-03-03 17:53:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:26,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:26,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:26,473 INFO L87 Difference]: Start difference. First operand 1029 states and 2557 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) [2022-03-03 17:53:28,826 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 [] [2022-03-03 17:53:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:29,386 INFO L93 Difference]: Finished difference Result 1251 states and 3101 transitions. [2022-03-03 17:53:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:53:29,386 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 [2022-03-03 17:53:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:29,388 INFO L225 Difference]: With dead ends: 1251 [2022-03-03 17:53:29,388 INFO L226 Difference]: Without dead ends: 1137 [2022-03-03 17:53:29,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:53:29,388 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 275 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:29,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2340 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 962 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-03 17:53:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-03-03 17:53:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1065. [2022-03-03 17:53:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.492481203007519) internal successors, (2652), 1064 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-03-03 17:53:29,403 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-03-03 17:53:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:29,403 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-03-03 17:53:29,403 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) [2022-03-03 17:53:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-03-03 17:53:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:29,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:29,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:29,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-03 17:53:29,405 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:29,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1708897474, now seen corresponding path program 49 times [2022-03-03 17:53:29,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:29,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406809313] [2022-03-03 17:53:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:29,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:29,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406809313] [2022-03-03 17:53:29,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406809313] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:29,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:29,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:29,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815859009] [2022-03-03 17:53:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:29,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:29,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:29,745 INFO L87 Difference]: Start difference. First operand 1065 states and 2652 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) [2022-03-03 17:53:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:30,751 INFO L93 Difference]: Finished difference Result 1262 states and 3125 transitions. [2022-03-03 17:53:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:53:30,751 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 [2022-03-03 17:53:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:30,753 INFO L225 Difference]: With dead ends: 1262 [2022-03-03 17:53:30,753 INFO L226 Difference]: Without dead ends: 1164 [2022-03-03 17:53:30,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:53:30,753 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 289 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:30,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2542 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-03 17:53:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1069. [2022-03-03 17:53:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.4897003745318353) internal successors, (2659), 1068 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) [2022-03-03 17:53:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-03-03 17:53:30,767 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-03-03 17:53:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:30,767 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-03-03 17:53:30,767 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) [2022-03-03 17:53:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-03-03 17:53:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:30,769 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:30,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:30,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-03 17:53:30,769 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash -994660196, now seen corresponding path program 50 times [2022-03-03 17:53:30,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:30,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381292063] [2022-03-03 17:53:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:30,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:31,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:31,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381292063] [2022-03-03 17:53:31,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381292063] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:31,119 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:31,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:31,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885001096] [2022-03-03 17:53:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:31,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:31,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:31,120 INFO L87 Difference]: Start difference. First operand 1069 states and 2659 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) [2022-03-03 17:53:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:32,080 INFO L93 Difference]: Finished difference Result 1230 states and 3041 transitions. [2022-03-03 17:53:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:53:32,080 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 [2022-03-03 17:53:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:32,082 INFO L225 Difference]: With dead ends: 1230 [2022-03-03 17:53:32,082 INFO L226 Difference]: Without dead ends: 1121 [2022-03-03 17:53:32,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:53:32,083 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 316 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:32,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2469 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:32,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-03-03 17:53:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1061. [2022-03-03 17:53:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 2.491509433962264) internal successors, (2641), 1060 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2641 transitions. [2022-03-03 17:53:32,093 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2641 transitions. Word has length 79 [2022-03-03 17:53:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:32,093 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 2641 transitions. [2022-03-03 17:53:32,093 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) [2022-03-03 17:53:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2641 transitions. [2022-03-03 17:53:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:32,095 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:32,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:32,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-03 17:53:32,095 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -523969382, now seen corresponding path program 51 times [2022-03-03 17:53:32,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:32,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651349524] [2022-03-03 17:53:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:32,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:32,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651349524] [2022-03-03 17:53:32,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651349524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:32,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:32,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:32,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727505926] [2022-03-03 17:53:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:32,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:32,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:32,439 INFO L87 Difference]: Start difference. First operand 1061 states and 2641 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) [2022-03-03 17:53:34,956 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 [] [2022-03-03 17:53:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:35,247 INFO L93 Difference]: Finished difference Result 1284 states and 3177 transitions. [2022-03-03 17:53:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:53:35,247 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 [2022-03-03 17:53:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:35,249 INFO L225 Difference]: With dead ends: 1284 [2022-03-03 17:53:35,249 INFO L226 Difference]: Without dead ends: 1186 [2022-03-03 17:53:35,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:53:35,249 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 294 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:35,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2606 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 17:53:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-03 17:53:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-03 17:53:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 2.4898523985239853) internal successors, (2699), 1084 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2699 transitions. [2022-03-03 17:53:35,264 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2699 transitions. Word has length 79 [2022-03-03 17:53:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:35,264 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2699 transitions. [2022-03-03 17:53:35,264 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) [2022-03-03 17:53:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2699 transitions. [2022-03-03 17:53:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:35,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:35,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:35,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-03 17:53:35,266 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 792563510, now seen corresponding path program 52 times [2022-03-03 17:53:35,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:35,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258884964] [2022-03-03 17:53:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:35,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:35,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258884964] [2022-03-03 17:53:35,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258884964] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:35,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:35,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:35,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311560637] [2022-03-03 17:53:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:35,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:35,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:35,612 INFO L87 Difference]: Start difference. First operand 1085 states and 2699 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) [2022-03-03 17:53:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:36,626 INFO L93 Difference]: Finished difference Result 1252 states and 3089 transitions. [2022-03-03 17:53:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:53:36,627 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 [2022-03-03 17:53:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:36,628 INFO L225 Difference]: With dead ends: 1252 [2022-03-03 17:53:36,628 INFO L226 Difference]: Without dead ends: 1109 [2022-03-03 17:53:36,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:53:36,629 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 275 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:36,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2690 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-03 17:53:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1053. [2022-03-03 17:53:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4895437262357416) internal successors, (2619), 1052 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-03-03 17:53:36,639 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-03-03 17:53:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:36,639 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-03-03 17:53:36,639 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) [2022-03-03 17:53:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-03-03 17:53:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:36,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:36,641 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] [2022-03-03 17:53:36,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-03 17:53:36,641 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:36,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash 309914488, now seen corresponding path program 53 times [2022-03-03 17:53:36,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:36,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583509878] [2022-03-03 17:53:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:36,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:37,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:37,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583509878] [2022-03-03 17:53:37,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583509878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:37,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:37,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:37,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307662310] [2022-03-03 17:53:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:37,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:37,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:37,006 INFO L87 Difference]: Start difference. First operand 1053 states and 2619 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) [2022-03-03 17:53:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:38,260 INFO L93 Difference]: Finished difference Result 1327 states and 3285 transitions. [2022-03-03 17:53:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:53:38,261 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 [2022-03-03 17:53:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:38,262 INFO L225 Difference]: With dead ends: 1327 [2022-03-03 17:53:38,262 INFO L226 Difference]: Without dead ends: 1229 [2022-03-03 17:53:38,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:53:38,263 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 327 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:38,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2884 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:53:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-03 17:53:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1081. [2022-03-03 17:53:38,274 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) [2022-03-03 17:53:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2688 transitions. [2022-03-03 17:53:38,275 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2688 transitions. Word has length 79 [2022-03-03 17:53:38,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:38,275 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2688 transitions. [2022-03-03 17:53:38,275 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) [2022-03-03 17:53:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2688 transitions. [2022-03-03 17:53:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:38,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:38,277 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] [2022-03-03 17:53:38,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-03 17:53:38,277 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1626447380, now seen corresponding path program 54 times [2022-03-03 17:53:38,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:38,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240228298] [2022-03-03 17:53:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:38,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:38,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240228298] [2022-03-03 17:53:38,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240228298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:38,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:38,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:38,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525075014] [2022-03-03 17:53:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:38,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:38,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:38,605 INFO L87 Difference]: Start difference. First operand 1081 states and 2688 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) [2022-03-03 17:53:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:39,881 INFO L93 Difference]: Finished difference Result 1283 states and 3168 transitions. [2022-03-03 17:53:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:53:39,881 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 [2022-03-03 17:53:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:39,882 INFO L225 Difference]: With dead ends: 1283 [2022-03-03 17:53:39,882 INFO L226 Difference]: Without dead ends: 1148 [2022-03-03 17:53:39,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:53:39,883 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 329 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:39,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2728 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-03 17:53:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1057. [2022-03-03 17:53:39,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.4867424242424243) internal successors, (2626), 1056 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2626 transitions. [2022-03-03 17:53:39,897 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2626 transitions. Word has length 79 [2022-03-03 17:53:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:39,897 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2626 transitions. [2022-03-03 17:53:39,897 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) [2022-03-03 17:53:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2626 transitions. [2022-03-03 17:53:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:39,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:39,899 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] [2022-03-03 17:53:39,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-03 17:53:39,900 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash 495932350, now seen corresponding path program 55 times [2022-03-03 17:53:39,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:39,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231752200] [2022-03-03 17:53:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:40,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:40,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231752200] [2022-03-03 17:53:40,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231752200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:40,257 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:40,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:40,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746007391] [2022-03-03 17:53:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:40,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:40,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:40,259 INFO L87 Difference]: Start difference. First operand 1057 states and 2626 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) [2022-03-03 17:53:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:41,275 INFO L93 Difference]: Finished difference Result 1271 states and 3135 transitions. [2022-03-03 17:53:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:53:41,275 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 [2022-03-03 17:53:41,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:41,276 INFO L225 Difference]: With dead ends: 1271 [2022-03-03 17:53:41,276 INFO L226 Difference]: Without dead ends: 1105 [2022-03-03 17:53:41,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:53:41,277 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 331 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:41,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2804 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-03-03 17:53:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1049. [2022-03-03 17:53:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 2.4885496183206106) internal successors, (2608), 1048 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 2608 transitions. [2022-03-03 17:53:41,291 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 2608 transitions. Word has length 79 [2022-03-03 17:53:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:41,292 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 2608 transitions. [2022-03-03 17:53:41,292 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) [2022-03-03 17:53:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 2608 transitions. [2022-03-03 17:53:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:41,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:41,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:41,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-03 17:53:41,294 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1336687230, now seen corresponding path program 56 times [2022-03-03 17:53:41,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:41,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678980306] [2022-03-03 17:53:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:41,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:41,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678980306] [2022-03-03 17:53:41,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678980306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:41,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:41,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:41,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003404244] [2022-03-03 17:53:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:41,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:41,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:41,638 INFO L87 Difference]: Start difference. First operand 1049 states and 2608 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) [2022-03-03 17:53:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:42,974 INFO L93 Difference]: Finished difference Result 1329 states and 3282 transitions. [2022-03-03 17:53:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:53:42,974 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 [2022-03-03 17:53:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:42,975 INFO L225 Difference]: With dead ends: 1329 [2022-03-03 17:53:42,975 INFO L226 Difference]: Without dead ends: 1231 [2022-03-03 17:53:42,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:53:42,976 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 302 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3222 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 [2022-03-03 17:53:42,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3222 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-03 17:53:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1097. [2022-03-03 17:53:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 2.4927007299270074) internal successors, (2732), 1096 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-03-03 17:53:42,987 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-03-03 17:53:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:42,987 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-03-03 17:53:42,987 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) [2022-03-03 17:53:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-03-03 17:53:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:42,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:42,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:42,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-03 17:53:42,989 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:42,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -20154338, now seen corresponding path program 57 times [2022-03-03 17:53:42,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:42,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307851012] [2022-03-03 17:53:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:43,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:43,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307851012] [2022-03-03 17:53:43,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307851012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:43,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:43,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:43,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515780418] [2022-03-03 17:53:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:43,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:43,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:43,379 INFO L87 Difference]: Start difference. First operand 1097 states and 2732 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) [2022-03-03 17:53:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:44,941 INFO L93 Difference]: Finished difference Result 1297 states and 3194 transitions. [2022-03-03 17:53:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:53:44,941 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 [2022-03-03 17:53:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:44,943 INFO L225 Difference]: With dead ends: 1297 [2022-03-03 17:53:44,943 INFO L226 Difference]: Without dead ends: 1162 [2022-03-03 17:53:44,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:53:44,944 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 301 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:44,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3183 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:53:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-03 17:53:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1073. [2022-03-03 17:53:44,954 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) [2022-03-03 17:53:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-03-03 17:53:44,956 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-03-03 17:53:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:44,956 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-03-03 17:53:44,956 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) [2022-03-03 17:53:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-03-03 17:53:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:44,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:44,957 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] [2022-03-03 17:53:44,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-03 17:53:44,957 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:44,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1388159902, now seen corresponding path program 58 times [2022-03-03 17:53:44,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:44,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091055228] [2022-03-03 17:53:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:44,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:45,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:45,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091055228] [2022-03-03 17:53:45,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091055228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:45,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:45,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:45,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257681290] [2022-03-03 17:53:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:45,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:45,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:45,292 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) [2022-03-03 17:53:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:46,291 INFO L93 Difference]: Finished difference Result 1273 states and 3128 transitions. [2022-03-03 17:53:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:53:46,291 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 [2022-03-03 17:53:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:46,293 INFO L225 Difference]: With dead ends: 1273 [2022-03-03 17:53:46,293 INFO L226 Difference]: Without dead ends: 1085 [2022-03-03 17:53:46,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:53:46,293 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 289 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:46,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2815 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-03 17:53:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-03 17:53:46,303 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) [2022-03-03 17:53:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2586 transitions. [2022-03-03 17:53:46,304 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2586 transitions. Word has length 79 [2022-03-03 17:53:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:46,304 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2586 transitions. [2022-03-03 17:53:46,304 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) [2022-03-03 17:53:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2586 transitions. [2022-03-03 17:53:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:46,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:46,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:46,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-03 17:53:46,305 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1998693084, now seen corresponding path program 59 times [2022-03-03 17:53:46,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:46,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963596249] [2022-03-03 17:53:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:46,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:46,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963596249] [2022-03-03 17:53:46,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963596249] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:46,661 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:46,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:53:46,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629561286] [2022-03-03 17:53:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:46,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:53:46,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:53:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:53:46,662 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) [2022-03-03 17:53:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:48,669 INFO L93 Difference]: Finished difference Result 1369 states and 3388 transitions. [2022-03-03 17:53:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:53:48,669 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 [2022-03-03 17:53:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:48,670 INFO L225 Difference]: With dead ends: 1369 [2022-03-03 17:53:48,670 INFO L226 Difference]: Without dead ends: 1271 [2022-03-03 17:53:48,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=3502, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:53:48,671 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 355 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:48,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3117 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:53:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-03 17:53:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1093. [2022-03-03 17:53:48,684 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) [2022-03-03 17:53:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-03 17:53:48,686 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-03 17:53:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:48,686 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-03 17:53:48,686 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) [2022-03-03 17:53:48,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-03 17:53:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:48,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:48,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:48,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-03 17:53:48,688 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash -682160192, now seen corresponding path program 60 times [2022-03-03 17:53:48,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:48,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451240928] [2022-03-03 17:53:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:48,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:49,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:49,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451240928] [2022-03-03 17:53:49,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451240928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:49,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:49,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:53:49,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628628671] [2022-03-03 17:53:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:49,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:53:49,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:53:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:53:49,071 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) [2022-03-03 17:53:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:50,674 INFO L93 Difference]: Finished difference Result 1325 states and 3271 transitions. [2022-03-03 17:53:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:53:50,674 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 [2022-03-03 17:53:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:50,676 INFO L225 Difference]: With dead ends: 1325 [2022-03-03 17:53:50,676 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 17:53:50,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=3388, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:53:50,676 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 373 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:50,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2953 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:53:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 17:53:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1069. [2022-03-03 17:53:50,689 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) [2022-03-03 17:53:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-03 17:53:50,690 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-03 17:53:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:50,690 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-03 17:53:50,691 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) [2022-03-03 17:53:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-03 17:53:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:50,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:50,692 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] [2022-03-03 17:53:50,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-03 17:53:50,692 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2050165756, now seen corresponding path program 61 times [2022-03-03 17:53:50,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:50,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593390303] [2022-03-03 17:53:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:50,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:51,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:51,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593390303] [2022-03-03 17:53:51,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593390303] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:51,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:51,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:51,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634952995] [2022-03-03 17:53:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:51,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:51,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:51,102 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) [2022-03-03 17:53:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:52,228 INFO L93 Difference]: Finished difference Result 1289 states and 3172 transitions. [2022-03-03 17:53:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:53:52,228 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 [2022-03-03 17:53:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:52,230 INFO L225 Difference]: With dead ends: 1289 [2022-03-03 17:53:52,230 INFO L226 Difference]: Without dead ends: 1109 [2022-03-03 17:53:52,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=2637, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:53:52,231 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 330 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:52,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2874 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-03 17:53:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1045. [2022-03-03 17:53:52,242 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) [2022-03-03 17:53:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2593 transitions. [2022-03-03 17:53:52,244 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2593 transitions. Word has length 79 [2022-03-03 17:53:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:52,244 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2593 transitions. [2022-03-03 17:53:52,244 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) [2022-03-03 17:53:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2593 transitions. [2022-03-03 17:53:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:52,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:52,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:52,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-03 17:53:52,245 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash -64673636, now seen corresponding path program 62 times [2022-03-03 17:53:52,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:52,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065852233] [2022-03-03 17:53:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:52,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:52,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065852233] [2022-03-03 17:53:52,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065852233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:52,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:52,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:52,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628336595] [2022-03-03 17:53:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:52,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:52,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:52,609 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) [2022-03-03 17:53:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:53,602 INFO L93 Difference]: Finished difference Result 1304 states and 3207 transitions. [2022-03-03 17:53:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:53:53,602 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 [2022-03-03 17:53:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:53,603 INFO L225 Difference]: With dead ends: 1304 [2022-03-03 17:53:53,604 INFO L226 Difference]: Without dead ends: 1073 [2022-03-03 17:53:53,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=2066, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:53:53,604 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:53,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3098 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-03 17:53:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1029. [2022-03-03 17:53:53,614 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) [2022-03-03 17:53:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2553 transitions. [2022-03-03 17:53:53,615 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2553 transitions. Word has length 79 [2022-03-03 17:53:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:53,615 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2553 transitions. [2022-03-03 17:53:53,615 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) [2022-03-03 17:53:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2553 transitions. [2022-03-03 17:53:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:53,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:53,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:53,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-03 17:53:53,617 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:53,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1581719678, now seen corresponding path program 63 times [2022-03-03 17:53:53,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:53,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224441305] [2022-03-03 17:53:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:53,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:53,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224441305] [2022-03-03 17:53:53,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224441305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:53,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:53,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:53,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568201459] [2022-03-03 17:53:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:53,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:53,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:53,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:53,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:53,958 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) [2022-03-03 17:53:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:55,417 INFO L93 Difference]: Finished difference Result 1345 states and 3322 transitions. [2022-03-03 17:53:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:53:55,418 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 [2022-03-03 17:53:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:55,419 INFO L225 Difference]: With dead ends: 1345 [2022-03-03 17:53:55,419 INFO L226 Difference]: Without dead ends: 1247 [2022-03-03 17:53:55,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:53:55,420 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 334 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:55,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3010 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:53:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-03 17:53:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1089. [2022-03-03 17:53:55,429 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) [2022-03-03 17:53:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-03-03 17:53:55,431 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-03-03 17:53:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-03-03 17:53:55,431 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) [2022-03-03 17:53:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-03-03 17:53:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:55,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:55,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:55,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-03 17:53:55,432 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1396714726, now seen corresponding path program 64 times [2022-03-03 17:53:55,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:55,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729407004] [2022-03-03 17:53:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:55,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:55,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729407004] [2022-03-03 17:53:55,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729407004] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:55,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:55,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:53:55,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431574358] [2022-03-03 17:53:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:55,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:53:55,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:53:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:53:55,861 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) [2022-03-03 17:53:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:57,520 INFO L93 Difference]: Finished difference Result 1301 states and 3205 transitions. [2022-03-03 17:53:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:53:57,521 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 [2022-03-03 17:53:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:57,522 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:53:57,522 INFO L226 Difference]: Without dead ends: 1166 [2022-03-03 17:53:57,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2943, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:53:57,523 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 337 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:57,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2853 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:53:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-03 17:53:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1065. [2022-03-03 17:53:57,534 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) [2022-03-03 17:53:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2644 transitions. [2022-03-03 17:53:57,535 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2644 transitions. Word has length 79 [2022-03-03 17:53:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:57,536 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2644 transitions. [2022-03-03 17:53:57,536 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) [2022-03-03 17:53:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2644 transitions. [2022-03-03 17:53:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:57,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:57,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:57,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-03 17:53:57,537 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1530247006, now seen corresponding path program 65 times [2022-03-03 17:53:57,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:57,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717834089] [2022-03-03 17:53:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:57,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:57,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:57,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717834089] [2022-03-03 17:53:57,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717834089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:57,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:57,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:53:57,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214283791] [2022-03-03 17:53:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:57,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:53:57,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:53:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:53:57,885 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) [2022-03-03 17:53:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:58,856 INFO L93 Difference]: Finished difference Result 1265 states and 3106 transitions. [2022-03-03 17:53:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:53:58,857 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 [2022-03-03 17:53:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:58,858 INFO L225 Difference]: With dead ends: 1265 [2022-03-03 17:53:58,858 INFO L226 Difference]: Without dead ends: 1085 [2022-03-03 17:53:58,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:53:58,859 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 310 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:58,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2632 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-03 17:53:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-03 17:53:58,869 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) [2022-03-03 17:53:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2582 transitions. [2022-03-03 17:53:58,870 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2582 transitions. Word has length 79 [2022-03-03 17:53:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:58,870 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2582 transitions. [2022-03-03 17:53:58,870 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) [2022-03-03 17:53:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2582 transitions. [2022-03-03 17:53:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:53:58,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:58,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:58,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-03 17:53:58,871 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash -779228170, now seen corresponding path program 66 times [2022-03-03 17:53:58,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:58,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149028139] [2022-03-03 17:53:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:58,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:59,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:59,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149028139] [2022-03-03 17:53:59,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149028139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:59,167 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:53:59,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:53:59,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614836044] [2022-03-03 17:53:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:59,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:53:59,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:53:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:53:59,168 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) [2022-03-03 17:54:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:00,007 INFO L93 Difference]: Finished difference Result 1288 states and 3163 transitions. [2022-03-03 17:54:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:54:00,008 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 [2022-03-03 17:54:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:00,009 INFO L225 Difference]: With dead ends: 1288 [2022-03-03 17:54:00,009 INFO L226 Difference]: Without dead ends: 1069 [2022-03-03 17:54:00,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:54:00,010 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:00,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2353 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-03-03 17:54:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1037. [2022-03-03 17:54:00,021 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) [2022-03-03 17:54:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 2571 transitions. [2022-03-03 17:54:00,022 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 2571 transitions. Word has length 79 [2022-03-03 17:54:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 2571 transitions. [2022-03-03 17:54:00,022 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) [2022-03-03 17:54:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 2571 transitions. [2022-03-03 17:54:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:00,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:00,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:00,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-03 17:54:00,024 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1175838728, now seen corresponding path program 67 times [2022-03-03 17:54:00,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:00,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98420739] [2022-03-03 17:54:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:00,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:00,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98420739] [2022-03-03 17:54:00,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98420739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:00,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:00,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:00,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909238832] [2022-03-03 17:54:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:00,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:00,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:00,349 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) [2022-03-03 17:54:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:01,274 INFO L93 Difference]: Finished difference Result 1349 states and 3312 transitions. [2022-03-03 17:54:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:01,274 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 [2022-03-03 17:54:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:01,276 INFO L225 Difference]: With dead ends: 1349 [2022-03-03 17:54:01,276 INFO L226 Difference]: Without dead ends: 1064 [2022-03-03 17:54:01,276 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 [2022-03-03 17:54:01,276 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 [2022-03-03 17:54:01,276 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] [2022-03-03 17:54:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-03-03 17:54:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1033. [2022-03-03 17:54:01,285 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) [2022-03-03 17:54:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2564 transitions. [2022-03-03 17:54:01,286 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2564 transitions. Word has length 79 [2022-03-03 17:54:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:01,286 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2564 transitions. [2022-03-03 17:54:01,286 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) [2022-03-03 17:54:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2564 transitions. [2022-03-03 17:54:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:01,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:01,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:01,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-03 17:54:01,287 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1728401762, now seen corresponding path program 68 times [2022-03-03 17:54:01,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:01,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857169752] [2022-03-03 17:54:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:01,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:01,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857169752] [2022-03-03 17:54:01,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857169752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:01,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:01,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:01,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781433253] [2022-03-03 17:54:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:01,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:01,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:01,603 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) [2022-03-03 17:54:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:02,379 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-03-03 17:54:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:54:02,379 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 [2022-03-03 17:54:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:02,381 INFO L225 Difference]: With dead ends: 1287 [2022-03-03 17:54:02,381 INFO L226 Difference]: Without dead ends: 1157 [2022-03-03 17:54:02,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:54:02,381 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 260 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:02,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2284 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-03 17:54:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1101. [2022-03-03 17:54:02,391 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) [2022-03-03 17:54:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-03 17:54:02,393 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-03 17:54:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:02,393 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-03 17:54:02,393 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) [2022-03-03 17:54:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-03 17:54:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:02,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:02,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:02,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-03 17:54:02,394 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1713174368, now seen corresponding path program 69 times [2022-03-03 17:54:02,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:02,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008634651] [2022-03-03 17:54:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:02,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:02,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:02,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008634651] [2022-03-03 17:54:02,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008634651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:02,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:02,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:02,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814157141] [2022-03-03 17:54:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:02,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:02,700 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) [2022-03-03 17:54:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:03,564 INFO L93 Difference]: Finished difference Result 1282 states and 3172 transitions. [2022-03-03 17:54:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:54:03,564 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 [2022-03-03 17:54:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:03,568 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 17:54:03,568 INFO L226 Difference]: Without dead ends: 1184 [2022-03-03 17:54:03,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:03,569 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:03,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2349 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-03 17:54:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1105. [2022-03-03 17:54:03,580 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) [2022-03-03 17:54:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-03-03 17:54:03,582 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-03-03 17:54:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:03,582 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-03-03 17:54:03,582 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) [2022-03-03 17:54:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-03-03 17:54:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:03,584 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:03,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:03,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-03 17:54:03,584 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:03,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1867555650, now seen corresponding path program 70 times [2022-03-03 17:54:03,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:03,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679901509] [2022-03-03 17:54:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:03,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:03,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679901509] [2022-03-03 17:54:03,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679901509] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:03,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:03,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:03,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761232070] [2022-03-03 17:54:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:03,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:03,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:03,889 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) [2022-03-03 17:54:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:05,005 INFO L93 Difference]: Finished difference Result 1250 states and 3088 transitions. [2022-03-03 17:54:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:05,005 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 [2022-03-03 17:54:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:05,007 INFO L225 Difference]: With dead ends: 1250 [2022-03-03 17:54:05,007 INFO L226 Difference]: Without dead ends: 1137 [2022-03-03 17:54:05,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:54:05,007 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 279 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:05,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2283 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:54:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-03-03 17:54:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1093. [2022-03-03 17:54:05,016 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) [2022-03-03 17:54:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-03 17:54:05,017 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-03 17:54:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:05,018 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-03 17:54:05,018 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) [2022-03-03 17:54:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-03 17:54:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:05,019 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:05,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:05,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-03 17:54:05,019 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1308597058, now seen corresponding path program 71 times [2022-03-03 17:54:05,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:05,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310510590] [2022-03-03 17:54:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:05,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:05,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310510590] [2022-03-03 17:54:05,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310510590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:05,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:05,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:05,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994276811] [2022-03-03 17:54:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:05,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:05,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:05,333 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) [2022-03-03 17:54:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:06,564 INFO L93 Difference]: Finished difference Result 1300 states and 3213 transitions. [2022-03-03 17:54:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:54:06,565 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 [2022-03-03 17:54:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:06,566 INFO L225 Difference]: With dead ends: 1300 [2022-03-03 17:54:06,566 INFO L226 Difference]: Without dead ends: 1202 [2022-03-03 17:54:06,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:54:06,567 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 272 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:06,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2266 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:54:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-03-03 17:54:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1117. [2022-03-03 17:54:06,578 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) [2022-03-03 17:54:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-03 17:54:06,579 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-03 17:54:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:06,580 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-03 17:54:06,580 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) [2022-03-03 17:54:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-03 17:54:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:06,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:06,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:06,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-03 17:54:06,581 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash 7935834, now seen corresponding path program 72 times [2022-03-03 17:54:06,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:06,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49806622] [2022-03-03 17:54:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:06,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:06,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49806622] [2022-03-03 17:54:06,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49806622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:06,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:06,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:06,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991883829] [2022-03-03 17:54:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:06,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:06,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:06,942 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) [2022-03-03 17:54:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:07,755 INFO L93 Difference]: Finished difference Result 1268 states and 3125 transitions. [2022-03-03 17:54:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:07,755 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 [2022-03-03 17:54:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:07,757 INFO L225 Difference]: With dead ends: 1268 [2022-03-03 17:54:07,757 INFO L226 Difference]: Without dead ends: 1117 [2022-03-03 17:54:07,757 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 [2022-03-03 17:54:07,757 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 271 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:07,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2370 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-03-03 17:54:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1077. [2022-03-03 17:54:07,765 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) [2022-03-03 17:54:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-03 17:54:07,767 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-03 17:54:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:07,767 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-03 17:54:07,767 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) [2022-03-03 17:54:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-03 17:54:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:07,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:07,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:07,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-03 17:54:07,768 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash 862026942, now seen corresponding path program 73 times [2022-03-03 17:54:07,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:07,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939283615] [2022-03-03 17:54:07,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:07,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:08,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:08,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939283615] [2022-03-03 17:54:08,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939283615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:08,106 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:08,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:08,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233952783] [2022-03-03 17:54:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:08,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:08,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:08,107 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) [2022-03-03 17:54:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:09,165 INFO L93 Difference]: Finished difference Result 1335 states and 3299 transitions. [2022-03-03 17:54:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:54:09,165 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 [2022-03-03 17:54:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:09,167 INFO L225 Difference]: With dead ends: 1335 [2022-03-03 17:54:09,167 INFO L226 Difference]: Without dead ends: 1237 [2022-03-03 17:54:09,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:54:09,168 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 281 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:09,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2639 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-03 17:54:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1105. [2022-03-03 17:54:09,177 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) [2022-03-03 17:54:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-03-03 17:54:09,179 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-03-03 17:54:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:09,179 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-03-03 17:54:09,179 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) [2022-03-03 17:54:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-03-03 17:54:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:09,180 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:09,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:09,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-03 17:54:09,181 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2116407462, now seen corresponding path program 74 times [2022-03-03 17:54:09,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:09,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45795214] [2022-03-03 17:54:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:09,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:09,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45795214] [2022-03-03 17:54:09,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45795214] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:09,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:09,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:09,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945725480] [2022-03-03 17:54:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:09,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:09,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:09,523 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) [2022-03-03 17:54:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:10,490 INFO L93 Difference]: Finished difference Result 1291 states and 3182 transitions. [2022-03-03 17:54:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:54:10,490 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 [2022-03-03 17:54:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:10,492 INFO L225 Difference]: With dead ends: 1291 [2022-03-03 17:54:10,492 INFO L226 Difference]: Without dead ends: 1156 [2022-03-03 17:54:10,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:54:10,492 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 301 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:10,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2504 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-03-03 17:54:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1081. [2022-03-03 17:54:10,502 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) [2022-03-03 17:54:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-03-03 17:54:10,503 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-03-03 17:54:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:10,504 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-03-03 17:54:10,504 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) [2022-03-03 17:54:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-03-03 17:54:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:10,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:10,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:10,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-03 17:54:10,505 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1048044804, now seen corresponding path program 75 times [2022-03-03 17:54:10,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:10,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801264486] [2022-03-03 17:54:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:10,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:10,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801264486] [2022-03-03 17:54:10,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801264486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:10,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:10,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:10,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234950989] [2022-03-03 17:54:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:10,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:10,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:10,817 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) [2022-03-03 17:54:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:11,619 INFO L93 Difference]: Finished difference Result 1279 states and 3149 transitions. [2022-03-03 17:54:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:11,619 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 [2022-03-03 17:54:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:11,620 INFO L225 Difference]: With dead ends: 1279 [2022-03-03 17:54:11,620 INFO L226 Difference]: Without dead ends: 1109 [2022-03-03 17:54:11,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:11,621 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 304 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:11,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2297 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-03 17:54:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1069. [2022-03-03 17:54:11,629 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) [2022-03-03 17:54:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-03 17:54:11,630 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-03 17:54:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:11,630 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-03 17:54:11,630 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) [2022-03-03 17:54:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-03 17:54:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:11,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:11,632 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] [2022-03-03 17:54:11,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-03 17:54:11,632 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 926730080, now seen corresponding path program 76 times [2022-03-03 17:54:11,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:11,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978918403] [2022-03-03 17:54:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:11,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:11,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978918403] [2022-03-03 17:54:11,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978918403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:11,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:11,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:11,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733877249] [2022-03-03 17:54:11,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:11,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:11,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:11,935 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) [2022-03-03 17:54:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:13,790 INFO L93 Difference]: Finished difference Result 1333 states and 3285 transitions. [2022-03-03 17:54:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:54:13,791 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 [2022-03-03 17:54:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:13,792 INFO L225 Difference]: With dead ends: 1333 [2022-03-03 17:54:13,792 INFO L226 Difference]: Without dead ends: 1235 [2022-03-03 17:54:13,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:54:13,793 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 304 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:13,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2549 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:54:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-03 17:54:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1117. [2022-03-03 17:54:13,805 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) [2022-03-03 17:54:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-03 17:54:13,807 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-03 17:54:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-03 17:54:13,807 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) [2022-03-03 17:54:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-03 17:54:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:13,809 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:13,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:13,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-03 17:54:13,809 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2051704324, now seen corresponding path program 77 times [2022-03-03 17:54:13,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:13,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174482930] [2022-03-03 17:54:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:14,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:14,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174482930] [2022-03-03 17:54:14,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174482930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:14,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:14,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:14,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800073908] [2022-03-03 17:54:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:14,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:14,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:14,127 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) [2022-03-03 17:54:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:15,158 INFO L93 Difference]: Finished difference Result 1301 states and 3197 transitions. [2022-03-03 17:54:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:54:15,159 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 [2022-03-03 17:54:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:15,160 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:54:15,160 INFO L226 Difference]: Without dead ends: 1166 [2022-03-03 17:54:15,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:54:15,160 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 302 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:15,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2663 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-03 17:54:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1093. [2022-03-03 17:54:15,169 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) [2022-03-03 17:54:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-03-03 17:54:15,170 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-03-03 17:54:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:15,170 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-03-03 17:54:15,170 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) [2022-03-03 17:54:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-03-03 17:54:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:15,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:15,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:15,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-03 17:54:15,172 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 875257408, now seen corresponding path program 78 times [2022-03-03 17:54:15,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:15,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130909482] [2022-03-03 17:54:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:15,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:15,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130909482] [2022-03-03 17:54:15,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130909482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:15,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:15,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:15,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651092909] [2022-03-03 17:54:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:15,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:15,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:15,475 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) [2022-03-03 17:54:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:16,284 INFO L93 Difference]: Finished difference Result 1277 states and 3131 transitions. [2022-03-03 17:54:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:16,284 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 [2022-03-03 17:54:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:16,286 INFO L225 Difference]: With dead ends: 1277 [2022-03-03 17:54:16,286 INFO L226 Difference]: Without dead ends: 1081 [2022-03-03 17:54:16,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:16,286 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 286 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:16,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2594 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-03 17:54:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1053. [2022-03-03 17:54:16,294 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) [2022-03-03 17:54:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-03 17:54:16,295 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-03 17:54:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:16,295 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-03 17:54:16,295 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) [2022-03-03 17:54:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-03 17:54:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:16,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:16,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:16,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-03 17:54:16,296 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash 951326560, now seen corresponding path program 79 times [2022-03-03 17:54:16,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:16,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721107962] [2022-03-03 17:54:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:16,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:16,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:16,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721107962] [2022-03-03 17:54:16,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721107962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:16,639 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:16,639 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:54:16,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662373736] [2022-03-03 17:54:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:16,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:54:16,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:54:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:54:16,639 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) [2022-03-03 17:54:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:17,861 INFO L93 Difference]: Finished difference Result 1365 states and 3369 transitions. [2022-03-03 17:54:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:54:17,862 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 [2022-03-03 17:54:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:17,863 INFO L225 Difference]: With dead ends: 1365 [2022-03-03 17:54:17,863 INFO L226 Difference]: Without dead ends: 1267 [2022-03-03 17:54:17,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:54:17,864 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 323 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:17,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2712 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-03 17:54:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1105. [2022-03-03 17:54:17,873 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) [2022-03-03 17:54:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-03-03 17:54:17,874 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-03-03 17:54:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:17,874 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-03-03 17:54:17,874 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) [2022-03-03 17:54:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-03-03 17:54:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:17,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:17,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:17,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-03 17:54:17,876 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2027107844, now seen corresponding path program 80 times [2022-03-03 17:54:17,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:17,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177646907] [2022-03-03 17:54:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:18,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:18,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177646907] [2022-03-03 17:54:18,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177646907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:18,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:18,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:54:18,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620832339] [2022-03-03 17:54:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:18,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:54:18,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:54:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:54:18,277 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) [2022-03-03 17:54:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:19,530 INFO L93 Difference]: Finished difference Result 1321 states and 3252 transitions. [2022-03-03 17:54:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:54:19,531 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 [2022-03-03 17:54:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:19,532 INFO L225 Difference]: With dead ends: 1321 [2022-03-03 17:54:19,532 INFO L226 Difference]: Without dead ends: 1186 [2022-03-03 17:54:19,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:54:19,532 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 340 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:19,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2982 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:54:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-03 17:54:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1081. [2022-03-03 17:54:19,546 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) [2022-03-03 17:54:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2680 transitions. [2022-03-03 17:54:19,547 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2680 transitions. Word has length 79 [2022-03-03 17:54:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:19,547 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2680 transitions. [2022-03-03 17:54:19,547 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) [2022-03-03 17:54:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2680 transitions. [2022-03-03 17:54:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:19,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:19,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:19,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-03 17:54:19,549 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 899853888, now seen corresponding path program 81 times [2022-03-03 17:54:19,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:19,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449278399] [2022-03-03 17:54:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:19,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:19,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449278399] [2022-03-03 17:54:19,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449278399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:19,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:19,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:19,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509987218] [2022-03-03 17:54:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:19,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:19,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:19,856 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) [2022-03-03 17:54:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:20,797 INFO L93 Difference]: Finished difference Result 1285 states and 3153 transitions. [2022-03-03 17:54:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:54:20,797 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 [2022-03-03 17:54:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:20,799 INFO L225 Difference]: With dead ends: 1285 [2022-03-03 17:54:20,799 INFO L226 Difference]: Without dead ends: 1105 [2022-03-03 17:54:20,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:54:20,799 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 298 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:20,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2769 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-03-03 17:54:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1057. [2022-03-03 17:54:20,807 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) [2022-03-03 17:54:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2618 transitions. [2022-03-03 17:54:20,809 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2618 transitions. Word has length 79 [2022-03-03 17:54:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:20,809 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2618 transitions. [2022-03-03 17:54:20,809 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) [2022-03-03 17:54:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2618 transitions. [2022-03-03 17:54:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:20,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:20,810 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] [2022-03-03 17:54:20,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-03 17:54:20,810 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1409621288, now seen corresponding path program 82 times [2022-03-03 17:54:20,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:20,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388614426] [2022-03-03 17:54:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:21,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:21,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388614426] [2022-03-03 17:54:21,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388614426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:21,119 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:21,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:21,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159273377] [2022-03-03 17:54:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:21,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:21,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:21,120 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) [2022-03-03 17:54:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:21,892 INFO L93 Difference]: Finished difference Result 1300 states and 3188 transitions. [2022-03-03 17:54:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:21,892 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 [2022-03-03 17:54:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:21,894 INFO L225 Difference]: With dead ends: 1300 [2022-03-03 17:54:21,894 INFO L226 Difference]: Without dead ends: 1073 [2022-03-03 17:54:21,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:54:21,894 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 297 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:21,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2552 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-03 17:54:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1045. [2022-03-03 17:54:21,902 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) [2022-03-03 17:54:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2585 transitions. [2022-03-03 17:54:21,903 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2585 transitions. Word has length 79 [2022-03-03 17:54:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:21,903 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2585 transitions. [2022-03-03 17:54:21,904 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) [2022-03-03 17:54:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2585 transitions. [2022-03-03 17:54:21,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:21,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:21,905 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] [2022-03-03 17:54:21,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-03 17:54:21,905 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -944710466, now seen corresponding path program 83 times [2022-03-03 17:54:21,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:21,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032002878] [2022-03-03 17:54:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:22,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:22,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032002878] [2022-03-03 17:54:22,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032002878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:22,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:22,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:54:22,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855893074] [2022-03-03 17:54:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:22,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:54:22,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:54:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:54:22,226 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) [2022-03-03 17:54:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:23,628 INFO L93 Difference]: Finished difference Result 1361 states and 3354 transitions. [2022-03-03 17:54:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:54:23,629 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 [2022-03-03 17:54:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:23,630 INFO L225 Difference]: With dead ends: 1361 [2022-03-03 17:54:23,630 INFO L226 Difference]: Without dead ends: 1263 [2022-03-03 17:54:23,631 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 [2022-03-03 17:54:23,631 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 328 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:23,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2985 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:54:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-03 17:54:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1105. [2022-03-03 17:54:23,651 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) [2022-03-03 17:54:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-03-03 17:54:23,653 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-03-03 17:54:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:23,653 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-03-03 17:54:23,653 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) [2022-03-03 17:54:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-03-03 17:54:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:23,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:23,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:23,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-03 17:54:23,655 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 371822426, now seen corresponding path program 84 times [2022-03-03 17:54:23,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:23,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179626136] [2022-03-03 17:54:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:24,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:24,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179626136] [2022-03-03 17:54:24,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179626136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:24,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:24,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:54:24,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598099820] [2022-03-03 17:54:24,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:24,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:54:24,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:54:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:54:24,037 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) [2022-03-03 17:54:26,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:54:28,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:54:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:29,250 INFO L93 Difference]: Finished difference Result 1329 states and 3266 transitions. [2022-03-03 17:54:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:54:29,250 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 [2022-03-03 17:54:29,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:29,252 INFO L225 Difference]: With dead ends: 1329 [2022-03-03 17:54:29,252 INFO L226 Difference]: Without dead ends: 1194 [2022-03-03 17:54:29,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:54:29,252 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 266 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:29,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2980 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1135 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-03-03 17:54:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-03 17:54:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1093. [2022-03-03 17:54:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.480769230769231) internal successors, (2709), 1092 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) [2022-03-03 17:54:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2709 transitions. [2022-03-03 17:54:29,272 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2709 transitions. Word has length 79 [2022-03-03 17:54:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:29,272 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2709 transitions. [2022-03-03 17:54:29,272 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) [2022-03-03 17:54:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2709 transitions. [2022-03-03 17:54:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:29,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:29,273 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] [2022-03-03 17:54:29,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-03 17:54:29,273 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -156396990, now seen corresponding path program 85 times [2022-03-03 17:54:29,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:29,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979536327] [2022-03-03 17:54:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:29,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:29,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979536327] [2022-03-03 17:54:29,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979536327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:29,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:29,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:29,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2962079] [2022-03-03 17:54:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:29,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:29,584 INFO L87 Difference]: Start difference. First operand 1093 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) [2022-03-03 17:54:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:30,658 INFO L93 Difference]: Finished difference Result 1293 states and 3171 transitions. [2022-03-03 17:54:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:54:30,658 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 [2022-03-03 17:54:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:30,660 INFO L225 Difference]: With dead ends: 1293 [2022-03-03 17:54:30,660 INFO L226 Difference]: Without dead ends: 1101 [2022-03-03 17:54:30,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:54:30,660 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 301 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:30,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2604 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-03-03 17:54:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1057. [2022-03-03 17:54:30,669 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) [2022-03-03 17:54:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2614 transitions. [2022-03-03 17:54:30,670 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2614 transitions. Word has length 79 [2022-03-03 17:54:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:30,670 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2614 transitions. [2022-03-03 17:54:30,670 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) [2022-03-03 17:54:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2614 transitions. [2022-03-03 17:54:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:30,671 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:30,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:30,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-03 17:54:30,672 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:30,672 INFO L85 PathProgramCache]: Analyzing trace with hash 989308982, now seen corresponding path program 86 times [2022-03-03 17:54:30,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:30,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880289407] [2022-03-03 17:54:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:30,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:30,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880289407] [2022-03-03 17:54:30,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880289407] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:30,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:30,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:30,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752945579] [2022-03-03 17:54:30,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:30,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:30,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:30,986 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) [2022-03-03 17:54:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:31,798 INFO L93 Difference]: Finished difference Result 1304 states and 3195 transitions. [2022-03-03 17:54:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:54:31,798 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 [2022-03-03 17:54:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:31,800 INFO L225 Difference]: With dead ends: 1304 [2022-03-03 17:54:31,800 INFO L226 Difference]: Without dead ends: 1061 [2022-03-03 17:54:31,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:31,800 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 288 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:31,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2763 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-03 17:54:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-03 17:54:31,809 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) [2022-03-03 17:54:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-03 17:54:31,810 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-03 17:54:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:31,810 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-03 17:54:31,810 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) [2022-03-03 17:54:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-03 17:54:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:31,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:31,811 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] [2022-03-03 17:54:31,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-03 17:54:31,812 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1571781226, now seen corresponding path program 87 times [2022-03-03 17:54:31,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:31,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586949902] [2022-03-03 17:54:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:32,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:32,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586949902] [2022-03-03 17:54:32,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586949902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:32,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:32,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:32,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240317479] [2022-03-03 17:54:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:32,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:32,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:32,161 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) [2022-03-03 17:54:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:32,987 INFO L93 Difference]: Finished difference Result 1298 states and 3178 transitions. [2022-03-03 17:54:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:54:32,987 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 [2022-03-03 17:54:32,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:32,989 INFO L225 Difference]: With dead ends: 1298 [2022-03-03 17:54:32,989 INFO L226 Difference]: Without dead ends: 1029 [2022-03-03 17:54:32,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:32,989 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 297 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:32,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2679 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-03-03 17:54:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1013. [2022-03-03 17:54:32,997 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) [2022-03-03 17:54:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2509 transitions. [2022-03-03 17:54:32,998 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2509 transitions. Word has length 79 [2022-03-03 17:54:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:32,998 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2509 transitions. [2022-03-03 17:54:32,998 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) [2022-03-03 17:54:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2509 transitions. [2022-03-03 17:54:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:32,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:32,999 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] [2022-03-03 17:54:32,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-03 17:54:33,000 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash 881796286, now seen corresponding path program 88 times [2022-03-03 17:54:33,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:33,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185149326] [2022-03-03 17:54:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:33,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:33,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185149326] [2022-03-03 17:54:33,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185149326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:33,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:33,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:54:33,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10683617] [2022-03-03 17:54:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:33,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:54:33,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:54:33,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:54:33,414 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) [2022-03-03 17:54:36,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:54:38,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:54:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:38,878 INFO L93 Difference]: Finished difference Result 1400 states and 3425 transitions. [2022-03-03 17:54:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:54:38,878 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 [2022-03-03 17:54:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:38,880 INFO L225 Difference]: With dead ends: 1400 [2022-03-03 17:54:38,880 INFO L226 Difference]: Without dead ends: 1302 [2022-03-03 17:54:38,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=3161, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:54:38,880 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 378 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:38,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2999 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1146 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-03-03 17:54:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-03-03 17:54:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1053. [2022-03-03 17:54:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.48574144486692) internal successors, (2615), 1052 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2615 transitions. [2022-03-03 17:54:38,891 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2615 transitions. Word has length 79 [2022-03-03 17:54:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:38,891 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2615 transitions. [2022-03-03 17:54:38,891 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) [2022-03-03 17:54:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2615 transitions. [2022-03-03 17:54:38,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:38,892 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:38,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:38,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-03 17:54:38,892 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1596033564, now seen corresponding path program 89 times [2022-03-03 17:54:38,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:38,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372488324] [2022-03-03 17:54:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:39,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:39,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372488324] [2022-03-03 17:54:39,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372488324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:39,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:39,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:54:39,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841879526] [2022-03-03 17:54:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:39,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:54:39,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:54:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:54:39,340 INFO L87 Difference]: Start difference. First operand 1053 states and 2615 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) [2022-03-03 17:54:41,964 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 [] [2022-03-03 17:54:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:42,613 INFO L93 Difference]: Finished difference Result 1293 states and 3183 transitions. [2022-03-03 17:54:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:54:42,614 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 [2022-03-03 17:54:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:42,615 INFO L225 Difference]: With dead ends: 1293 [2022-03-03 17:54:42,615 INFO L226 Difference]: Without dead ends: 1142 [2022-03-03 17:54:42,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=2344, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:54:42,616 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 312 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:42,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2831 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 17:54:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-03-03 17:54:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1053. [2022-03-03 17:54:42,624 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) [2022-03-03 17:54:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-03 17:54:42,625 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-03 17:54:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:42,625 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-03 17:54:42,625 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) [2022-03-03 17:54:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-03 17:54:42,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:42,627 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:42,627 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] [2022-03-03 17:54:42,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-03 17:54:42,627 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 830323614, now seen corresponding path program 90 times [2022-03-03 17:54:42,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:42,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966112989] [2022-03-03 17:54:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:42,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:42,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966112989] [2022-03-03 17:54:42,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966112989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:42,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:42,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:54:42,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796112553] [2022-03-03 17:54:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:42,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:54:42,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:54:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:54:42,988 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) [2022-03-03 17:54:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:44,113 INFO L93 Difference]: Finished difference Result 1241 states and 3040 transitions. [2022-03-03 17:54:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:54:44,113 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 [2022-03-03 17:54:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:44,115 INFO L225 Difference]: With dead ends: 1241 [2022-03-03 17:54:44,115 INFO L226 Difference]: Without dead ends: 1061 [2022-03-03 17:54:44,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:54:44,115 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 289 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:44,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 3017 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-03 17:54:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-03 17:54:44,123 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) [2022-03-03 17:54:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-03 17:54:44,124 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-03 17:54:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:44,125 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-03 17:54:44,125 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) [2022-03-03 17:54:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-03 17:54:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:44,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:44,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:44,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-03 17:54:44,126 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1479151562, now seen corresponding path program 91 times [2022-03-03 17:54:44,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:44,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476453351] [2022-03-03 17:54:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:44,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:44,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476453351] [2022-03-03 17:54:44,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476453351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:44,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:44,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:44,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434089805] [2022-03-03 17:54:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:44,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:44,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:44,506 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) [2022-03-03 17:54:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:45,422 INFO L93 Difference]: Finished difference Result 1264 states and 3097 transitions. [2022-03-03 17:54:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:54:45,423 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 [2022-03-03 17:54:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:45,424 INFO L225 Difference]: With dead ends: 1264 [2022-03-03 17:54:45,424 INFO L226 Difference]: Without dead ends: 1045 [2022-03-03 17:54:45,424 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 [2022-03-03 17:54:45,424 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 288 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:45,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2606 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-03-03 17:54:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1025. [2022-03-03 17:54:45,432 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) [2022-03-03 17:54:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2538 transitions. [2022-03-03 17:54:45,433 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2538 transitions. Word has length 79 [2022-03-03 17:54:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:45,433 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 2538 transitions. [2022-03-03 17:54:45,433 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) [2022-03-03 17:54:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2538 transitions. [2022-03-03 17:54:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:45,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:45,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:45,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-03 17:54:45,435 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash 475915336, now seen corresponding path program 92 times [2022-03-03 17:54:45,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:45,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301025678] [2022-03-03 17:54:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:45,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:45,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301025678] [2022-03-03 17:54:45,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301025678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:45,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:45,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:45,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911849989] [2022-03-03 17:54:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:45,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:45,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:45,813 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) [2022-03-03 17:54:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:46,773 INFO L93 Difference]: Finished difference Result 1294 states and 3167 transitions. [2022-03-03 17:54:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:54:46,773 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 [2022-03-03 17:54:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:46,775 INFO L225 Difference]: With dead ends: 1294 [2022-03-03 17:54:46,775 INFO L226 Difference]: Without dead ends: 1033 [2022-03-03 17:54:46,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1806, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:54:46,775 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 336 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 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 [2022-03-03 17:54:46,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2684 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-03-03 17:54:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1017. [2022-03-03 17:54:46,783 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) [2022-03-03 17:54:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2516 transitions. [2022-03-03 17:54:46,784 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2516 transitions. Word has length 79 [2022-03-03 17:54:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:46,785 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2516 transitions. [2022-03-03 17:54:46,785 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) [2022-03-03 17:54:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2516 transitions. [2022-03-03 17:54:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:46,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:46,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:46,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-03 17:54:46,786 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:46,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1425757590, now seen corresponding path program 93 times [2022-03-03 17:54:46,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:46,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435996843] [2022-03-03 17:54:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:46,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:47,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:47,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435996843] [2022-03-03 17:54:47,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435996843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:47,122 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:47,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:47,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376828568] [2022-03-03 17:54:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:47,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:47,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:47,123 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) [2022-03-03 17:54:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:48,013 INFO L93 Difference]: Finished difference Result 1289 states and 3147 transitions. [2022-03-03 17:54:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:54:48,013 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 [2022-03-03 17:54:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:48,014 INFO L225 Difference]: With dead ends: 1289 [2022-03-03 17:54:48,014 INFO L226 Difference]: Without dead ends: 991 [2022-03-03 17:54:48,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:54:48,015 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 311 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:48,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2683 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-03 17:54:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-03-03 17:54:48,022 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) [2022-03-03 17:54:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2465 transitions. [2022-03-03 17:54:48,023 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2465 transitions. Word has length 79 [2022-03-03 17:54:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:48,023 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 2465 transitions. [2022-03-03 17:54:48,024 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) [2022-03-03 17:54:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2465 transitions. [2022-03-03 17:54:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:48,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:48,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:48,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-03 17:54:48,025 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash 192804102, now seen corresponding path program 94 times [2022-03-03 17:54:48,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:48,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118175769] [2022-03-03 17:54:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:48,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:48,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118175769] [2022-03-03 17:54:48,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118175769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:48,337 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:48,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:48,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188851373] [2022-03-03 17:54:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:48,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:48,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:48,338 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) [2022-03-03 17:54:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:49,311 INFO L93 Difference]: Finished difference Result 1337 states and 3346 transitions. [2022-03-03 17:54:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:54:49,311 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 [2022-03-03 17:54:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:49,313 INFO L225 Difference]: With dead ends: 1337 [2022-03-03 17:54:49,313 INFO L226 Difference]: Without dead ends: 1207 [2022-03-03 17:54:49,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:54:49,313 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 279 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:49,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2454 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-03 17:54:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-03-03 17:54:49,323 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) [2022-03-03 17:54:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2754 transitions. [2022-03-03 17:54:49,325 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2754 transitions. Word has length 79 [2022-03-03 17:54:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:49,325 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2754 transitions. [2022-03-03 17:54:49,325 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) [2022-03-03 17:54:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2754 transitions. [2022-03-03 17:54:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:49,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:49,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:49,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-03 17:54:49,327 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -660587064, now seen corresponding path program 95 times [2022-03-03 17:54:49,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:49,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948965674] [2022-03-03 17:54:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:49,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:49,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948965674] [2022-03-03 17:54:49,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948965674] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:49,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:49,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:49,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612886979] [2022-03-03 17:54:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:49,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:49,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:49,648 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) [2022-03-03 17:54:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:50,763 INFO L93 Difference]: Finished difference Result 1348 states and 3366 transitions. [2022-03-03 17:54:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:54:50,764 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 [2022-03-03 17:54:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:50,765 INFO L225 Difference]: With dead ends: 1348 [2022-03-03 17:54:50,765 INFO L226 Difference]: Without dead ends: 1250 [2022-03-03 17:54:50,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2228, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:54:50,766 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 309 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:50,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2467 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-03 17:54:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1103. [2022-03-03 17:54:50,776 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) [2022-03-03 17:54:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2761 transitions. [2022-03-03 17:54:50,778 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2761 transitions. Word has length 79 [2022-03-03 17:54:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:50,778 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2761 transitions. [2022-03-03 17:54:50,778 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) [2022-03-03 17:54:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2761 transitions. [2022-03-03 17:54:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:50,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:50,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:50,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-03 17:54:50,780 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:50,780 INFO L85 PathProgramCache]: Analyzing trace with hash 53650214, now seen corresponding path program 96 times [2022-03-03 17:54:50,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:50,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838460512] [2022-03-03 17:54:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:50,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:51,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:51,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838460512] [2022-03-03 17:54:51,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838460512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:51,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:51,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:54:51,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494181054] [2022-03-03 17:54:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:51,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:54:51,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:54:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:54:51,135 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) [2022-03-03 17:54:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:52,219 INFO L93 Difference]: Finished difference Result 1331 states and 3317 transitions. [2022-03-03 17:54:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:54:52,219 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 [2022-03-03 17:54:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:52,221 INFO L225 Difference]: With dead ends: 1331 [2022-03-03 17:54:52,221 INFO L226 Difference]: Without dead ends: 1218 [2022-03-03 17:54:52,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:54:52,221 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 318 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:52,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2478 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-03-03 17:54:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1091. [2022-03-03 17:54:52,238 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) [2022-03-03 17:54:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2728 transitions. [2022-03-03 17:54:52,239 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2728 transitions. Word has length 79 [2022-03-03 17:54:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:52,239 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2728 transitions. [2022-03-03 17:54:52,239 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) [2022-03-03 17:54:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2728 transitions. [2022-03-03 17:54:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:52,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:52,241 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] [2022-03-03 17:54:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-03 17:54:52,241 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash 379098440, now seen corresponding path program 97 times [2022-03-03 17:54:52,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:52,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580635574] [2022-03-03 17:54:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:52,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:52,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580635574] [2022-03-03 17:54:52,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580635574] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:52,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:52,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:52,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125214053] [2022-03-03 17:54:52,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:52,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:52,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:52,553 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) [2022-03-03 17:54:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:53,441 INFO L93 Difference]: Finished difference Result 1309 states and 3257 transitions. [2022-03-03 17:54:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:53,441 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 [2022-03-03 17:54:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:53,443 INFO L225 Difference]: With dead ends: 1309 [2022-03-03 17:54:53,443 INFO L226 Difference]: Without dead ends: 1159 [2022-03-03 17:54:53,443 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 [2022-03-03 17:54:53,443 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 [2022-03-03 17:54:53,443 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] [2022-03-03 17:54:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-03-03 17:54:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1087. [2022-03-03 17:54:53,452 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) [2022-03-03 17:54:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2717 transitions. [2022-03-03 17:54:53,453 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2717 transitions. Word has length 79 [2022-03-03 17:54:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:53,453 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2717 transitions. [2022-03-03 17:54:53,453 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) [2022-03-03 17:54:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2717 transitions. [2022-03-03 17:54:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:53,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:53,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:53,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-03 17:54:53,455 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:53,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1240680774, now seen corresponding path program 98 times [2022-03-03 17:54:53,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:53,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416720745] [2022-03-03 17:54:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:53,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:53,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:53,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416720745] [2022-03-03 17:54:53,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416720745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:53,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:53,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:53,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071630379] [2022-03-03 17:54:53,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:53,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:53,779 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) [2022-03-03 17:54:56,661 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 [] [2022-03-03 17:54:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:57,032 INFO L93 Difference]: Finished difference Result 1402 states and 3456 transitions. [2022-03-03 17:54:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:54:57,032 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 [2022-03-03 17:54:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:57,034 INFO L225 Difference]: With dead ends: 1402 [2022-03-03 17:54:57,034 INFO L226 Difference]: Without dead ends: 1304 [2022-03-03 17:54:57,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:54:57,034 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 313 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:57,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2510 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1012 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 17:54:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-03-03 17:54:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1099. [2022-03-03 17:54:57,044 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) [2022-03-03 17:54:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-03 17:54:57,045 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-03 17:54:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:57,045 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-03 17:54:57,045 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) [2022-03-03 17:54:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-03 17:54:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:57,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:57,046 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] [2022-03-03 17:54:57,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-03 17:54:57,046 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1954918052, now seen corresponding path program 99 times [2022-03-03 17:54:57,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:57,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063174989] [2022-03-03 17:54:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:57,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:57,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063174989] [2022-03-03 17:54:57,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063174989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:57,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:57,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:57,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157381466] [2022-03-03 17:54:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:57,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:57,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:57,442 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) [2022-03-03 17:54:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:58,471 INFO L93 Difference]: Finished difference Result 1321 states and 3277 transitions. [2022-03-03 17:54:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:54:58,471 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 [2022-03-03 17:54:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:58,472 INFO L225 Difference]: With dead ends: 1321 [2022-03-03 17:54:58,473 INFO L226 Difference]: Without dead ends: 1146 [2022-03-03 17:54:58,473 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 [2022-03-03 17:54:58,473 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 283 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:58,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2381 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-03-03 17:54:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1063. [2022-03-03 17:54:58,482 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) [2022-03-03 17:54:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2655 transitions. [2022-03-03 17:54:58,483 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2655 transitions. Word has length 79 [2022-03-03 17:54:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:58,483 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2655 transitions. [2022-03-03 17:54:58,483 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) [2022-03-03 17:54:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2655 transitions. [2022-03-03 17:54:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:58,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:58,484 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] [2022-03-03 17:54:58,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-03 17:54:58,484 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash 846263976, now seen corresponding path program 100 times [2022-03-03 17:54:58,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:58,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686688014] [2022-03-03 17:54:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:58,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:58,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686688014] [2022-03-03 17:54:58,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686688014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:54:58,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:54:58,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:54:58,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845516337] [2022-03-03 17:54:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:54:58,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:54:58,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:54:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:54:58,828 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) [2022-03-03 17:54:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:59,769 INFO L93 Difference]: Finished difference Result 1301 states and 3239 transitions. [2022-03-03 17:54:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:54:59,769 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 [2022-03-03 17:54:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:59,771 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:54:59,771 INFO L226 Difference]: Without dead ends: 1171 [2022-03-03 17:54:59,771 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 [2022-03-03 17:54:59,772 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 251 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:59,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2502 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:59,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-03 17:54:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-03-03 17:54:59,783 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) [2022-03-03 17:54:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-03 17:54:59,785 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-03 17:54:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:59,785 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-03 17:54:59,785 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) [2022-03-03 17:54:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-03 17:54:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:54:59,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:59,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:59,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-03 17:54:59,787 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash -7127190, now seen corresponding path program 101 times [2022-03-03 17:54:59,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:59,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994095148] [2022-03-03 17:54:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:00,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:00,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994095148] [2022-03-03 17:55:00,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994095148] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:00,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:00,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:00,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773324628] [2022-03-03 17:55:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:00,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:00,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:00,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:00,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:00,140 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) [2022-03-03 17:55:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:01,165 INFO L93 Difference]: Finished difference Result 1292 states and 3208 transitions. [2022-03-03 17:55:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:55:01,165 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 [2022-03-03 17:55:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:01,167 INFO L225 Difference]: With dead ends: 1292 [2022-03-03 17:55:01,167 INFO L226 Difference]: Without dead ends: 1194 [2022-03-03 17:55:01,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:55:01,167 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 296 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:01,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2393 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-03 17:55:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-03-03 17:55:01,178 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) [2022-03-03 17:55:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-03 17:55:01,179 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-03 17:55:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:01,179 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-03 17:55:01,180 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) [2022-03-03 17:55:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-03 17:55:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:01,181 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:01,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:01,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-03 17:55:01,181 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash 707110088, now seen corresponding path program 102 times [2022-03-03 17:55:01,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:01,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023114053] [2022-03-03 17:55:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:01,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:01,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:01,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023114053] [2022-03-03 17:55:01,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023114053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:01,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:01,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:01,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546716196] [2022-03-03 17:55:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:01,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:01,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:01,526 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) [2022-03-03 17:55:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:02,517 INFO L93 Difference]: Finished difference Result 1275 states and 3159 transitions. [2022-03-03 17:55:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:55:02,517 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 [2022-03-03 17:55:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:02,518 INFO L225 Difference]: With dead ends: 1275 [2022-03-03 17:55:02,518 INFO L226 Difference]: Without dead ends: 1162 [2022-03-03 17:55:02,518 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 [2022-03-03 17:55:02,519 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 305 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:02,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2322 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-03 17:55:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-03-03 17:55:02,527 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) [2022-03-03 17:55:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-03-03 17:55:02,529 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-03-03 17:55:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:02,529 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-03-03 17:55:02,529 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) [2022-03-03 17:55:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-03-03 17:55:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:02,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:02,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:02,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-03 17:55:02,531 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1032558314, now seen corresponding path program 103 times [2022-03-03 17:55:02,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:02,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555097653] [2022-03-03 17:55:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:02,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:02,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555097653] [2022-03-03 17:55:02,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555097653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:02,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:02,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:02,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793009449] [2022-03-03 17:55:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:02,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:02,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:02,887 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) [2022-03-03 17:55:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:03,726 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-03 17:55:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:03,726 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 [2022-03-03 17:55:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:03,728 INFO L225 Difference]: With dead ends: 1281 [2022-03-03 17:55:03,728 INFO L226 Difference]: Without dead ends: 1131 [2022-03-03 17:55:03,728 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 [2022-03-03 17:55:03,728 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 256 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:03,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2290 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-03 17:55:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1071. [2022-03-03 17:55:03,736 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) [2022-03-03 17:55:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2673 transitions. [2022-03-03 17:55:03,738 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2673 transitions. Word has length 79 [2022-03-03 17:55:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:03,738 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2673 transitions. [2022-03-03 17:55:03,738 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) [2022-03-03 17:55:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2673 transitions. [2022-03-03 17:55:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:03,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:03,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:03,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-03 17:55:03,739 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash 325977350, now seen corresponding path program 104 times [2022-03-03 17:55:03,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:03,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689317549] [2022-03-03 17:55:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:04,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:04,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689317549] [2022-03-03 17:55:04,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689317549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:04,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:04,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:04,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789172024] [2022-03-03 17:55:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:04,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:04,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:04,056 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) [2022-03-03 17:55:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:04,986 INFO L93 Difference]: Finished difference Result 1305 states and 3234 transitions. [2022-03-03 17:55:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:55:04,987 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 [2022-03-03 17:55:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:04,988 INFO L225 Difference]: With dead ends: 1305 [2022-03-03 17:55:04,988 INFO L226 Difference]: Without dead ends: 1103 [2022-03-03 17:55:04,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:55:04,989 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 272 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:04,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2193 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-03 17:55:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-03 17:55:04,997 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) [2022-03-03 17:55:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2611 transitions. [2022-03-03 17:55:04,998 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2611 transitions. Word has length 79 [2022-03-03 17:55:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:04,998 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2611 transitions. [2022-03-03 17:55:04,998 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) [2022-03-03 17:55:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2611 transitions. [2022-03-03 17:55:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:04,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:04,999 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] [2022-03-03 17:55:04,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-03 17:55:04,999 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1521068648, now seen corresponding path program 105 times [2022-03-03 17:55:05,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:05,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182809929] [2022-03-03 17:55:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:05,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182809929] [2022-03-03 17:55:05,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182809929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:05,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:05,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:05,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424293946] [2022-03-03 17:55:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:05,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:05,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:05,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:05,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:05,414 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) [2022-03-03 17:55:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:06,607 INFO L93 Difference]: Finished difference Result 1329 states and 3316 transitions. [2022-03-03 17:55:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:55:06,607 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 [2022-03-03 17:55:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:06,609 INFO L225 Difference]: With dead ends: 1329 [2022-03-03 17:55:06,609 INFO L226 Difference]: Without dead ends: 1199 [2022-03-03 17:55:06,609 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 [2022-03-03 17:55:06,609 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 338 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:06,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2523 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-03-03 17:55:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1087. [2022-03-03 17:55:06,618 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) [2022-03-03 17:55:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-03 17:55:06,619 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-03 17:55:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-03 17:55:06,619 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) [2022-03-03 17:55:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-03 17:55:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:06,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:06,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:06,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-03 17:55:06,621 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash 667677482, now seen corresponding path program 106 times [2022-03-03 17:55:06,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:06,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676369977] [2022-03-03 17:55:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:06,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:06,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676369977] [2022-03-03 17:55:06,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676369977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:06,965 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:06,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:06,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195544289] [2022-03-03 17:55:06,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:06,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:06,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:06,966 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) [2022-03-03 17:55:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:08,057 INFO L93 Difference]: Finished difference Result 1320 states and 3285 transitions. [2022-03-03 17:55:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:55:08,058 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 [2022-03-03 17:55:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:08,059 INFO L225 Difference]: With dead ends: 1320 [2022-03-03 17:55:08,059 INFO L226 Difference]: Without dead ends: 1222 [2022-03-03 17:55:08,060 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 [2022-03-03 17:55:08,060 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 316 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:08,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2622 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-03 17:55:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1091. [2022-03-03 17:55:08,069 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) [2022-03-03 17:55:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-03 17:55:08,070 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-03 17:55:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:08,070 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-03 17:55:08,070 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) [2022-03-03 17:55:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-03 17:55:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:08,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:08,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:08,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-03 17:55:08,071 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1381914760, now seen corresponding path program 107 times [2022-03-03 17:55:08,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:08,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51099493] [2022-03-03 17:55:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:08,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:08,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51099493] [2022-03-03 17:55:08,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51099493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:08,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:08,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:08,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489050604] [2022-03-03 17:55:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:08,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:08,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:08,418 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) [2022-03-03 17:55:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:09,514 INFO L93 Difference]: Finished difference Result 1303 states and 3236 transitions. [2022-03-03 17:55:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:55:09,514 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 [2022-03-03 17:55:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:09,516 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 17:55:09,516 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 17:55:09,516 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 [2022-03-03 17:55:09,516 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:09,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2431 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 17:55:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-03-03 17:55:09,525 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) [2022-03-03 17:55:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-03 17:55:09,526 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-03 17:55:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:09,526 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-03 17:55:09,526 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) [2022-03-03 17:55:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-03 17:55:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:09,527 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:09,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:09,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-03 17:55:09,527 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1707362986, now seen corresponding path program 108 times [2022-03-03 17:55:09,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:09,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534373830] [2022-03-03 17:55:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:09,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:09,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:09,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534373830] [2022-03-03 17:55:09,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534373830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:09,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:09,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:09,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219714915] [2022-03-03 17:55:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:09,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:09,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:09,914 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) [2022-03-03 17:55:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:10,963 INFO L93 Difference]: Finished difference Result 1317 states and 3267 transitions. [2022-03-03 17:55:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:55:10,963 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 [2022-03-03 17:55:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:10,964 INFO L225 Difference]: With dead ends: 1317 [2022-03-03 17:55:10,965 INFO L226 Difference]: Without dead ends: 1167 [2022-03-03 17:55:10,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:55:10,965 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 294 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:10,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2552 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:10,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-03 17:55:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1075. [2022-03-03 17:55:10,976 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) [2022-03-03 17:55:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:55:10,978 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:55:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:10,978 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:55:10,978 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) [2022-03-03 17:55:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:55:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:10,980 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:10,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-03 17:55:10,980 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1726021976, now seen corresponding path program 109 times [2022-03-03 17:55:10,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:10,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983356001] [2022-03-03 17:55:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:11,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:11,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983356001] [2022-03-03 17:55:11,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983356001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:11,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:11,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:11,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319482238] [2022-03-03 17:55:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:11,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:11,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:11,311 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) [2022-03-03 17:55:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:12,374 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-03 17:55:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:12,374 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 [2022-03-03 17:55:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:12,375 INFO L225 Difference]: With dead ends: 1298 [2022-03-03 17:55:12,376 INFO L226 Difference]: Without dead ends: 1200 [2022-03-03 17:55:12,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:55:12,376 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 247 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:12,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 2531 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-03 17:55:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-03-03 17:55:12,385 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) [2022-03-03 17:55:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 17:55:12,386 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 17:55:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:12,386 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 17:55:12,386 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) [2022-03-03 17:55:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 17:55:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:12,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:12,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:12,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-03 17:55:12,387 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:12,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash -409489084, now seen corresponding path program 110 times [2022-03-03 17:55:12,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:12,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501226828] [2022-03-03 17:55:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:12,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:12,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:12,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501226828] [2022-03-03 17:55:12,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501226828] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:12,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:12,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:12,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588867822] [2022-03-03 17:55:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:12,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:12,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:12,739 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) [2022-03-03 17:55:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:13,687 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-03 17:55:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:55:13,688 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 [2022-03-03 17:55:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:13,689 INFO L225 Difference]: With dead ends: 1266 [2022-03-03 17:55:13,689 INFO L226 Difference]: Without dead ends: 1107 [2022-03-03 17:55:13,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:55:13,689 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 246 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:13,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 2373 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-03 17:55:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-03 17:55:13,697 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) [2022-03-03 17:55:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2618 transitions. [2022-03-03 17:55:13,698 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2618 transitions. Word has length 79 [2022-03-03 17:55:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:13,698 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2618 transitions. [2022-03-03 17:55:13,699 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) [2022-03-03 17:55:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2618 transitions. [2022-03-03 17:55:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:13,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:13,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:13,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-03 17:55:13,700 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 924168038, now seen corresponding path program 111 times [2022-03-03 17:55:13,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:13,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76483773] [2022-03-03 17:55:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:14,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:14,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76483773] [2022-03-03 17:55:14,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76483773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:14,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:14,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:14,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084715219] [2022-03-03 17:55:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:14,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:14,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:14,082 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) [2022-03-03 17:55:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:15,134 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-03 17:55:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:55:15,134 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 [2022-03-03 17:55:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:15,136 INFO L225 Difference]: With dead ends: 1285 [2022-03-03 17:55:15,136 INFO L226 Difference]: Without dead ends: 1155 [2022-03-03 17:55:15,136 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 [2022-03-03 17:55:15,136 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 243 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-03 17:55:15,136 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] [2022-03-03 17:55:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-03 17:55:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-03 17:55:15,144 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) [2022-03-03 17:55:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-03 17:55:15,146 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-03 17:55:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-03 17:55:15,146 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) [2022-03-03 17:55:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-03 17:55:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:15,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:15,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:15,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-03 17:55:15,147 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash 70776872, now seen corresponding path program 112 times [2022-03-03 17:55:15,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:15,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646657631] [2022-03-03 17:55:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:15,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:15,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646657631] [2022-03-03 17:55:15,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646657631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:15,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:15,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:15,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240788573] [2022-03-03 17:55:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:15,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:15,508 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) [2022-03-03 17:55:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:16,406 INFO L93 Difference]: Finished difference Result 1272 states and 3149 transitions. [2022-03-03 17:55:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:55:16,406 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 [2022-03-03 17:55:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:16,408 INFO L225 Difference]: With dead ends: 1272 [2022-03-03 17:55:16,408 INFO L226 Difference]: Without dead ends: 1174 [2022-03-03 17:55:16,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:55:16,409 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 272 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2334 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 [2022-03-03 17:55:16,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2334 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-03 17:55:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1087. [2022-03-03 17:55:16,417 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) [2022-03-03 17:55:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:55:16,418 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:55:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:16,419 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:55:16,419 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) [2022-03-03 17:55:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:55:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:16,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:16,420 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] [2022-03-03 17:55:16,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-03 17:55:16,420 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 785014150, now seen corresponding path program 113 times [2022-03-03 17:55:16,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:16,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752660920] [2022-03-03 17:55:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:16,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:16,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752660920] [2022-03-03 17:55:16,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752660920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:16,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:16,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:16,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874031233] [2022-03-03 17:55:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:16,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:16,745 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) [2022-03-03 17:55:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:17,636 INFO L93 Difference]: Finished difference Result 1240 states and 3065 transitions. [2022-03-03 17:55:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:17,637 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 [2022-03-03 17:55:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:17,638 INFO L225 Difference]: With dead ends: 1240 [2022-03-03 17:55:17,638 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:55:17,639 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 [2022-03-03 17:55:17,639 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 284 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 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 [2022-03-03 17:55:17,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2262 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:55:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-03 17:55:17,647 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) [2022-03-03 17:55:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:55:17,648 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:55:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:17,648 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:55:17,648 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) [2022-03-03 17:55:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:55:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:17,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:17,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:17,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-03 17:55:17,650 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1343972742, now seen corresponding path program 114 times [2022-03-03 17:55:17,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:17,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978408127] [2022-03-03 17:55:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:17,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:17,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978408127] [2022-03-03 17:55:17,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978408127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:17,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:17,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:17,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065580369] [2022-03-03 17:55:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:17,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:17,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:17,964 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) [2022-03-03 17:55:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:19,244 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-03-03 17:55:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:55:19,244 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 [2022-03-03 17:55:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:19,246 INFO L225 Difference]: With dead ends: 1290 [2022-03-03 17:55:19,246 INFO L226 Difference]: Without dead ends: 1192 [2022-03-03 17:55:19,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:55:19,246 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 254 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:19,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2602 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:55:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-03 17:55:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1099. [2022-03-03 17:55:19,255 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) [2022-03-03 17:55:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 17:55:19,256 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 17:55:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 17:55:19,256 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) [2022-03-03 17:55:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 17:55:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:19,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:19,258 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] [2022-03-03 17:55:19,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-03 17:55:19,258 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:19,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1634461662, now seen corresponding path program 115 times [2022-03-03 17:55:19,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:19,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006167578] [2022-03-03 17:55:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:19,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:19,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006167578] [2022-03-03 17:55:19,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006167578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:19,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:19,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:19,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503785667] [2022-03-03 17:55:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:19,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:19,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:19,656 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) [2022-03-03 17:55:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:20,619 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-03-03 17:55:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:20,619 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 [2022-03-03 17:55:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:20,621 INFO L225 Difference]: With dead ends: 1258 [2022-03-03 17:55:20,621 INFO L226 Difference]: Without dead ends: 1107 [2022-03-03 17:55:20,621 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 [2022-03-03 17:55:20,621 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 276 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:20,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2352 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-03 17:55:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1059. [2022-03-03 17:55:20,629 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) [2022-03-03 17:55:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-03 17:55:20,630 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-03 17:55:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:20,631 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-03 17:55:20,631 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) [2022-03-03 17:55:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-03 17:55:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:20,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:20,632 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] [2022-03-03 17:55:20,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-03 17:55:20,632 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash -780370554, now seen corresponding path program 116 times [2022-03-03 17:55:20,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:20,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421914206] [2022-03-03 17:55:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:20,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:20,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421914206] [2022-03-03 17:55:20,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421914206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:20,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:20,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:20,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249219069] [2022-03-03 17:55:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:20,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:20,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:20,958 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) [2022-03-03 17:55:22,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:22,129 INFO L93 Difference]: Finished difference Result 1309 states and 3232 transitions. [2022-03-03 17:55:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:55:22,129 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 [2022-03-03 17:55:22,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:22,131 INFO L225 Difference]: With dead ends: 1309 [2022-03-03 17:55:22,131 INFO L226 Difference]: Without dead ends: 1211 [2022-03-03 17:55:22,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:55:22,131 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 289 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:22,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2509 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-03 17:55:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1087. [2022-03-03 17:55:22,140 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) [2022-03-03 17:55:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:55:22,141 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:55:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:55:22,141 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) [2022-03-03 17:55:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:55:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:22,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:22,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:22,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-03 17:55:22,142 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 536162338, now seen corresponding path program 117 times [2022-03-03 17:55:22,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:22,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999460253] [2022-03-03 17:55:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:22,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:22,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999460253] [2022-03-03 17:55:22,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999460253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:22,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:22,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:22,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63054025] [2022-03-03 17:55:22,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:22,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:22,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:22,552 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) [2022-03-03 17:55:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:23,756 INFO L93 Difference]: Finished difference Result 1265 states and 3115 transitions. [2022-03-03 17:55:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:55:23,756 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 [2022-03-03 17:55:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:23,757 INFO L225 Difference]: With dead ends: 1265 [2022-03-03 17:55:23,757 INFO L226 Difference]: Without dead ends: 1130 [2022-03-03 17:55:23,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:55:23,758 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 270 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2725 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 [2022-03-03 17:55:23,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2725 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-03-03 17:55:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1063. [2022-03-03 17:55:23,768 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) [2022-03-03 17:55:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-03 17:55:23,770 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-03 17:55:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:23,770 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-03 17:55:23,770 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) [2022-03-03 17:55:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-03 17:55:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:23,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:23,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:23,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-03 17:55:23,771 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash -594352692, now seen corresponding path program 118 times [2022-03-03 17:55:23,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:23,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729250475] [2022-03-03 17:55:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:24,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:24,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729250475] [2022-03-03 17:55:24,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729250475] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:24,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:24,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:24,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166394686] [2022-03-03 17:55:24,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:24,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:24,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:24,104 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) [2022-03-03 17:55:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:24,963 INFO L93 Difference]: Finished difference Result 1253 states and 3082 transitions. [2022-03-03 17:55:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:55:24,963 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 [2022-03-03 17:55:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:24,965 INFO L225 Difference]: With dead ends: 1253 [2022-03-03 17:55:24,965 INFO L226 Difference]: Without dead ends: 1071 [2022-03-03 17:55:24,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:55:24,965 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 280 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2347 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 [2022-03-03 17:55:24,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2347 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-03 17:55:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1039. [2022-03-03 17:55:24,974 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) [2022-03-03 17:55:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2589 transitions. [2022-03-03 17:55:24,975 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2589 transitions. Word has length 79 [2022-03-03 17:55:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:24,975 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2589 transitions. [2022-03-03 17:55:24,975 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) [2022-03-03 17:55:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2589 transitions. [2022-03-03 17:55:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:24,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:24,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:24,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-03 17:55:24,976 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -594705146, now seen corresponding path program 119 times [2022-03-03 17:55:24,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:24,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297161317] [2022-03-03 17:55:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:25,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:25,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297161317] [2022-03-03 17:55:25,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297161317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:25,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:25,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:25,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857251218] [2022-03-03 17:55:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:25,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:25,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:25,305 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) [2022-03-03 17:55:27,511 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 [] [2022-03-03 17:55:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:27,923 INFO L93 Difference]: Finished difference Result 1325 states and 3305 transitions. [2022-03-03 17:55:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:55:27,924 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 [2022-03-03 17:55:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:27,925 INFO L225 Difference]: With dead ends: 1325 [2022-03-03 17:55:27,925 INFO L226 Difference]: Without dead ends: 1195 [2022-03-03 17:55:27,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:55:27,926 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 340 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:27,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2447 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 17:55:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-03 17:55:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-03-03 17:55:27,935 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) [2022-03-03 17:55:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-03 17:55:27,936 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-03 17:55:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:27,936 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-03 17:55:27,936 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) [2022-03-03 17:55:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-03 17:55:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:27,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:27,937 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] [2022-03-03 17:55:27,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-03 17:55:27,937 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1448096312, now seen corresponding path program 120 times [2022-03-03 17:55:27,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:27,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094474784] [2022-03-03 17:55:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:28,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:28,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094474784] [2022-03-03 17:55:28,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094474784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:28,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:28,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:28,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110486959] [2022-03-03 17:55:28,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:28,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:28,276 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) [2022-03-03 17:55:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:29,767 INFO L93 Difference]: Finished difference Result 1324 states and 3296 transitions. [2022-03-03 17:55:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:55:29,768 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 [2022-03-03 17:55:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:29,770 INFO L225 Difference]: With dead ends: 1324 [2022-03-03 17:55:29,770 INFO L226 Difference]: Without dead ends: 1226 [2022-03-03 17:55:29,770 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 [2022-03-03 17:55:29,770 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 271 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:29,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2912 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:55:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-03-03 17:55:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1103. [2022-03-03 17:55:29,779 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) [2022-03-03 17:55:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2753 transitions. [2022-03-03 17:55:29,781 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2753 transitions. Word has length 79 [2022-03-03 17:55:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:29,781 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2753 transitions. [2022-03-03 17:55:29,781 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) [2022-03-03 17:55:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2753 transitions. [2022-03-03 17:55:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:29,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:29,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:29,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-03 17:55:29,782 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash -733859034, now seen corresponding path program 121 times [2022-03-03 17:55:29,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:29,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815276549] [2022-03-03 17:55:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:30,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:30,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815276549] [2022-03-03 17:55:30,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815276549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:30,143 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:30,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:30,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636440147] [2022-03-03 17:55:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:30,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:30,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:30,144 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) [2022-03-03 17:55:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:31,334 INFO L93 Difference]: Finished difference Result 1307 states and 3247 transitions. [2022-03-03 17:55:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:55:31,335 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 [2022-03-03 17:55:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:31,336 INFO L225 Difference]: With dead ends: 1307 [2022-03-03 17:55:31,336 INFO L226 Difference]: Without dead ends: 1194 [2022-03-03 17:55:31,337 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 [2022-03-03 17:55:31,337 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 300 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2829 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-03 17:55:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-03-03 17:55:31,345 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) [2022-03-03 17:55:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-03 17:55:31,346 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-03 17:55:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:31,347 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-03 17:55:31,347 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) [2022-03-03 17:55:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-03 17:55:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:31,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:31,348 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] [2022-03-03 17:55:31,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-03 17:55:31,348 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash -408410808, now seen corresponding path program 122 times [2022-03-03 17:55:31,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:31,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855856331] [2022-03-03 17:55:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:31,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:31,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855856331] [2022-03-03 17:55:31,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855856331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:31,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:31,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:31,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477292830] [2022-03-03 17:55:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:31,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:31,684 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) [2022-03-03 17:55:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:33,084 INFO L93 Difference]: Finished difference Result 1301 states and 3227 transitions. [2022-03-03 17:55:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:33,085 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 [2022-03-03 17:55:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:33,086 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:55:33,086 INFO L226 Difference]: Without dead ends: 1151 [2022-03-03 17:55:33,087 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 [2022-03-03 17:55:33,087 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 290 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:33,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2583 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:55:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-03 17:55:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1087. [2022-03-03 17:55:33,095 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) [2022-03-03 17:55:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-03 17:55:33,097 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-03 17:55:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:33,097 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-03 17:55:33,097 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) [2022-03-03 17:55:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-03 17:55:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:33,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:33,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:33,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-03 17:55:33,098 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash 453171526, now seen corresponding path program 123 times [2022-03-03 17:55:33,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:33,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118772405] [2022-03-03 17:55:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:33,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:33,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118772405] [2022-03-03 17:55:33,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118772405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:33,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:33,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:33,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763276854] [2022-03-03 17:55:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:33,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:33,511 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) [2022-03-03 17:55:35,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:55:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:35,753 INFO L93 Difference]: Finished difference Result 1306 states and 3234 transitions. [2022-03-03 17:55:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:35,753 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 [2022-03-03 17:55:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:35,755 INFO L225 Difference]: With dead ends: 1306 [2022-03-03 17:55:35,755 INFO L226 Difference]: Without dead ends: 1208 [2022-03-03 17:55:35,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:55:35,756 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 253 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:35,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2582 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 17:55:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-03-03 17:55:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1111. [2022-03-03 17:55:35,764 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) [2022-03-03 17:55:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-03 17:55:35,766 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-03 17:55:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:35,766 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-03 17:55:35,766 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) [2022-03-03 17:55:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-03 17:55:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:35,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:35,767 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] [2022-03-03 17:55:35,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-03 17:55:35,767 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1769704418, now seen corresponding path program 124 times [2022-03-03 17:55:35,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:35,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203961862] [2022-03-03 17:55:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:35,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:36,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:36,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203961862] [2022-03-03 17:55:36,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203961862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:36,076 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:36,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:36,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088448938] [2022-03-03 17:55:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:36,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:36,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:36,077 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) [2022-03-03 17:55:38,767 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 [] [2022-03-03 17:55:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:39,500 INFO L93 Difference]: Finished difference Result 1314 states and 3240 transitions. [2022-03-03 17:55:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:39,500 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 [2022-03-03 17:55:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:39,502 INFO L225 Difference]: With dead ends: 1314 [2022-03-03 17:55:39,502 INFO L226 Difference]: Without dead ends: 1155 [2022-03-03 17:55:39,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:55:39,503 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 282 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:39,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2547 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 974 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 17:55:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-03 17:55:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1103. [2022-03-03 17:55:39,511 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) [2022-03-03 17:55:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-03 17:55:39,512 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-03 17:55:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:39,512 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-03 17:55:39,512 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) [2022-03-03 17:55:39,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-03 17:55:39,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:39,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:39,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:39,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-03 17:55:39,514 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 544731840, now seen corresponding path program 125 times [2022-03-03 17:55:39,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:39,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430787791] [2022-03-03 17:55:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:39,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:39,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430787791] [2022-03-03 17:55:39,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430787791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:39,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:39,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:39,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907905828] [2022-03-03 17:55:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:39,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:39,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:39,824 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 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) [2022-03-03 17:55:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:40,895 INFO L93 Difference]: Finished difference Result 1376 states and 3410 transitions. [2022-03-03 17:55:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:55:40,896 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 [2022-03-03 17:55:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:40,897 INFO L225 Difference]: With dead ends: 1376 [2022-03-03 17:55:40,897 INFO L226 Difference]: Without dead ends: 1197 [2022-03-03 17:55:40,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=2029, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:55:40,898 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 304 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:40,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2466 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-03-03 17:55:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1095. [2022-03-03 17:55:40,907 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) [2022-03-03 17:55:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-03 17:55:40,908 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-03 17:55:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:40,908 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-03 17:55:40,908 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) [2022-03-03 17:55:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-03 17:55:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:40,909 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:40,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:40,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-03-03 17:55:40,909 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -253094584, now seen corresponding path program 126 times [2022-03-03 17:55:40,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:40,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473250938] [2022-03-03 17:55:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:41,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:41,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473250938] [2022-03-03 17:55:41,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473250938] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:41,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:41,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:41,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408540663] [2022-03-03 17:55:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:41,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:41,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:41,226 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) [2022-03-03 17:55:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:42,134 INFO L93 Difference]: Finished difference Result 1281 states and 3168 transitions. [2022-03-03 17:55:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:55:42,134 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 [2022-03-03 17:55:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:42,135 INFO L225 Difference]: With dead ends: 1281 [2022-03-03 17:55:42,135 INFO L226 Difference]: Without dead ends: 1167 [2022-03-03 17:55:42,135 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 [2022-03-03 17:55:42,136 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 284 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:42,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2162 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-03 17:55:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1099. [2022-03-03 17:55:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4863387978142075) internal successors, (2730), 1098 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) [2022-03-03 17:55:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2730 transitions. [2022-03-03 17:55:42,145 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2730 transitions. Word has length 79 [2022-03-03 17:55:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:42,145 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2730 transitions. [2022-03-03 17:55:42,146 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) [2022-03-03 17:55:42,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2730 transitions. [2022-03-03 17:55:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:42,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:42,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:42,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-03 17:55:42,147 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash -619989014, now seen corresponding path program 127 times [2022-03-03 17:55:42,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:42,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450320492] [2022-03-03 17:55:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:42,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:42,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450320492] [2022-03-03 17:55:42,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450320492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:42,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:42,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:42,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417380941] [2022-03-03 17:55:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:42,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:42,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:42,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:42,454 INFO L87 Difference]: Start difference. First operand 1099 states and 2730 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) [2022-03-03 17:55:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:43,392 INFO L93 Difference]: Finished difference Result 1292 states and 3192 transitions. [2022-03-03 17:55:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:55:43,392 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 [2022-03-03 17:55:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:43,394 INFO L225 Difference]: With dead ends: 1292 [2022-03-03 17:55:43,394 INFO L226 Difference]: Without dead ends: 1194 [2022-03-03 17:55:43,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:55:43,394 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 271 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2241 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-03 17:55:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1103. [2022-03-03 17:55:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.483666061705989) internal successors, (2737), 1102 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) [2022-03-03 17:55:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2737 transitions. [2022-03-03 17:55:43,411 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2737 transitions. Word has length 79 [2022-03-03 17:55:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:43,412 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2737 transitions. [2022-03-03 17:55:43,412 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) [2022-03-03 17:55:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2737 transitions. [2022-03-03 17:55:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:43,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:43,413 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] [2022-03-03 17:55:43,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-03 17:55:43,413 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash 94248264, now seen corresponding path program 128 times [2022-03-03 17:55:43,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:43,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128990992] [2022-03-03 17:55:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:43,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:43,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128990992] [2022-03-03 17:55:43,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128990992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:43,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:43,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:43,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135493969] [2022-03-03 17:55:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:43,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:43,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:43,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:43,731 INFO L87 Difference]: Start difference. First operand 1103 states and 2737 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) [2022-03-03 17:55:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:44,649 INFO L93 Difference]: Finished difference Result 1260 states and 3108 transitions. [2022-03-03 17:55:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:44,649 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 [2022-03-03 17:55:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:44,651 INFO L225 Difference]: With dead ends: 1260 [2022-03-03 17:55:44,651 INFO L226 Difference]: Without dead ends: 1151 [2022-03-03 17:55:44,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:55:44,652 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 303 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:44,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2176 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-03 17:55:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1095. [2022-03-03 17:55:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4853747714808043) internal successors, (2719), 1094 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2719 transitions. [2022-03-03 17:55:44,663 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2719 transitions. Word has length 79 [2022-03-03 17:55:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:44,663 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2719 transitions. [2022-03-03 17:55:44,663 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) [2022-03-03 17:55:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2719 transitions. [2022-03-03 17:55:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:44,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:44,664 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] [2022-03-03 17:55:44,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-03 17:55:44,665 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 564939078, now seen corresponding path program 129 times [2022-03-03 17:55:44,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:44,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689459723] [2022-03-03 17:55:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:44,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:44,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:44,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689459723] [2022-03-03 17:55:44,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689459723] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:44,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:44,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:44,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294715087] [2022-03-03 17:55:44,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:44,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:44,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:44,993 INFO L87 Difference]: Start difference. First operand 1095 states and 2719 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) [2022-03-03 17:55:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:45,918 INFO L93 Difference]: Finished difference Result 1245 states and 3073 transitions. [2022-03-03 17:55:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:45,919 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 [2022-03-03 17:55:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:45,920 INFO L225 Difference]: With dead ends: 1245 [2022-03-03 17:55:45,920 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:55:45,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:55:45,921 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 235 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:45,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 2448 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:55:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-03 17:55:45,929 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) [2022-03-03 17:55:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:55:45,931 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:55:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:45,931 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:55:45,931 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) [2022-03-03 17:55:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:55:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:45,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:45,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:45,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-03 17:55:45,932 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1398822948, now seen corresponding path program 130 times [2022-03-03 17:55:45,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:45,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065952775] [2022-03-03 17:55:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:46,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:46,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065952775] [2022-03-03 17:55:46,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065952775] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:46,271 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:46,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:46,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988237194] [2022-03-03 17:55:46,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:46,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:46,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:46,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:46,272 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) [2022-03-03 17:55:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:47,518 INFO L93 Difference]: Finished difference Result 1345 states and 3331 transitions. [2022-03-03 17:55:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:55:47,518 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 [2022-03-03 17:55:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:47,520 INFO L225 Difference]: With dead ends: 1345 [2022-03-03 17:55:47,520 INFO L226 Difference]: Without dead ends: 1247 [2022-03-03 17:55:47,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:55:47,520 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 286 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:47,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2942 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:55:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-03 17:55:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1103. [2022-03-03 17:55:47,529 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) [2022-03-03 17:55:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-03 17:55:47,530 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-03 17:55:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-03 17:55:47,531 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) [2022-03-03 17:55:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-03 17:55:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:47,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:47,532 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] [2022-03-03 17:55:47,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-03-03 17:55:47,532 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1579611456, now seen corresponding path program 131 times [2022-03-03 17:55:47,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:47,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2820275] [2022-03-03 17:55:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:47,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:47,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2820275] [2022-03-03 17:55:47,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2820275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:47,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:47,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:55:47,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267069924] [2022-03-03 17:55:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:47,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:55:47,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:47,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:55:47,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:55:47,859 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) [2022-03-03 17:55:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:48,990 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-03-03 17:55:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:55:48,990 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 [2022-03-03 17:55:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:48,992 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:55:48,992 INFO L226 Difference]: Without dead ends: 1166 [2022-03-03 17:55:48,992 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 [2022-03-03 17:55:48,992 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 334 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:48,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2550 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-03 17:55:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1079. [2022-03-03 17:55:49,001 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) [2022-03-03 17:55:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-03 17:55:49,002 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-03 17:55:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:49,002 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-03 17:55:49,002 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) [2022-03-03 17:55:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-03 17:55:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:49,003 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:49,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:49,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-03 17:55:49,003 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1584840810, now seen corresponding path program 132 times [2022-03-03 17:55:49,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:49,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554414084] [2022-03-03 17:55:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:49,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:49,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554414084] [2022-03-03 17:55:49,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554414084] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:49,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:49,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:49,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386856280] [2022-03-03 17:55:49,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:49,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:49,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:49,321 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) [2022-03-03 17:55:50,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:50,266 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-03 17:55:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:55:50,267 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 [2022-03-03 17:55:50,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:50,268 INFO L225 Difference]: With dead ends: 1289 [2022-03-03 17:55:50,268 INFO L226 Difference]: Without dead ends: 1115 [2022-03-03 17:55:50,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:55:50,269 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 300 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:50,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2335 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-03 17:55:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-03 17:55:50,278 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) [2022-03-03 17:55:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-03 17:55:50,279 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-03 17:55:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:50,279 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-03 17:55:50,279 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) [2022-03-03 17:55:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-03 17:55:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:50,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:50,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-03 17:55:50,280 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2026530828, now seen corresponding path program 133 times [2022-03-03 17:55:50,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:50,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839254479] [2022-03-03 17:55:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:50,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:50,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839254479] [2022-03-03 17:55:50,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839254479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:50,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:50,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:50,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048500533] [2022-03-03 17:55:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:50,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:50,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:50,647 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) [2022-03-03 17:55:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:51,909 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-03-03 17:55:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:51,909 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 [2022-03-03 17:55:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:51,911 INFO L225 Difference]: With dead ends: 1327 [2022-03-03 17:55:51,911 INFO L226 Difference]: Without dead ends: 1229 [2022-03-03 17:55:51,911 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 [2022-03-03 17:55:51,912 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 261 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:51,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2777 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:55:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-03 17:55:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1111. [2022-03-03 17:55:51,921 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) [2022-03-03 17:55:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-03 17:55:51,922 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-03 17:55:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:51,922 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-03 17:55:51,922 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) [2022-03-03 17:55:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-03 17:55:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:51,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:51,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:51,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-03 17:55:51,923 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -951903576, now seen corresponding path program 134 times [2022-03-03 17:55:51,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:51,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753723389] [2022-03-03 17:55:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:51,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:52,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:52,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753723389] [2022-03-03 17:55:52,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753723389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:52,227 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:52,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:55:52,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327440934] [2022-03-03 17:55:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:52,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:55:52,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:52,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:55:52,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:55:52,228 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) [2022-03-03 17:55:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:53,268 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-03 17:55:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:55:53,268 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 [2022-03-03 17:55:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:53,270 INFO L225 Difference]: With dead ends: 1295 [2022-03-03 17:55:53,270 INFO L226 Difference]: Without dead ends: 1160 [2022-03-03 17:55:53,270 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 [2022-03-03 17:55:53,270 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 280 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:53,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2490 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-03 17:55:53,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1087. [2022-03-03 17:55:53,279 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) [2022-03-03 17:55:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:55:53,280 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:55:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:53,280 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:55:53,280 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) [2022-03-03 17:55:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:55:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:53,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:53,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:53,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-03 17:55:53,281 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1975058156, now seen corresponding path program 135 times [2022-03-03 17:55:53,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:53,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275061728] [2022-03-03 17:55:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:53,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:53,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275061728] [2022-03-03 17:55:53,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275061728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:53,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:53,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-03 17:55:53,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449179254] [2022-03-03 17:55:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:53,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:55:53,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:55:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:55:53,571 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) [2022-03-03 17:55:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:54,420 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-03 17:55:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:55:54,421 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 [2022-03-03 17:55:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:54,422 INFO L225 Difference]: With dead ends: 1271 [2022-03-03 17:55:54,422 INFO L226 Difference]: Without dead ends: 1051 [2022-03-03 17:55:54,422 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 [2022-03-03 17:55:54,422 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 248 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:54,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2388 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-03-03 17:55:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1023. [2022-03-03 17:55:54,430 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) [2022-03-03 17:55:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2545 transitions. [2022-03-03 17:55:54,431 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2545 transitions. Word has length 79 [2022-03-03 17:55:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:54,431 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2545 transitions. [2022-03-03 17:55:54,431 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) [2022-03-03 17:55:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2545 transitions. [2022-03-03 17:55:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:54,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:54,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:54,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-03-03 17:55:54,432 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1998707450, now seen corresponding path program 136 times [2022-03-03 17:55:54,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:54,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604909931] [2022-03-03 17:55:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:54,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:54,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:54,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604909931] [2022-03-03 17:55:54,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604909931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:54,781 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:54,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:55:54,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006581575] [2022-03-03 17:55:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:54,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:55:54,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:55:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:55:54,782 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) [2022-03-03 17:55:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:56,245 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-03-03 17:55:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:55:56,245 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 [2022-03-03 17:55:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:56,246 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 17:55:56,247 INFO L226 Difference]: Without dead ends: 1223 [2022-03-03 17:55:56,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:55:56,247 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 369 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:56,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2910 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:55:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-03 17:55:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-03-03 17:55:56,255 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) [2022-03-03 17:55:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-03 17:55:56,257 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-03 17:55:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:56,257 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-03 17:55:56,257 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) [2022-03-03 17:55:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-03 17:55:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:56,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:56,258 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] [2022-03-03 17:55:56,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-03 17:55:56,258 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1442868680, now seen corresponding path program 137 times [2022-03-03 17:55:56,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:56,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790489894] [2022-03-03 17:55:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:56,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:56,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790489894] [2022-03-03 17:55:56,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790489894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:56,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:56,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:55:56,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633553286] [2022-03-03 17:55:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:56,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:55:56,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:55:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:55:56,621 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) [2022-03-03 17:55:58,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:55:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:59,125 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-03-03 17:55:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:55:59,125 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 [2022-03-03 17:55:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:59,127 INFO L225 Difference]: With dead ends: 1352 [2022-03-03 17:55:59,127 INFO L226 Difference]: Without dead ends: 1254 [2022-03-03 17:55:59,127 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 [2022-03-03 17:55:59,127 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 342 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:59,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2888 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 17:55:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-03 17:55:59,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-03-03 17:55:59,136 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) [2022-03-03 17:55:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-03 17:55:59,137 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-03 17:55:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:59,138 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-03 17:55:59,138 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) [2022-03-03 17:55:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-03 17:55:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:55:59,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:59,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:59,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-03 17:55:59,139 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2137861338, now seen corresponding path program 138 times [2022-03-03 17:55:59,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:59,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111030795] [2022-03-03 17:55:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:59,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:59,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111030795] [2022-03-03 17:55:59,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111030795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:59,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:55:59,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:55:59,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709171150] [2022-03-03 17:55:59,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:59,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:55:59,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:55:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:55:59,470 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) [2022-03-03 17:56:02,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:56:04,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:56:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:05,030 INFO L93 Difference]: Finished difference Result 1375 states and 3422 transitions. [2022-03-03 17:56:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:56:05,030 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 [2022-03-03 17:56:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:05,032 INFO L225 Difference]: With dead ends: 1375 [2022-03-03 17:56:05,032 INFO L226 Difference]: Without dead ends: 1262 [2022-03-03 17:56:05,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=3248, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 17:56:05,032 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 338 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:05,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2944 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1188 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-03-03 17:56:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-03 17:56:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1107. [2022-03-03 17:56:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.488245931283906) internal successors, (2752), 1106 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2752 transitions. [2022-03-03 17:56:05,042 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2752 transitions. Word has length 79 [2022-03-03 17:56:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:05,042 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2752 transitions. [2022-03-03 17:56:05,042 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) [2022-03-03 17:56:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2752 transitions. [2022-03-03 17:56:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:05,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:05,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:05,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-03 17:56:05,044 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413112, now seen corresponding path program 139 times [2022-03-03 17:56:05,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:05,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499018561] [2022-03-03 17:56:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:05,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:05,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499018561] [2022-03-03 17:56:05,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499018561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:05,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:05,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:05,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800972973] [2022-03-03 17:56:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:05,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:05,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:05,378 INFO L87 Difference]: Start difference. First operand 1107 states and 2752 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) [2022-03-03 17:56:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:07,046 INFO L93 Difference]: Finished difference Result 1369 states and 3398 transitions. [2022-03-03 17:56:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:56:07,047 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 [2022-03-03 17:56:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:07,048 INFO L225 Difference]: With dead ends: 1369 [2022-03-03 17:56:07,048 INFO L226 Difference]: Without dead ends: 1219 [2022-03-03 17:56:07,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=2827, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:56:07,049 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 354 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:07,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2850 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:56:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-03 17:56:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1103. [2022-03-03 17:56:07,057 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) [2022-03-03 17:56:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-03-03 17:56:07,059 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-03-03 17:56:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:07,059 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-03-03 17:56:07,059 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) [2022-03-03 17:56:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-03-03 17:56:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:07,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:07,060 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] [2022-03-03 17:56:07,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-03-03 17:56:07,060 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -950830778, now seen corresponding path program 140 times [2022-03-03 17:56:07,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:07,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817943765] [2022-03-03 17:56:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:07,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:07,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817943765] [2022-03-03 17:56:07,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817943765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:07,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:07,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:07,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982975940] [2022-03-03 17:56:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:07,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:07,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:07,377 INFO L87 Difference]: Start difference. First operand 1103 states and 2741 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) [2022-03-03 17:56:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:08,975 INFO L93 Difference]: Finished difference Result 1362 states and 3376 transitions. [2022-03-03 17:56:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:56:08,975 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 [2022-03-03 17:56:08,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:08,977 INFO L225 Difference]: With dead ends: 1362 [2022-03-03 17:56:08,977 INFO L226 Difference]: Without dead ends: 1264 [2022-03-03 17:56:08,977 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 [2022-03-03 17:56:08,978 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 324 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:08,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2686 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:56:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-03-03 17:56:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1127. [2022-03-03 17:56:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4857904085257547) internal successors, (2799), 1126 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2799 transitions. [2022-03-03 17:56:08,988 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2799 transitions. Word has length 79 [2022-03-03 17:56:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:08,988 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2799 transitions. [2022-03-03 17:56:08,988 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) [2022-03-03 17:56:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2799 transitions. [2022-03-03 17:56:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:08,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:08,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:08,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-03 17:56:08,990 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 365702114, now seen corresponding path program 141 times [2022-03-03 17:56:08,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:08,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132065335] [2022-03-03 17:56:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:09,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:09,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132065335] [2022-03-03 17:56:09,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132065335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:09,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:09,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:09,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502466123] [2022-03-03 17:56:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:09,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:09,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:09,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:09,328 INFO L87 Difference]: Start difference. First operand 1127 states and 2799 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) [2022-03-03 17:56:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:10,533 INFO L93 Difference]: Finished difference Result 1345 states and 3323 transitions. [2022-03-03 17:56:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:56:10,533 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 [2022-03-03 17:56:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:10,535 INFO L225 Difference]: With dead ends: 1345 [2022-03-03 17:56:10,535 INFO L226 Difference]: Without dead ends: 1186 [2022-03-03 17:56:10,535 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 [2022-03-03 17:56:10,535 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 323 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:10,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2523 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-03 17:56:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1079. [2022-03-03 17:56:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.481447124304267) internal successors, (2675), 1078 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-03-03 17:56:10,545 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 79 [2022-03-03 17:56:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:10,545 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-03-03 17:56:10,545 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) [2022-03-03 17:56:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-03-03 17:56:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:10,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:10,546 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] [2022-03-03 17:56:10,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-03 17:56:10,546 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1560205348, now seen corresponding path program 142 times [2022-03-03 17:56:10,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:10,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700686423] [2022-03-03 17:56:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:10,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:10,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:10,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700686423] [2022-03-03 17:56:10,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700686423] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:10,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:10,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:10,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225116754] [2022-03-03 17:56:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:10,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:10,868 INFO L87 Difference]: Start difference. First operand 1079 states and 2675 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) [2022-03-03 17:56:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:12,032 INFO L93 Difference]: Finished difference Result 1319 states and 3268 transitions. [2022-03-03 17:56:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:56:12,032 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 [2022-03-03 17:56:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:12,034 INFO L225 Difference]: With dead ends: 1319 [2022-03-03 17:56:12,034 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 17:56:12,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:56:12,034 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 361 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:12,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2413 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 17:56:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-03-03 17:56:12,042 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) [2022-03-03 17:56:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-03 17:56:12,044 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-03 17:56:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-03 17:56:12,044 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) [2022-03-03 17:56:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-03 17:56:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:12,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:12,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:12,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-03 17:56:12,045 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1657096888, now seen corresponding path program 143 times [2022-03-03 17:56:12,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:12,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684236971] [2022-03-03 17:56:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:12,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:12,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:12,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684236971] [2022-03-03 17:56:12,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684236971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:12,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:12,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:12,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830735455] [2022-03-03 17:56:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:12,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:12,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:12,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:12,379 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) [2022-03-03 17:56:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:13,478 INFO L93 Difference]: Finished difference Result 1289 states and 3198 transitions. [2022-03-03 17:56:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:56:13,478 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 [2022-03-03 17:56:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:13,480 INFO L225 Difference]: With dead ends: 1289 [2022-03-03 17:56:13,480 INFO L226 Difference]: Without dead ends: 1175 [2022-03-03 17:56:13,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2138, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:56:13,480 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 286 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:13,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2618 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-03-03 17:56:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1079. [2022-03-03 17:56:13,488 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) [2022-03-03 17:56:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-03 17:56:13,490 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-03 17:56:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:13,490 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-03 17:56:13,490 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) [2022-03-03 17:56:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-03 17:56:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:13,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:13,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:13,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-03 17:56:13,491 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:13,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2023991318, now seen corresponding path program 144 times [2022-03-03 17:56:13,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:13,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547736441] [2022-03-03 17:56:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:13,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:13,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547736441] [2022-03-03 17:56:13,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547736441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:13,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:13,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:13,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819132876] [2022-03-03 17:56:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:13,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:13,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:13,826 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) [2022-03-03 17:56:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:14,891 INFO L93 Difference]: Finished difference Result 1261 states and 3125 transitions. [2022-03-03 17:56:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:56:14,891 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 [2022-03-03 17:56:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:14,892 INFO L225 Difference]: With dead ends: 1261 [2022-03-03 17:56:14,892 INFO L226 Difference]: Without dead ends: 1155 [2022-03-03 17:56:14,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:56:14,893 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 304 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:14,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2458 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-03 17:56:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1071. [2022-03-03 17:56:14,901 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) [2022-03-03 17:56:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-03 17:56:14,902 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-03 17:56:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-03 17:56:14,902 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) [2022-03-03 17:56:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-03 17:56:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:14,903 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:14,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:14,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-03 17:56:14,904 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -839063226, now seen corresponding path program 145 times [2022-03-03 17:56:14,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:14,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554038882] [2022-03-03 17:56:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:15,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:15,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554038882] [2022-03-03 17:56:15,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554038882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:15,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:15,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:15,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908364144] [2022-03-03 17:56:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:15,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:15,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:15,240 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) [2022-03-03 17:56:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:16,556 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-03-03 17:56:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:56:16,556 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 [2022-03-03 17:56:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:16,558 INFO L225 Difference]: With dead ends: 1318 [2022-03-03 17:56:16,558 INFO L226 Difference]: Without dead ends: 1220 [2022-03-03 17:56:16,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:56:16,559 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 300 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:16,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2513 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:56:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-03 17:56:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1095. [2022-03-03 17:56:16,575 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) [2022-03-03 17:56:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-03 17:56:16,576 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-03 17:56:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:16,576 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-03 17:56:16,576 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) [2022-03-03 17:56:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-03 17:56:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:16,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:16,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:16,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-03-03 17:56:16,577 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 477469666, now seen corresponding path program 146 times [2022-03-03 17:56:16,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:16,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963889633] [2022-03-03 17:56:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:16,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:16,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963889633] [2022-03-03 17:56:16,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963889633] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:16,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:16,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:16,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011836109] [2022-03-03 17:56:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:16,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:16,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:16,904 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) [2022-03-03 17:56:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:18,054 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-03 17:56:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:56:18,055 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 [2022-03-03 17:56:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:18,056 INFO L225 Difference]: With dead ends: 1286 [2022-03-03 17:56:18,056 INFO L226 Difference]: Without dead ends: 1143 [2022-03-03 17:56:18,056 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 [2022-03-03 17:56:18,057 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 320 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:18,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2739 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-03 17:56:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-03-03 17:56:18,073 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) [2022-03-03 17:56:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-03 17:56:18,074 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-03 17:56:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-03 17:56:18,074 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) [2022-03-03 17:56:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-03 17:56:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:18,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:18,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:18,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-03 17:56:18,076 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -5179356, now seen corresponding path program 147 times [2022-03-03 17:56:18,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:18,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504021684] [2022-03-03 17:56:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:18,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:18,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504021684] [2022-03-03 17:56:18,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504021684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:18,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:18,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:18,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663838675] [2022-03-03 17:56:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:18,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:18,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:18,411 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) [2022-03-03 17:56:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:19,885 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-03 17:56:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:56:19,886 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 [2022-03-03 17:56:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:19,887 INFO L225 Difference]: With dead ends: 1361 [2022-03-03 17:56:19,887 INFO L226 Difference]: Without dead ends: 1263 [2022-03-03 17:56:19,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:56:19,887 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 333 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:19,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2924 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:56:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-03 17:56:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-03 17:56:19,896 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) [2022-03-03 17:56:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-03 17:56:19,897 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-03 17:56:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:19,897 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-03 17:56:19,897 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) [2022-03-03 17:56:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-03 17:56:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:19,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:19,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:19,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-03 17:56:19,899 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1311353536, now seen corresponding path program 148 times [2022-03-03 17:56:19,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:19,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749289580] [2022-03-03 17:56:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:19,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:20,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:20,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749289580] [2022-03-03 17:56:20,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749289580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:20,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:20,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:20,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767178154] [2022-03-03 17:56:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:20,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:20,260 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) [2022-03-03 17:56:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:21,633 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-03 17:56:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:56:21,634 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 [2022-03-03 17:56:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:21,635 INFO L225 Difference]: With dead ends: 1317 [2022-03-03 17:56:21,635 INFO L226 Difference]: Without dead ends: 1182 [2022-03-03 17:56:21,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:56:21,636 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 356 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:21,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2911 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:56:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-03 17:56:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-03 17:56:21,644 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) [2022-03-03 17:56:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-03 17:56:21,645 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-03 17:56:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:21,645 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-03 17:56:21,645 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) [2022-03-03 17:56:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-03 17:56:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:21,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:21,646 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] [2022-03-03 17:56:21,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-03-03 17:56:21,646 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash 180838506, now seen corresponding path program 149 times [2022-03-03 17:56:21,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:21,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099673131] [2022-03-03 17:56:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:21,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:21,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099673131] [2022-03-03 17:56:21,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099673131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:21,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:21,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:21,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191785] [2022-03-03 17:56:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:21,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:21,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:21,969 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) [2022-03-03 17:56:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:23,139 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-03 17:56:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:56:23,139 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 [2022-03-03 17:56:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:23,140 INFO L225 Difference]: With dead ends: 1305 [2022-03-03 17:56:23,140 INFO L226 Difference]: Without dead ends: 1131 [2022-03-03 17:56:23,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:56:23,141 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 306 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:23,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2951 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-03 17:56:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-03 17:56:23,149 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) [2022-03-03 17:56:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-03 17:56:23,150 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-03 17:56:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:23,150 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-03 17:56:23,150 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) [2022-03-03 17:56:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-03 17:56:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:23,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:23,151 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] [2022-03-03 17:56:23,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-03 17:56:23,151 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash 622528524, now seen corresponding path program 150 times [2022-03-03 17:56:23,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:23,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183551676] [2022-03-03 17:56:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:23,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:23,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183551676] [2022-03-03 17:56:23,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183551676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:23,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:23,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:23,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495018063] [2022-03-03 17:56:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:23,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:23,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:23,475 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) [2022-03-03 17:56:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:25,119 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-03 17:56:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:56:25,119 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 [2022-03-03 17:56:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:25,121 INFO L225 Difference]: With dead ends: 1339 [2022-03-03 17:56:25,121 INFO L226 Difference]: Without dead ends: 1241 [2022-03-03 17:56:25,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:56:25,121 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 317 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:25,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2590 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:56:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-03 17:56:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-03-03 17:56:25,130 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) [2022-03-03 17:56:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 17:56:25,131 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 17:56:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:25,131 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 17:56:25,131 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) [2022-03-03 17:56:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 17:56:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:25,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:25,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:25,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-03 17:56:25,132 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1939061416, now seen corresponding path program 151 times [2022-03-03 17:56:25,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:25,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157780193] [2022-03-03 17:56:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:25,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:25,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:25,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157780193] [2022-03-03 17:56:25,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157780193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:25,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:25,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:25,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532166813] [2022-03-03 17:56:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:25,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:25,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:25,454 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) [2022-03-03 17:56:28,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:56:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:29,012 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-03 17:56:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:56:29,013 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 [2022-03-03 17:56:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:29,014 INFO L225 Difference]: With dead ends: 1307 [2022-03-03 17:56:29,014 INFO L226 Difference]: Without dead ends: 1172 [2022-03-03 17:56:29,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:56:29,014 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 326 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:29,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2566 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1016 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 17:56:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-03 17:56:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-03-03 17:56:29,023 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) [2022-03-03 17:56:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 17:56:29,024 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 17:56:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:29,024 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 17:56:29,024 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) [2022-03-03 17:56:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 17:56:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:29,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:29,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:29,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-03 17:56:29,025 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:29,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash 571055852, now seen corresponding path program 152 times [2022-03-03 17:56:29,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:29,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005122208] [2022-03-03 17:56:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:29,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:29,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:29,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005122208] [2022-03-03 17:56:29,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005122208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:29,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:29,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:29,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287488510] [2022-03-03 17:56:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:29,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:29,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:29,336 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) [2022-03-03 17:56:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:30,336 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-03 17:56:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:56:30,336 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 [2022-03-03 17:56:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:30,338 INFO L225 Difference]: With dead ends: 1283 [2022-03-03 17:56:30,338 INFO L226 Difference]: Without dead ends: 1079 [2022-03-03 17:56:30,338 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 [2022-03-03 17:56:30,338 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 299 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:30,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2474 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-03 17:56:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-03-03 17:56:30,347 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) [2022-03-03 17:56:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2552 transitions. [2022-03-03 17:56:30,348 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2552 transitions. Word has length 79 [2022-03-03 17:56:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2552 transitions. [2022-03-03 17:56:30,348 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) [2022-03-03 17:56:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2552 transitions. [2022-03-03 17:56:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:30,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:30,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:30,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-03 17:56:30,353 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1880465684, now seen corresponding path program 153 times [2022-03-03 17:56:30,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:30,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124989391] [2022-03-03 17:56:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:30,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:30,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124989391] [2022-03-03 17:56:30,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124989391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:30,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:30,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:30,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841528021] [2022-03-03 17:56:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:30,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:30,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:30,665 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) [2022-03-03 17:56:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:31,594 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-03 17:56:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:56:31,595 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 [2022-03-03 17:56:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:31,596 INFO L225 Difference]: With dead ends: 1285 [2022-03-03 17:56:31,596 INFO L226 Difference]: Without dead ends: 1155 [2022-03-03 17:56:31,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:56:31,597 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 281 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:31,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2188 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-03 17:56:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-03 17:56:31,605 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) [2022-03-03 17:56:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-03 17:56:31,606 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-03 17:56:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:31,606 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-03 17:56:31,606 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) [2022-03-03 17:56:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-03 17:56:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:31,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:31,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:31,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-03 17:56:31,607 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1561110446, now seen corresponding path program 154 times [2022-03-03 17:56:31,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:31,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572347277] [2022-03-03 17:56:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:31,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:31,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572347277] [2022-03-03 17:56:31,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572347277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:31,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:31,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:31,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192099260] [2022-03-03 17:56:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:31,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:31,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:31,925 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) [2022-03-03 17:56:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:32,875 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-03-03 17:56:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:56:32,875 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 [2022-03-03 17:56:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:32,877 INFO L225 Difference]: With dead ends: 1280 [2022-03-03 17:56:32,877 INFO L226 Difference]: Without dead ends: 1182 [2022-03-03 17:56:32,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:56:32,877 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 266 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:32,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2507 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-03 17:56:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1087. [2022-03-03 17:56:32,886 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) [2022-03-03 17:56:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:56:32,887 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:56:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:32,888 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:56:32,888 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) [2022-03-03 17:56:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:56:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:32,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:32,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:32,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-03 17:56:32,889 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2019619572, now seen corresponding path program 155 times [2022-03-03 17:56:32,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:32,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923098452] [2022-03-03 17:56:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:33,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:33,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923098452] [2022-03-03 17:56:33,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923098452] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:33,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:33,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:33,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845364015] [2022-03-03 17:56:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:33,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:33,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:33,194 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) [2022-03-03 17:56:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:34,105 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-03-03 17:56:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:56:34,106 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 [2022-03-03 17:56:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:34,107 INFO L225 Difference]: With dead ends: 1248 [2022-03-03 17:56:34,107 INFO L226 Difference]: Without dead ends: 1135 [2022-03-03 17:56:34,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:56:34,108 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 279 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:34,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2190 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-03-03 17:56:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1075. [2022-03-03 17:56:34,116 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) [2022-03-03 17:56:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:56:34,117 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:56:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:34,117 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:56:34,117 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) [2022-03-03 17:56:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:56:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:34,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:34,119 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] [2022-03-03 17:56:34,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-03 17:56:34,119 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:34,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1460660980, now seen corresponding path program 156 times [2022-03-03 17:56:34,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:34,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300670597] [2022-03-03 17:56:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:34,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:34,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:34,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300670597] [2022-03-03 17:56:34,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300670597] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:34,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:34,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:34,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454224696] [2022-03-03 17:56:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:34,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:34,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:34,425 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) [2022-03-03 17:56:37,392 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 [] [2022-03-03 17:56:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:37,655 INFO L93 Difference]: Finished difference Result 1378 states and 3382 transitions. [2022-03-03 17:56:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:56:37,655 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 [2022-03-03 17:56:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:37,657 INFO L225 Difference]: With dead ends: 1378 [2022-03-03 17:56:37,657 INFO L226 Difference]: Without dead ends: 1280 [2022-03-03 17:56:37,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:56:37,657 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 321 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:37,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2575 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 17:56:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-03-03 17:56:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1087. [2022-03-03 17:56:37,666 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) [2022-03-03 17:56:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:56:37,667 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:56:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:37,667 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:56:37,668 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) [2022-03-03 17:56:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:56:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:37,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:37,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:37,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-03 17:56:37,669 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -746423702, now seen corresponding path program 157 times [2022-03-03 17:56:37,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:37,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393763085] [2022-03-03 17:56:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:38,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:38,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393763085] [2022-03-03 17:56:38,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393763085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:38,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:38,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:38,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620983332] [2022-03-03 17:56:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:38,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:38,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:38,022 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) [2022-03-03 17:56:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:39,037 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-03 17:56:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:56:39,037 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 [2022-03-03 17:56:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:39,039 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 17:56:39,039 INFO L226 Difference]: Without dead ends: 1115 [2022-03-03 17:56:39,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:56:39,039 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 273 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:39,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2396 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-03 17:56:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-03-03 17:56:39,047 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) [2022-03-03 17:56:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-03 17:56:39,048 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-03 17:56:39,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:39,049 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-03 17:56:39,049 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) [2022-03-03 17:56:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-03 17:56:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:39,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:39,050 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] [2022-03-03 17:56:39,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-03 17:56:39,050 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash 709963020, now seen corresponding path program 158 times [2022-03-03 17:56:39,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:39,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561421860] [2022-03-03 17:56:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:39,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:39,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561421860] [2022-03-03 17:56:39,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561421860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:39,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:39,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:39,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657782782] [2022-03-03 17:56:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:39,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:39,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:39,380 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) [2022-03-03 17:56:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:40,583 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-03-03 17:56:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:56:40,583 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 [2022-03-03 17:56:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:40,584 INFO L225 Difference]: With dead ends: 1333 [2022-03-03 17:56:40,584 INFO L226 Difference]: Without dead ends: 1235 [2022-03-03 17:56:40,585 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 [2022-03-03 17:56:40,585 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 279 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:40,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2814 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-03 17:56:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-03-03 17:56:40,594 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) [2022-03-03 17:56:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:56:40,595 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:56:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:56:40,596 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) [2022-03-03 17:56:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:56:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:40,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:40,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:40,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-03 17:56:40,597 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:40,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2026495912, now seen corresponding path program 159 times [2022-03-03 17:56:40,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:40,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398715970] [2022-03-03 17:56:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:40,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:40,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398715970] [2022-03-03 17:56:40,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398715970] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:40,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:40,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:40,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326014782] [2022-03-03 17:56:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:40,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:40,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:40,934 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) [2022-03-03 17:56:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:42,106 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-03 17:56:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:56:42,107 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 [2022-03-03 17:56:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:42,108 INFO L225 Difference]: With dead ends: 1289 [2022-03-03 17:56:42,108 INFO L226 Difference]: Without dead ends: 1154 [2022-03-03 17:56:42,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:56:42,108 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 281 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:42,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2661 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-03 17:56:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1063. [2022-03-03 17:56:42,116 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) [2022-03-03 17:56:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-03 17:56:42,118 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-03 17:56:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:42,118 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-03 17:56:42,118 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) [2022-03-03 17:56:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-03 17:56:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:42,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:42,119 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] [2022-03-03 17:56:42,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-03 17:56:42,119 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 895980882, now seen corresponding path program 160 times [2022-03-03 17:56:42,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:42,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865453261] [2022-03-03 17:56:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:42,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:42,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865453261] [2022-03-03 17:56:42,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865453261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:42,428 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:42,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:42,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220633066] [2022-03-03 17:56:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:42,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:42,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:42,429 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) [2022-03-03 17:56:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:43,371 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-03 17:56:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:56:43,372 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 [2022-03-03 17:56:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:43,373 INFO L225 Difference]: With dead ends: 1277 [2022-03-03 17:56:43,373 INFO L226 Difference]: Without dead ends: 1107 [2022-03-03 17:56:43,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:56:43,373 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 306 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:43,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2324 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-03 17:56:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-03 17:56:43,381 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) [2022-03-03 17:56:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-03 17:56:43,382 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-03 17:56:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:43,382 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-03 17:56:43,382 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) [2022-03-03 17:56:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-03 17:56:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:43,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:43,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:43,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-03-03 17:56:43,384 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 774666158, now seen corresponding path program 161 times [2022-03-03 17:56:43,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:43,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173135579] [2022-03-03 17:56:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:43,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:43,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173135579] [2022-03-03 17:56:43,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173135579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:43,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:43,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:43,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319316772] [2022-03-03 17:56:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:43,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:43,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:43,705 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) [2022-03-03 17:56:47,493 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 [] [2022-03-03 17:56:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:47,914 INFO L93 Difference]: Finished difference Result 1411 states and 3454 transitions. [2022-03-03 17:56:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:56:47,914 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 [2022-03-03 17:56:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:47,916 INFO L225 Difference]: With dead ends: 1411 [2022-03-03 17:56:47,916 INFO L226 Difference]: Without dead ends: 1313 [2022-03-03 17:56:47,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2520, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:56:47,916 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 314 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:47,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2756 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1053 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-03 17:56:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-03-03 17:56:47,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1075. [2022-03-03 17:56:47,925 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) [2022-03-03 17:56:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-03 17:56:47,926 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-03 17:56:47,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:47,926 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-03 17:56:47,926 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) [2022-03-03 17:56:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-03 17:56:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:47,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:47,927 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] [2022-03-03 17:56:47,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-03 17:56:47,928 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1488903436, now seen corresponding path program 162 times [2022-03-03 17:56:47,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:47,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081038944] [2022-03-03 17:56:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:48,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:48,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081038944] [2022-03-03 17:56:48,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081038944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:48,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:48,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:48,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389584629] [2022-03-03 17:56:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:48,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:48,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:48,266 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) [2022-03-03 17:56:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:49,575 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-03-03 17:56:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:56:49,576 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 [2022-03-03 17:56:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:49,577 INFO L225 Difference]: With dead ends: 1315 [2022-03-03 17:56:49,577 INFO L226 Difference]: Without dead ends: 1164 [2022-03-03 17:56:49,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:56:49,578 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 291 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:49,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2835 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:56:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-03 17:56:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1075. [2022-03-03 17:56:49,586 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) [2022-03-03 17:56:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 17:56:49,587 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 17:56:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:49,587 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 17:56:49,587 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) [2022-03-03 17:56:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 17:56:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:49,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:49,588 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] [2022-03-03 17:56:49,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-03 17:56:49,588 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 723193486, now seen corresponding path program 163 times [2022-03-03 17:56:49,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:49,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745131013] [2022-03-03 17:56:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:49,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:49,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745131013] [2022-03-03 17:56:49,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745131013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:49,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:49,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:49,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456972933] [2022-03-03 17:56:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:49,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:49,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:49,940 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) [2022-03-03 17:56:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:50,940 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-03 17:56:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:56:50,941 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 [2022-03-03 17:56:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:50,942 INFO L225 Difference]: With dead ends: 1275 [2022-03-03 17:56:50,942 INFO L226 Difference]: Without dead ends: 1079 [2022-03-03 17:56:50,942 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 [2022-03-03 17:56:50,943 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 257 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:50,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2459 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-03 17:56:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1035. [2022-03-03 17:56:50,959 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) [2022-03-03 17:56:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-03 17:56:50,961 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-03 17:56:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:50,961 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-03 17:56:50,961 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) [2022-03-03 17:56:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-03 17:56:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:50,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:50,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:50,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-03-03 17:56:50,962 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:50,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash 799262638, now seen corresponding path program 164 times [2022-03-03 17:56:50,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:50,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016439967] [2022-03-03 17:56:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:50,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:51,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:51,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016439967] [2022-03-03 17:56:51,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016439967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:51,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:51,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:51,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383672748] [2022-03-03 17:56:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:51,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:51,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:51,303 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) [2022-03-03 17:56:54,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:56:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:54,441 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-03 17:56:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:56:54,441 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 [2022-03-03 17:56:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:54,449 INFO L225 Difference]: With dead ends: 1347 [2022-03-03 17:56:54,449 INFO L226 Difference]: Without dead ends: 1249 [2022-03-03 17:56:54,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:56:54,450 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 312 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:54,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2891 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-03 17:56:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-03-03 17:56:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-03-03 17:56:54,458 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) [2022-03-03 17:56:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:56:54,460 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:56:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:54,460 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:56:54,460 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) [2022-03-03 17:56:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:56:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:54,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:54,461 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] [2022-03-03 17:56:54,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-03-03 17:56:54,461 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2115795530, now seen corresponding path program 165 times [2022-03-03 17:56:54,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:54,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668189628] [2022-03-03 17:56:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:54,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:54,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668189628] [2022-03-03 17:56:54,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668189628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:54,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:54,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:54,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524207935] [2022-03-03 17:56:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:54,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:54,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:54,862 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) [2022-03-03 17:56:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:56,180 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-03 17:56:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:56:56,180 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 [2022-03-03 17:56:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:56,181 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 17:56:56,181 INFO L226 Difference]: Without dead ends: 1168 [2022-03-03 17:56:56,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:56:56,182 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 296 mSDsluCounter, 3111 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:56,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 3138 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-03 17:56:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-03 17:56:56,190 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) [2022-03-03 17:56:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-03 17:56:56,191 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-03 17:56:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:56,191 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-03 17:56:56,191 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) [2022-03-03 17:56:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-03 17:56:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:56,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:56,192 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] [2022-03-03 17:56:56,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-03 17:56:56,193 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 747789966, now seen corresponding path program 166 times [2022-03-03 17:56:56,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:56,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623447272] [2022-03-03 17:56:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:56,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:56,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:56,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623447272] [2022-03-03 17:56:56,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623447272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:56,517 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:56,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:56:56,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092677589] [2022-03-03 17:56:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:56,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:56:56,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:56:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:56:56,518 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) [2022-03-03 17:56:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:57,616 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-03 17:56:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:56:57,617 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 [2022-03-03 17:56:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:57,618 INFO L225 Difference]: With dead ends: 1267 [2022-03-03 17:56:57,618 INFO L226 Difference]: Without dead ends: 1087 [2022-03-03 17:56:57,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:56:57,618 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 271 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:57,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2911 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-03 17:56:57,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-03 17:56:57,626 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) [2022-03-03 17:56:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-03 17:56:57,627 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-03 17:56:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:57,627 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-03 17:56:57,627 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) [2022-03-03 17:56:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-03 17:56:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:57,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:57,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-03 17:56:57,629 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1561685210, now seen corresponding path program 167 times [2022-03-03 17:56:57,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:57,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946035594] [2022-03-03 17:56:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:57,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:57,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946035594] [2022-03-03 17:56:57,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946035594] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:57,949 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:57,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:56:57,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238000004] [2022-03-03 17:56:57,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:57,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:56:57,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:56:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:56:57,949 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) [2022-03-03 17:56:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:58,814 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-03 17:56:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:56:58,814 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 [2022-03-03 17:56:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:58,816 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 17:56:58,816 INFO L226 Difference]: Without dead ends: 1043 [2022-03-03 17:56:58,816 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 [2022-03-03 17:56:58,816 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:58,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2366 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-03 17:56:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1015. [2022-03-03 17:56:58,824 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) [2022-03-03 17:56:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2523 transitions. [2022-03-03 17:56:58,825 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2523 transitions. Word has length 79 [2022-03-03 17:56:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:58,826 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2523 transitions. [2022-03-03 17:56:58,826 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) [2022-03-03 17:56:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2523 transitions. [2022-03-03 17:56:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:56:58,827 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:58,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:58,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-03 17:56:58,827 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 441084520, now seen corresponding path program 168 times [2022-03-03 17:56:58,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:58,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593142067] [2022-03-03 17:56:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:58,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:59,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:59,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593142067] [2022-03-03 17:56:59,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593142067] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:56:59,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:56:59,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:56:59,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924371529] [2022-03-03 17:56:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:56:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:56:59,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:56:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:56:59,232 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) [2022-03-03 17:57:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:00,720 INFO L93 Difference]: Finished difference Result 1337 states and 3338 transitions. [2022-03-03 17:57:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:57:00,720 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 [2022-03-03 17:57:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:00,722 INFO L225 Difference]: With dead ends: 1337 [2022-03-03 17:57:00,722 INFO L226 Difference]: Without dead ends: 1207 [2022-03-03 17:57:00,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:57:00,722 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 303 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:00,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2945 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:57:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-03 17:57:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-03-03 17:57:00,731 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) [2022-03-03 17:57:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-03-03 17:57:00,733 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-03-03 17:57:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:00,733 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-03-03 17:57:00,733 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) [2022-03-03 17:57:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-03-03 17:57:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:00,734 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:00,734 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] [2022-03-03 17:57:00,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-03 17:57:00,734 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash -412306646, now seen corresponding path program 169 times [2022-03-03 17:57:00,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:00,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341969362] [2022-03-03 17:57:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:01,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:01,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341969362] [2022-03-03 17:57:01,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341969362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:01,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:01,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:57:01,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554377631] [2022-03-03 17:57:01,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:01,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:57:01,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:57:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:57:01,079 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) [2022-03-03 17:57:02,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:02,510 INFO L93 Difference]: Finished difference Result 1336 states and 3329 transitions. [2022-03-03 17:57:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:57:02,511 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 [2022-03-03 17:57:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:02,512 INFO L225 Difference]: With dead ends: 1336 [2022-03-03 17:57:02,512 INFO L226 Difference]: Without dead ends: 1238 [2022-03-03 17:57:02,513 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 [2022-03-03 17:57:02,513 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 286 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:02,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2923 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:57:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-03-03 17:57:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1103. [2022-03-03 17:57:02,522 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) [2022-03-03 17:57:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2753 transitions. [2022-03-03 17:57:02,523 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2753 transitions. Word has length 79 [2022-03-03 17:57:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:02,523 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2753 transitions. [2022-03-03 17:57:02,523 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) [2022-03-03 17:57:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2753 transitions. [2022-03-03 17:57:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:02,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:02,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:02,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-03 17:57:02,530 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash 301930632, now seen corresponding path program 170 times [2022-03-03 17:57:02,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:02,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124582657] [2022-03-03 17:57:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:02,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:02,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124582657] [2022-03-03 17:57:02,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124582657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:02,907 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:02,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:57:02,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729369325] [2022-03-03 17:57:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:02,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:57:02,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:57:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:57:02,908 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) [2022-03-03 17:57:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:04,464 INFO L93 Difference]: Finished difference Result 1319 states and 3280 transitions. [2022-03-03 17:57:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:57:04,464 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 [2022-03-03 17:57:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:04,466 INFO L225 Difference]: With dead ends: 1319 [2022-03-03 17:57:04,466 INFO L226 Difference]: Without dead ends: 1206 [2022-03-03 17:57:04,467 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 [2022-03-03 17:57:04,467 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 356 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:04,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2855 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:57:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-03 17:57:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1091. [2022-03-03 17:57:04,483 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) [2022-03-03 17:57:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-03 17:57:04,484 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-03 17:57:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:04,484 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-03 17:57:04,484 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) [2022-03-03 17:57:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-03 17:57:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:04,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:04,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:04,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-03 17:57:04,485 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 627378858, now seen corresponding path program 171 times [2022-03-03 17:57:04,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:04,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925975567] [2022-03-03 17:57:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:04,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:04,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925975567] [2022-03-03 17:57:04,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925975567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:04,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:04,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:57:04,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223746106] [2022-03-03 17:57:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:04,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:57:04,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:57:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:57:04,825 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) [2022-03-03 17:57:07,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:57:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:08,208 INFO L93 Difference]: Finished difference Result 1313 states and 3260 transitions. [2022-03-03 17:57:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:57:08,209 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 [2022-03-03 17:57:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:08,210 INFO L225 Difference]: With dead ends: 1313 [2022-03-03 17:57:08,210 INFO L226 Difference]: Without dead ends: 1163 [2022-03-03 17:57:08,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=2428, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:57:08,211 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 302 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:08,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2839 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 17:57:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-03-03 17:57:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1087. [2022-03-03 17:57:08,227 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) [2022-03-03 17:57:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-03 17:57:08,228 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-03 17:57:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:08,228 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-03 17:57:08,228 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) [2022-03-03 17:57:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-03 17:57:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:08,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:08,229 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] [2022-03-03 17:57:08,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-03 17:57:08,229 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1488961192, now seen corresponding path program 172 times [2022-03-03 17:57:08,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:08,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077829884] [2022-03-03 17:57:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:08,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:08,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077829884] [2022-03-03 17:57:08,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077829884] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:08,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:08,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:08,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148716422] [2022-03-03 17:57:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:08,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:08,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:08,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:08,555 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) [2022-03-03 17:57:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:10,489 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-03-03 17:57:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:57:10,489 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 [2022-03-03 17:57:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:10,491 INFO L225 Difference]: With dead ends: 1318 [2022-03-03 17:57:10,491 INFO L226 Difference]: Without dead ends: 1220 [2022-03-03 17:57:10,491 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 [2022-03-03 17:57:10,491 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 288 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:10,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2725 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:57:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-03 17:57:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1111. [2022-03-03 17:57:10,500 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) [2022-03-03 17:57:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-03 17:57:10,501 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-03 17:57:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:10,501 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-03 17:57:10,501 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) [2022-03-03 17:57:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-03 17:57:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:10,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:10,508 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] [2022-03-03 17:57:10,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-03-03 17:57:10,508 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473212, now seen corresponding path program 173 times [2022-03-03 17:57:10,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:10,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623413865] [2022-03-03 17:57:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:10,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:10,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623413865] [2022-03-03 17:57:10,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623413865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:10,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:10,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:10,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514628984] [2022-03-03 17:57:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:10,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:10,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:10,863 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) [2022-03-03 17:57:13,171 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 [] [2022-03-03 17:57:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:13,848 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-03 17:57:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:57:13,848 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 [2022-03-03 17:57:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:13,850 INFO L225 Difference]: With dead ends: 1286 [2022-03-03 17:57:13,850 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:57:13,850 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 [2022-03-03 17:57:13,850 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 267 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:13,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2805 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-03 17:57:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:57:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-03 17:57:13,859 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) [2022-03-03 17:57:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-03-03 17:57:13,860 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-03-03 17:57:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:13,860 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-03-03 17:57:13,860 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) [2022-03-03 17:57:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-03-03 17:57:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:13,861 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:13,861 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] [2022-03-03 17:57:13,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-03 17:57:13,861 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash 782695082, now seen corresponding path program 174 times [2022-03-03 17:57:13,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:13,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235496198] [2022-03-03 17:57:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:13,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:14,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:14,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235496198] [2022-03-03 17:57:14,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235496198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:14,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:14,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:14,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825278979] [2022-03-03 17:57:14,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:14,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:14,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:14,190 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) [2022-03-03 17:57:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:15,316 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-03 17:57:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:57:15,316 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 [2022-03-03 17:57:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:15,318 INFO L225 Difference]: With dead ends: 1281 [2022-03-03 17:57:15,318 INFO L226 Difference]: Without dead ends: 1167 [2022-03-03 17:57:15,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:57:15,319 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 255 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:15,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2631 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-03 17:57:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1087. [2022-03-03 17:57:15,327 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) [2022-03-03 17:57:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-03 17:57:15,328 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-03 17:57:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:15,329 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-03 17:57:15,329 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) [2022-03-03 17:57:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-03 17:57:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:15,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:15,330 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] [2022-03-03 17:57:15,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-03-03 17:57:15,330 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 415800652, now seen corresponding path program 175 times [2022-03-03 17:57:15,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:15,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981604157] [2022-03-03 17:57:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:15,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:15,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:15,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981604157] [2022-03-03 17:57:15,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981604157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:15,651 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:15,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:15,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711964419] [2022-03-03 17:57:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:15,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:15,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:15,652 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) [2022-03-03 17:57:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:17,185 INFO L93 Difference]: Finished difference Result 1292 states and 3204 transitions. [2022-03-03 17:57:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:57:17,186 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 [2022-03-03 17:57:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:17,187 INFO L225 Difference]: With dead ends: 1292 [2022-03-03 17:57:17,187 INFO L226 Difference]: Without dead ends: 1194 [2022-03-03 17:57:17,188 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 [2022-03-03 17:57:17,188 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 264 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:17,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2841 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:57:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-03 17:57:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-03-03 17:57:17,200 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) [2022-03-03 17:57:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-03-03 17:57:17,201 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-03-03 17:57:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:17,202 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-03-03 17:57:17,202 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) [2022-03-03 17:57:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-03-03 17:57:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:17,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:17,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:17,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-03-03 17:57:17,203 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1130037930, now seen corresponding path program 176 times [2022-03-03 17:57:17,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:17,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30057693] [2022-03-03 17:57:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:17,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:17,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30057693] [2022-03-03 17:57:17,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30057693] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:17,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:17,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:17,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217275738] [2022-03-03 17:57:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:17,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:17,535 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) [2022-03-03 17:57:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:18,718 INFO L93 Difference]: Finished difference Result 1260 states and 3120 transitions. [2022-03-03 17:57:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:57:18,718 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 [2022-03-03 17:57:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:18,720 INFO L225 Difference]: With dead ends: 1260 [2022-03-03 17:57:18,720 INFO L226 Difference]: Without dead ends: 1151 [2022-03-03 17:57:18,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:57:18,720 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 278 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:18,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2637 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:57:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-03 17:57:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1083. [2022-03-03 17:57:18,729 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) [2022-03-03 17:57:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-03 17:57:18,730 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-03 17:57:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:18,730 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-03 17:57:18,730 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) [2022-03-03 17:57:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-03 17:57:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:18,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:18,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:18,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-03 17:57:18,731 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1600728744, now seen corresponding path program 177 times [2022-03-03 17:57:18,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:18,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142117106] [2022-03-03 17:57:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:19,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:19,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142117106] [2022-03-03 17:57:19,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142117106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:19,054 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:19,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:19,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827378196] [2022-03-03 17:57:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:19,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:19,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:19,055 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) [2022-03-03 17:57:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:20,371 INFO L93 Difference]: Finished difference Result 1314 states and 3256 transitions. [2022-03-03 17:57:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:57:20,372 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 [2022-03-03 17:57:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:20,373 INFO L225 Difference]: With dead ends: 1314 [2022-03-03 17:57:20,373 INFO L226 Difference]: Without dead ends: 1216 [2022-03-03 17:57:20,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:57:20,374 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 268 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:20,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2781 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:57:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-03-03 17:57:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1107. [2022-03-03 17:57:20,383 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) [2022-03-03 17:57:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-03 17:57:20,385 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-03 17:57:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:20,385 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-03 17:57:20,385 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) [2022-03-03 17:57:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-03 17:57:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:20,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:20,386 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] [2022-03-03 17:57:20,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-03 17:57:20,386 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1377705660, now seen corresponding path program 178 times [2022-03-03 17:57:20,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:20,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003109270] [2022-03-03 17:57:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:20,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:20,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003109270] [2022-03-03 17:57:20,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003109270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:20,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:20,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:20,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385067399] [2022-03-03 17:57:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:20,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:20,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:20,750 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) [2022-03-03 17:57:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:21,977 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-03 17:57:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:57:21,978 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 [2022-03-03 17:57:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:21,979 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 17:57:21,979 INFO L226 Difference]: Without dead ends: 1139 [2022-03-03 17:57:21,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:57:21,980 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 267 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:21,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2878 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-03 17:57:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1075. [2022-03-03 17:57:21,991 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) [2022-03-03 17:57:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:57:21,992 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:57:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:21,993 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:57:21,993 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) [2022-03-03 17:57:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:57:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:21,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:21,994 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] [2022-03-03 17:57:21,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-03 17:57:21,994 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1860354682, now seen corresponding path program 179 times [2022-03-03 17:57:21,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:21,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358651780] [2022-03-03 17:57:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:22,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:22,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358651780] [2022-03-03 17:57:22,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358651780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:22,344 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:22,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:57:22,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628884055] [2022-03-03 17:57:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:22,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:57:22,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:57:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:57:22,344 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) [2022-03-03 17:57:24,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:24,521 INFO L93 Difference]: Finished difference Result 1357 states and 3364 transitions. [2022-03-03 17:57:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:57:24,522 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 [2022-03-03 17:57:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:24,524 INFO L225 Difference]: With dead ends: 1357 [2022-03-03 17:57:24,524 INFO L226 Difference]: Without dead ends: 1259 [2022-03-03 17:57:24,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:57:24,524 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 301 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:24,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3220 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 17:57:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-03 17:57:24,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1103. [2022-03-03 17:57:24,534 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) [2022-03-03 17:57:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-03 17:57:24,535 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-03 17:57:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-03 17:57:24,535 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) [2022-03-03 17:57:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-03 17:57:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:24,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:24,536 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] [2022-03-03 17:57:24,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-03 17:57:24,536 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash -543821790, now seen corresponding path program 180 times [2022-03-03 17:57:24,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:24,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969530262] [2022-03-03 17:57:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:24,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:24,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969530262] [2022-03-03 17:57:24,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969530262] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:24,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:24,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:57:24,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200812703] [2022-03-03 17:57:24,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:24,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:57:24,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:57:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:57:24,897 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) [2022-03-03 17:57:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:26,338 INFO L93 Difference]: Finished difference Result 1313 states and 3247 transitions. [2022-03-03 17:57:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:57:26,338 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 [2022-03-03 17:57:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:26,340 INFO L225 Difference]: With dead ends: 1313 [2022-03-03 17:57:26,340 INFO L226 Difference]: Without dead ends: 1178 [2022-03-03 17:57:26,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:57:26,340 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 303 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:26,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 3063 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:57:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-03-03 17:57:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1079. [2022-03-03 17:57:26,350 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) [2022-03-03 17:57:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-03 17:57:26,351 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-03 17:57:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:26,351 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-03 17:57:26,351 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) [2022-03-03 17:57:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-03 17:57:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:26,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:26,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:26,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-03 17:57:26,352 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:26,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1674336820, now seen corresponding path program 181 times [2022-03-03 17:57:26,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:26,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675583152] [2022-03-03 17:57:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:26,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:26,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675583152] [2022-03-03 17:57:26,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675583152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:26,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:26,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:26,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688421889] [2022-03-03 17:57:26,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:26,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:26,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:26,696 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) [2022-03-03 17:57:28,847 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 [] [2022-03-03 17:57:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:29,469 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-03-03 17:57:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:57:29,470 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 [2022-03-03 17:57:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:29,471 INFO L225 Difference]: With dead ends: 1301 [2022-03-03 17:57:29,471 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:57:29,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:57:29,472 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 311 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:29,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2719 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 17:57:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:57:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-03 17:57:29,480 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) [2022-03-03 17:57:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-03 17:57:29,482 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-03 17:57:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:29,482 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-03 17:57:29,482 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) [2022-03-03 17:57:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-03 17:57:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:29,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:29,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:29,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-03 17:57:29,483 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1232646802, now seen corresponding path program 182 times [2022-03-03 17:57:29,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:29,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039829898] [2022-03-03 17:57:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:29,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:29,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039829898] [2022-03-03 17:57:29,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039829898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:29,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:29,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:29,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858021638] [2022-03-03 17:57:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:29,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:29,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:29,818 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) [2022-03-03 17:57:33,738 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 [] [2022-03-03 17:57:34,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:34,264 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-03 17:57:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:57:34,264 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 [2022-03-03 17:57:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:34,266 INFO L225 Difference]: With dead ends: 1339 [2022-03-03 17:57:34,266 INFO L226 Difference]: Without dead ends: 1241 [2022-03-03 17:57:34,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2430, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:57:34,266 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 311 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:34,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2626 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1012 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-03 17:57:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-03 17:57:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1111. [2022-03-03 17:57:34,278 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) [2022-03-03 17:57:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-03 17:57:34,280 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-03 17:57:34,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:34,280 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-03 17:57:34,280 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) [2022-03-03 17:57:34,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-03 17:57:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:34,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:34,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:34,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-03 17:57:34,281 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash 83886090, now seen corresponding path program 183 times [2022-03-03 17:57:34,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:34,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895791455] [2022-03-03 17:57:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:34,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:34,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:34,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895791455] [2022-03-03 17:57:34,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895791455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:34,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:34,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:34,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787316804] [2022-03-03 17:57:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:34,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:34,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:34,620 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) [2022-03-03 17:57:37,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:57:40,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:57:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:40,573 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-03 17:57:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:57:40,574 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 [2022-03-03 17:57:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:40,575 INFO L225 Difference]: With dead ends: 1307 [2022-03-03 17:57:40,575 INFO L226 Difference]: Without dead ends: 1172 [2022-03-03 17:57:40,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2329, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:57:40,576 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 287 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:40,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2872 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-03 17:57:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-03 17:57:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1087. [2022-03-03 17:57:40,588 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) [2022-03-03 17:57:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:57:40,590 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:57:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:40,590 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:57:40,590 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) [2022-03-03 17:57:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:57:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:40,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:40,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:40,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-03 17:57:40,592 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1284119474, now seen corresponding path program 184 times [2022-03-03 17:57:40,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:40,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617711497] [2022-03-03 17:57:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:41,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:41,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617711497] [2022-03-03 17:57:41,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617711497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:41,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:41,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:41,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514426678] [2022-03-03 17:57:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:41,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:41,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:41,006 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) [2022-03-03 17:57:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:42,236 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-03 17:57:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:57:42,237 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 [2022-03-03 17:57:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:42,238 INFO L225 Difference]: With dead ends: 1283 [2022-03-03 17:57:42,238 INFO L226 Difference]: Without dead ends: 1079 [2022-03-03 17:57:42,238 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 [2022-03-03 17:57:42,239 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 292 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:42,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2509 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:57:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-03 17:57:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-03-03 17:57:42,249 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) [2022-03-03 17:57:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2581 transitions. [2022-03-03 17:57:42,250 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2581 transitions. Word has length 79 [2022-03-03 17:57:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:42,250 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2581 transitions. [2022-03-03 17:57:42,250 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) [2022-03-03 17:57:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2581 transitions. [2022-03-03 17:57:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:42,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:42,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:42,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-03-03 17:57:42,252 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:42,252 INFO L85 PathProgramCache]: Analyzing trace with hash -399222648, now seen corresponding path program 185 times [2022-03-03 17:57:42,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:42,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397124631] [2022-03-03 17:57:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:42,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:42,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397124631] [2022-03-03 17:57:42,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397124631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:42,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:42,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:42,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360325316] [2022-03-03 17:57:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:42,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:42,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:42,560 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) [2022-03-03 17:57:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:43,469 INFO L93 Difference]: Finished difference Result 1257 states and 3114 transitions. [2022-03-03 17:57:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:57:43,469 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 [2022-03-03 17:57:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:43,471 INFO L225 Difference]: With dead ends: 1257 [2022-03-03 17:57:43,471 INFO L226 Difference]: Without dead ends: 1143 [2022-03-03 17:57:43,471 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 [2022-03-03 17:57:43,471 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 265 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 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 [2022-03-03 17:57:43,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2127 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-03 17:57:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1075. [2022-03-03 17:57:43,480 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) [2022-03-03 17:57:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:57:43,481 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:57:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:43,481 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:57:43,481 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) [2022-03-03 17:57:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:57:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:43,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:43,482 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] [2022-03-03 17:57:43,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-03-03 17:57:43,482 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash -766117078, now seen corresponding path program 186 times [2022-03-03 17:57:43,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:43,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629864398] [2022-03-03 17:57:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:43,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:43,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629864398] [2022-03-03 17:57:43,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629864398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:43,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:43,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:43,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562329191] [2022-03-03 17:57:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:43,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:43,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:43,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:43,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:43,786 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) [2022-03-03 17:57:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:44,764 INFO L93 Difference]: Finished difference Result 1268 states and 3138 transitions. [2022-03-03 17:57:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:57:44,764 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 [2022-03-03 17:57:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:44,765 INFO L225 Difference]: With dead ends: 1268 [2022-03-03 17:57:44,765 INFO L226 Difference]: Without dead ends: 1170 [2022-03-03 17:57:44,766 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 [2022-03-03 17:57:44,766 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 273 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2459 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-03 17:57:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1079. [2022-03-03 17:57:44,775 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) [2022-03-03 17:57:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-03 17:57:44,776 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-03 17:57:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:44,776 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-03 17:57:44,776 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) [2022-03-03 17:57:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-03 17:57:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:44,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:44,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:44,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-03-03 17:57:44,777 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -51879800, now seen corresponding path program 187 times [2022-03-03 17:57:44,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:44,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169325239] [2022-03-03 17:57:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:45,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:45,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169325239] [2022-03-03 17:57:45,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169325239] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:45,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:45,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:45,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94440797] [2022-03-03 17:57:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:45,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:45,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:45,089 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) [2022-03-03 17:57:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:46,020 INFO L93 Difference]: Finished difference Result 1236 states and 3054 transitions. [2022-03-03 17:57:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:57:46,021 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 [2022-03-03 17:57:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:46,022 INFO L225 Difference]: With dead ends: 1236 [2022-03-03 17:57:46,022 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:57:46,022 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 [2022-03-03 17:57:46,022 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 283 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:46,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2386 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:57:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1071. [2022-03-03 17:57:46,031 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) [2022-03-03 17:57:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-03 17:57:46,032 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-03 17:57:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:46,032 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-03 17:57:46,032 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) [2022-03-03 17:57:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-03 17:57:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:46,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:46,033 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] [2022-03-03 17:57:46,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-03 17:57:46,033 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:46,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash 418811014, now seen corresponding path program 188 times [2022-03-03 17:57:46,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:46,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554749813] [2022-03-03 17:57:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:46,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:46,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554749813] [2022-03-03 17:57:46,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554749813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:46,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:46,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:46,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463077055] [2022-03-03 17:57:46,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:46,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:46,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:46,357 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) [2022-03-03 17:57:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:47,933 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-03-03 17:57:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:57:47,933 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 [2022-03-03 17:57:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:47,935 INFO L225 Difference]: With dead ends: 1290 [2022-03-03 17:57:47,935 INFO L226 Difference]: Without dead ends: 1192 [2022-03-03 17:57:47,935 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 [2022-03-03 17:57:47,935 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 261 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:47,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2525 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:57:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-03 17:57:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1095. [2022-03-03 17:57:47,946 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) [2022-03-03 17:57:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-03 17:57:47,947 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-03 17:57:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:47,947 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-03 17:57:47,947 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) [2022-03-03 17:57:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-03 17:57:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:47,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:47,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:47,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-03 17:57:47,949 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1735343906, now seen corresponding path program 189 times [2022-03-03 17:57:47,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:47,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238203450] [2022-03-03 17:57:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:48,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:48,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238203450] [2022-03-03 17:57:48,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238203450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:48,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:48,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:48,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721948404] [2022-03-03 17:57:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:48,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:48,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:48,263 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) [2022-03-03 17:57:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:49,222 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-03-03 17:57:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:57:49,222 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 [2022-03-03 17:57:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:49,224 INFO L225 Difference]: With dead ends: 1258 [2022-03-03 17:57:49,224 INFO L226 Difference]: Without dead ends: 1115 [2022-03-03 17:57:49,224 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 [2022-03-03 17:57:49,224 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 278 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:49,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2365 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-03 17:57:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-03 17:57:49,232 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) [2022-03-03 17:57:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-03 17:57:49,233 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-03 17:57:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:49,233 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-03 17:57:49,233 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) [2022-03-03 17:57:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-03 17:57:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:49,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:49,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-03 17:57:49,235 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1252694884, now seen corresponding path program 190 times [2022-03-03 17:57:49,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:49,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711131562] [2022-03-03 17:57:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:49,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:49,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:49,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711131562] [2022-03-03 17:57:49,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711131562] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:49,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:49,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:49,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048346555] [2022-03-03 17:57:49,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:49,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:49,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:49,565 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) [2022-03-03 17:57:52,645 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 [] [2022-03-03 17:57:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:52,835 INFO L93 Difference]: Finished difference Result 1413 states and 3468 transitions. [2022-03-03 17:57:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:57:52,835 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 [2022-03-03 17:57:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:52,837 INFO L225 Difference]: With dead ends: 1413 [2022-03-03 17:57:52,837 INFO L226 Difference]: Without dead ends: 1315 [2022-03-03 17:57:52,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2614, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:57:52,837 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 362 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:52,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2818 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1064 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-03 17:57:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-03-03 17:57:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1079. [2022-03-03 17:57:52,846 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) [2022-03-03 17:57:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-03 17:57:52,847 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-03 17:57:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:52,847 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-03 17:57:52,847 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) [2022-03-03 17:57:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-03 17:57:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:52,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:52,849 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] [2022-03-03 17:57:52,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-03 17:57:52,849 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1966932162, now seen corresponding path program 191 times [2022-03-03 17:57:52,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:52,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190534474] [2022-03-03 17:57:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:53,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:53,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190534474] [2022-03-03 17:57:53,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190534474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:53,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:53,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:53,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749928919] [2022-03-03 17:57:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:53,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:53,175 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) [2022-03-03 17:57:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:54,353 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-03 17:57:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:57:54,353 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 [2022-03-03 17:57:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:54,355 INFO L225 Difference]: With dead ends: 1305 [2022-03-03 17:57:54,355 INFO L226 Difference]: Without dead ends: 1154 [2022-03-03 17:57:54,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:57:54,355 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 333 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:54,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2649 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-03 17:57:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1067. [2022-03-03 17:57:54,363 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) [2022-03-03 17:57:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-03 17:57:54,364 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-03 17:57:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:54,364 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-03 17:57:54,364 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) [2022-03-03 17:57:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-03 17:57:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:54,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:54,365 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] [2022-03-03 17:57:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-03 17:57:54,367 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1438712746, now seen corresponding path program 192 times [2022-03-03 17:57:54,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:54,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968592146] [2022-03-03 17:57:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:54,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:54,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:54,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968592146] [2022-03-03 17:57:54,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968592146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:54,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:54,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:57:54,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133233200] [2022-03-03 17:57:54,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:54,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:57:54,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:54,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:57:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:57:54,688 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) [2022-03-03 17:57:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:55,637 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-03 17:57:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:57:55,637 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 [2022-03-03 17:57:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:55,638 INFO L225 Difference]: With dead ends: 1277 [2022-03-03 17:57:55,638 INFO L226 Difference]: Without dead ends: 1111 [2022-03-03 17:57:55,639 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 [2022-03-03 17:57:55,639 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:55,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2443 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-03-03 17:57:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1059. [2022-03-03 17:57:55,648 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) [2022-03-03 17:57:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-03 17:57:55,649 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-03 17:57:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:55,650 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-03 17:57:55,650 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) [2022-03-03 17:57:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-03 17:57:55,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:55,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:55,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:55,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-03 17:57:55,652 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash -393906834, now seen corresponding path program 193 times [2022-03-03 17:57:55,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:55,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825664234] [2022-03-03 17:57:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:56,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:56,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825664234] [2022-03-03 17:57:56,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825664234] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:56,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:56,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:56,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321300784] [2022-03-03 17:57:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:56,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:56,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:56,059 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) [2022-03-03 17:57:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:57,638 INFO L93 Difference]: Finished difference Result 1335 states and 3295 transitions. [2022-03-03 17:57:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:57:57,639 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 [2022-03-03 17:57:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:57,641 INFO L225 Difference]: With dead ends: 1335 [2022-03-03 17:57:57,641 INFO L226 Difference]: Without dead ends: 1237 [2022-03-03 17:57:57,641 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 [2022-03-03 17:57:57,641 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 285 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:57,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2864 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:57:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-03 17:57:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1107. [2022-03-03 17:57:57,650 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) [2022-03-03 17:57:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-03 17:57:57,651 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-03 17:57:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:57,651 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-03 17:57:57,651 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) [2022-03-03 17:57:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-03 17:57:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:57:57,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:57,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:57,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-03 17:57:57,653 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash 922626058, now seen corresponding path program 194 times [2022-03-03 17:57:57,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:57,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887309157] [2022-03-03 17:57:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:57,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:57,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887309157] [2022-03-03 17:57:57,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887309157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:57:57,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:57:57,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:57:57,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885591952] [2022-03-03 17:57:57,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:57:57,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:57:57,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:57:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:57:57,988 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) [2022-03-03 17:58:00,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:58:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:01,704 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-03 17:58:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:58:01,705 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 [2022-03-03 17:58:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:01,706 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 17:58:01,706 INFO L226 Difference]: Without dead ends: 1168 [2022-03-03 17:58:01,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:58:01,706 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 302 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:01,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2684 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-03 17:58:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-03 17:58:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1083. [2022-03-03 17:58:01,715 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) [2022-03-03 17:58:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-03-03 17:58:01,716 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-03-03 17:58:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:01,716 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-03-03 17:58:01,716 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) [2022-03-03 17:58:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-03-03 17:58:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:01,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:01,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:01,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-03 17:58:01,717 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -445379506, now seen corresponding path program 195 times [2022-03-03 17:58:01,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:01,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063788673] [2022-03-03 17:58:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:02,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:02,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063788673] [2022-03-03 17:58:02,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063788673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:02,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:02,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:58:02,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959461917] [2022-03-03 17:58:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:02,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:58:02,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:58:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:58:02,033 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) [2022-03-03 17:58:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:02,986 INFO L93 Difference]: Finished difference Result 1279 states and 3141 transitions. [2022-03-03 17:58:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:58:02,986 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 [2022-03-03 17:58:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:02,988 INFO L225 Difference]: With dead ends: 1279 [2022-03-03 17:58:02,988 INFO L226 Difference]: Without dead ends: 1091 [2022-03-03 17:58:02,988 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 [2022-03-03 17:58:02,988 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 271 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:02,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2319 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-03 17:58:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-03 17:58:02,996 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) [2022-03-03 17:58:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-03 17:58:02,998 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-03 17:58:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:02,998 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-03 17:58:02,998 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) [2022-03-03 17:58:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-03 17:58:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:02,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:02,999 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] [2022-03-03 17:58:02,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-03 17:58:02,999 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1055912688, now seen corresponding path program 196 times [2022-03-03 17:58:02,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:02,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590713010] [2022-03-03 17:58:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:03,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:03,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590713010] [2022-03-03 17:58:03,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590713010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:03,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:03,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:03,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249377680] [2022-03-03 17:58:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:03,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:03,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:03,344 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) [2022-03-03 17:58:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:04,926 INFO L93 Difference]: Finished difference Result 1375 states and 3401 transitions. [2022-03-03 17:58:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:58:04,927 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 [2022-03-03 17:58:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:04,928 INFO L225 Difference]: With dead ends: 1375 [2022-03-03 17:58:04,928 INFO L226 Difference]: Without dead ends: 1277 [2022-03-03 17:58:04,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:58:04,929 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 307 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:04,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2880 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:58:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-03-03 17:58:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1103. [2022-03-03 17:58:04,938 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) [2022-03-03 17:58:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-03 17:58:04,939 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-03 17:58:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:04,939 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-03 17:58:04,939 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) [2022-03-03 17:58:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-03 17:58:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:04,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:04,940 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] [2022-03-03 17:58:04,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-03 17:58:04,940 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash 260620204, now seen corresponding path program 197 times [2022-03-03 17:58:04,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:04,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773275251] [2022-03-03 17:58:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:04,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:05,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:05,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773275251] [2022-03-03 17:58:05,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773275251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:05,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:05,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:05,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890236545] [2022-03-03 17:58:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:05,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:05,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:05,281 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) [2022-03-03 17:58:07,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:58:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:08,191 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-03-03 17:58:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:58:08,191 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 [2022-03-03 17:58:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:08,193 INFO L225 Difference]: With dead ends: 1331 [2022-03-03 17:58:08,193 INFO L226 Difference]: Without dead ends: 1196 [2022-03-03 17:58:08,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=2939, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:58:08,194 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 325 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:08,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 3022 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 17:58:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-03-03 17:58:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1079. [2022-03-03 17:58:08,202 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) [2022-03-03 17:58:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-03-03 17:58:08,203 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-03-03 17:58:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:08,203 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-03-03 17:58:08,203 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) [2022-03-03 17:58:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-03-03 17:58:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:08,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:08,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:08,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-03 17:58:08,204 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1107385360, now seen corresponding path program 198 times [2022-03-03 17:58:08,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:08,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342392679] [2022-03-03 17:58:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:08,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:08,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342392679] [2022-03-03 17:58:08,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342392679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:08,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:08,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:58:08,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102922416] [2022-03-03 17:58:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:08,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:58:08,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:58:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:58:08,534 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) [2022-03-03 17:58:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:09,629 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-03 17:58:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:58:09,629 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 [2022-03-03 17:58:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:09,631 INFO L225 Difference]: With dead ends: 1295 [2022-03-03 17:58:09,631 INFO L226 Difference]: Without dead ends: 1115 [2022-03-03 17:58:09,631 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 [2022-03-03 17:58:09,631 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 312 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:09,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2510 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-03 17:58:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1055. [2022-03-03 17:58:09,639 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) [2022-03-03 17:58:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-03-03 17:58:09,641 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-03-03 17:58:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:09,641 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-03-03 17:58:09,641 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) [2022-03-03 17:58:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-03-03 17:58:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:09,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:09,642 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] [2022-03-03 17:58:09,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-03 17:58:09,642 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 878106760, now seen corresponding path program 199 times [2022-03-03 17:58:09,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:09,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278172878] [2022-03-03 17:58:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:09,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:09,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278172878] [2022-03-03 17:58:09,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278172878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:09,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:09,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:58:09,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967293809] [2022-03-03 17:58:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:09,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:58:09,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:58:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:58:09,996 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) [2022-03-03 17:58:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:10,959 INFO L93 Difference]: Finished difference Result 1310 states and 3220 transitions. [2022-03-03 17:58:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:58:10,959 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 [2022-03-03 17:58:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:10,960 INFO L225 Difference]: With dead ends: 1310 [2022-03-03 17:58:10,961 INFO L226 Difference]: Without dead ends: 1079 [2022-03-03 17:58:10,961 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 [2022-03-03 17:58:10,961 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 285 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:10,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2734 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-03 17:58:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-03-03 17:58:10,969 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) [2022-03-03 17:58:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-03 17:58:10,971 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-03 17:58:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:10,971 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-03 17:58:10,971 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) [2022-03-03 17:58:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-03 17:58:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:10,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:10,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:10,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-03 17:58:10,972 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -817748414, now seen corresponding path program 200 times [2022-03-03 17:58:10,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:10,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635433628] [2022-03-03 17:58:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:11,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:11,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635433628] [2022-03-03 17:58:11,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635433628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:11,305 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:11,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:58:11,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89233363] [2022-03-03 17:58:11,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:11,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:58:11,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:58:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:58:11,305 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) [2022-03-03 17:58:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:12,741 INFO L93 Difference]: Finished difference Result 1355 states and 3346 transitions. [2022-03-03 17:58:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:58:12,742 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 [2022-03-03 17:58:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:12,743 INFO L225 Difference]: With dead ends: 1355 [2022-03-03 17:58:12,743 INFO L226 Difference]: Without dead ends: 1257 [2022-03-03 17:58:12,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:58:12,744 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 327 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:12,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2807 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:58:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-03 17:58:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1099. [2022-03-03 17:58:12,753 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) [2022-03-03 17:58:12,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 17:58:12,754 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 17:58:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:12,754 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 17:58:12,754 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) [2022-03-03 17:58:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 17:58:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:12,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:12,755 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] [2022-03-03 17:58:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-03-03 17:58:12,755 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 498784478, now seen corresponding path program 201 times [2022-03-03 17:58:12,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:12,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946652912] [2022-03-03 17:58:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:13,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:13,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946652912] [2022-03-03 17:58:13,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946652912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:13,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:13,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:58:13,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562194010] [2022-03-03 17:58:13,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:13,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:58:13,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:13,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:58:13,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:58:13,081 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) [2022-03-03 17:58:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:14,393 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-03-03 17:58:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:58:14,393 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 [2022-03-03 17:58:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:14,395 INFO L225 Difference]: With dead ends: 1311 [2022-03-03 17:58:14,395 INFO L226 Difference]: Without dead ends: 1176 [2022-03-03 17:58:14,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:58:14,395 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 330 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:14,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2511 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:58:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-03-03 17:58:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-03-03 17:58:14,404 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) [2022-03-03 17:58:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 17:58:14,405 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 17:58:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 17:58:14,405 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) [2022-03-03 17:58:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 17:58:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:14,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:14,406 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] [2022-03-03 17:58:14,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-03-03 17:58:14,406 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:14,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:14,407 INFO L85 PathProgramCache]: Analyzing trace with hash -869221086, now seen corresponding path program 202 times [2022-03-03 17:58:14,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:14,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953139595] [2022-03-03 17:58:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:14,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:14,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953139595] [2022-03-03 17:58:14,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953139595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:14,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:14,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:58:14,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418186227] [2022-03-03 17:58:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:14,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:58:14,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:58:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:58:14,719 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) [2022-03-03 17:58:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:16,125 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-03 17:58:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:58:16,126 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 [2022-03-03 17:58:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:16,127 INFO L225 Difference]: With dead ends: 1275 [2022-03-03 17:58:16,127 INFO L226 Difference]: Without dead ends: 1095 [2022-03-03 17:58:16,127 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 [2022-03-03 17:58:16,128 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 286 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:16,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2581 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:58:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-03-03 17:58:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1051. [2022-03-03 17:58:16,135 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) [2022-03-03 17:58:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2606 transitions. [2022-03-03 17:58:16,136 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2606 transitions. Word has length 79 [2022-03-03 17:58:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:16,137 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2606 transitions. [2022-03-03 17:58:16,137 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) [2022-03-03 17:58:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2606 transitions. [2022-03-03 17:58:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:16,138 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:16,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:16,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-03 17:58:16,138 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1116271034, now seen corresponding path program 203 times [2022-03-03 17:58:16,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:16,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238370927] [2022-03-03 17:58:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:16,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:16,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238370927] [2022-03-03 17:58:16,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238370927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:16,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:16,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-03 17:58:16,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481564096] [2022-03-03 17:58:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:16,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:58:16,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:58:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:58:16,436 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) [2022-03-03 17:58:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:17,248 INFO L93 Difference]: Finished difference Result 1298 states and 3187 transitions. [2022-03-03 17:58:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:58:17,249 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 [2022-03-03 17:58:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:17,250 INFO L225 Difference]: With dead ends: 1298 [2022-03-03 17:58:17,250 INFO L226 Difference]: Without dead ends: 1079 [2022-03-03 17:58:17,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:58:17,250 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 296 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:17,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2157 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-03 17:58:17,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1047. [2022-03-03 17:58:17,259 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) [2022-03-03 17:58:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2595 transitions. [2022-03-03 17:58:17,260 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2595 transitions. Word has length 79 [2022-03-03 17:58:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2595 transitions. [2022-03-03 17:58:17,260 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) [2022-03-03 17:58:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2595 transitions. [2022-03-03 17:58:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:17,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:17,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:17,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-03 17:58:17,261 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1223629364, now seen corresponding path program 204 times [2022-03-03 17:58:17,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:17,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821637370] [2022-03-03 17:58:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:17,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:17,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821637370] [2022-03-03 17:58:17,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821637370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:17,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:17,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-03 17:58:17,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953501786] [2022-03-03 17:58:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:17,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:58:17,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:58:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:58:17,564 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) [2022-03-03 17:58:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:18,428 INFO L93 Difference]: Finished difference Result 1316 states and 3224 transitions. [2022-03-03 17:58:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:58:18,428 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 [2022-03-03 17:58:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:18,429 INFO L225 Difference]: With dead ends: 1316 [2022-03-03 17:58:18,429 INFO L226 Difference]: Without dead ends: 1015 [2022-03-03 17:58:18,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:58:18,430 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 275 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:18,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2497 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-03 17:58:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 999. [2022-03-03 17:58:18,437 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) [2022-03-03 17:58:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2479 transitions. [2022-03-03 17:58:18,438 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2479 transitions. Word has length 79 [2022-03-03 17:58:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 2479 transitions. [2022-03-03 17:58:18,438 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) [2022-03-03 17:58:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2479 transitions. [2022-03-03 17:58:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:18,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:18,439 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] [2022-03-03 17:58:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-03 17:58:18,440 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash -183029144, now seen corresponding path program 205 times [2022-03-03 17:58:18,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:18,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93031818] [2022-03-03 17:58:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:18,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:18,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:18,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93031818] [2022-03-03 17:58:18,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93031818] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:18,797 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:18,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:58:18,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344477443] [2022-03-03 17:58:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:18,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:58:18,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:18,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:58:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:58:18,798 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) [2022-03-03 17:58:21,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:58:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:21,836 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-03-03 17:58:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:58:21,836 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 [2022-03-03 17:58:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:21,838 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 17:58:21,838 INFO L226 Difference]: Without dead ends: 1223 [2022-03-03 17:58:21,838 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 [2022-03-03 17:58:21,838 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 387 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:21,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 2841 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 17:58:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-03 17:58:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-03-03 17:58:21,848 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) [2022-03-03 17:58:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-03 17:58:21,849 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-03 17:58:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:21,849 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-03 17:58:21,849 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) [2022-03-03 17:58:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-03 17:58:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:21,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:21,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:21,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-03 17:58:21,851 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1036420310, now seen corresponding path program 206 times [2022-03-03 17:58:21,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:21,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130583576] [2022-03-03 17:58:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:22,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:22,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130583576] [2022-03-03 17:58:22,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130583576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:22,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:22,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:58:22,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762945497] [2022-03-03 17:58:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:22,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:58:22,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:58:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:58:22,262 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) [2022-03-03 17:58:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:24,133 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-03-03 17:58:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:58:24,133 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 [2022-03-03 17:58:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:24,135 INFO L225 Difference]: With dead ends: 1352 [2022-03-03 17:58:24,135 INFO L226 Difference]: Without dead ends: 1254 [2022-03-03 17:58:24,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:58:24,135 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 337 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:24,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 3086 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:58:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-03 17:58:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-03-03 17:58:24,144 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) [2022-03-03 17:58:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-03-03 17:58:24,145 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-03-03 17:58:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:24,145 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-03-03 17:58:24,146 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) [2022-03-03 17:58:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-03-03 17:58:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:24,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:24,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:24,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-03-03 17:58:24,147 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -322183032, now seen corresponding path program 207 times [2022-03-03 17:58:24,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:24,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090245040] [2022-03-03 17:58:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:24,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:24,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090245040] [2022-03-03 17:58:24,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090245040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:24,500 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:24,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:58:24,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873173184] [2022-03-03 17:58:24,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:24,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:58:24,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:58:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:58:24,500 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) [2022-03-03 17:58:27,576 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 [] [2022-03-03 17:58:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:28,110 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-03-03 17:58:28,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:58:28,110 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 [2022-03-03 17:58:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:28,112 INFO L225 Difference]: With dead ends: 1335 [2022-03-03 17:58:28,112 INFO L226 Difference]: Without dead ends: 1222 [2022-03-03 17:58:28,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:58:28,112 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 384 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:28,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 3132 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1223 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 17:58:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-03 17:58:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-03-03 17:58:28,124 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) [2022-03-03 17:58:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-03-03 17:58:28,125 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-03-03 17:58:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:28,125 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-03-03 17:58:28,125 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) [2022-03-03 17:58:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-03-03 17:58:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:28,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:28,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:28,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-03-03 17:58:28,126 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:28,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 3265194, now seen corresponding path program 208 times [2022-03-03 17:58:28,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:28,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926904401] [2022-03-03 17:58:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:28,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:28,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926904401] [2022-03-03 17:58:28,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926904401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:28,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:28,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:58:28,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544016320] [2022-03-03 17:58:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:28,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:58:28,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:58:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:58:28,474 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) [2022-03-03 17:58:31,111 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 [] [2022-03-03 17:58:33,779 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 [] [2022-03-03 17:58:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:34,342 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-03-03 17:58:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:58:34,343 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 [2022-03-03 17:58:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:34,344 INFO L225 Difference]: With dead ends: 1341 [2022-03-03 17:58:34,344 INFO L226 Difference]: Without dead ends: 1191 [2022-03-03 17:58:34,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=3271, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 17:58:34,345 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 365 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:34,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2998 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1172 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-03 17:58:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-03 17:58:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-03-03 17:58:34,354 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) [2022-03-03 17:58:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:58:34,355 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:58:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:34,355 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:58:34,355 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) [2022-03-03 17:58:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:58:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:34,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:34,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:34,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-03 17:58:34,356 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash 864847528, now seen corresponding path program 209 times [2022-03-03 17:58:34,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:34,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191271825] [2022-03-03 17:58:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:34,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:34,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:34,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191271825] [2022-03-03 17:58:34,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191271825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:34,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:34,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:34,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158653163] [2022-03-03 17:58:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:34,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:34,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:34,758 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) [2022-03-03 17:58:37,839 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 [] [2022-03-03 17:58:39,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:58:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:39,901 INFO L93 Difference]: Finished difference Result 1358 states and 3369 transitions. [2022-03-03 17:58:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:58:39,901 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 [2022-03-03 17:58:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:39,903 INFO L225 Difference]: With dead ends: 1358 [2022-03-03 17:58:39,903 INFO L226 Difference]: Without dead ends: 1260 [2022-03-03 17:58:39,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3138, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:58:39,904 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 327 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:39,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2868 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1171 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-03 17:58:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-03-03 17:58:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1115. [2022-03-03 17:58:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4865350089766607) internal successors, (2770), 1114 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2770 transitions. [2022-03-03 17:58:39,914 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2770 transitions. Word has length 79 [2022-03-03 17:58:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:39,914 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2770 transitions. [2022-03-03 17:58:39,914 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) [2022-03-03 17:58:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2770 transitions. [2022-03-03 17:58:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:39,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:39,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:39,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-03-03 17:58:39,916 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2113586876, now seen corresponding path program 210 times [2022-03-03 17:58:39,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:39,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751720252] [2022-03-03 17:58:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:39,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:40,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:40,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751720252] [2022-03-03 17:58:40,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751720252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:40,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:40,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:40,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051292316] [2022-03-03 17:58:40,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:40,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:40,354 INFO L87 Difference]: Start difference. First operand 1115 states and 2770 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) [2022-03-03 17:58:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:42,575 INFO L93 Difference]: Finished difference Result 1377 states and 3411 transitions. [2022-03-03 17:58:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:58:42,576 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 [2022-03-03 17:58:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:42,577 INFO L225 Difference]: With dead ends: 1377 [2022-03-03 17:58:42,577 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 17:58:42,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:58:42,578 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 311 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:42,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3016 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 17:58:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 17:58:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-03-03 17:58:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.481447124304267) internal successors, (2675), 1078 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-03-03 17:58:42,587 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 79 [2022-03-03 17:58:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:42,588 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-03-03 17:58:42,588 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) [2022-03-03 17:58:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-03-03 17:58:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:42,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:42,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:42,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-03-03 17:58:42,589 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash -360125050, now seen corresponding path program 211 times [2022-03-03 17:58:42,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:42,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708710791] [2022-03-03 17:58:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:42,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:42,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:42,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708710791] [2022-03-03 17:58:42,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708710791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:42,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:42,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:42,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527496412] [2022-03-03 17:58:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:42,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:42,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:42,936 INFO L87 Difference]: Start difference. First operand 1079 states and 2675 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) [2022-03-03 17:58:46,994 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 [] [2022-03-03 17:58:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:47,348 INFO L93 Difference]: Finished difference Result 1437 states and 3534 transitions. [2022-03-03 17:58:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:58:47,348 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 [2022-03-03 17:58:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:47,350 INFO L225 Difference]: With dead ends: 1437 [2022-03-03 17:58:47,350 INFO L226 Difference]: Without dead ends: 1311 [2022-03-03 17:58:47,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 17:58:47,350 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 374 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:47,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2852 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1135 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-03 17:58:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-03-03 17:58:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1083. [2022-03-03 17:58:47,359 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) [2022-03-03 17:58:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-03 17:58:47,361 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-03 17:58:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:47,361 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-03 17:58:47,361 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) [2022-03-03 17:58:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-03 17:58:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:47,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:47,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:47,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-03 17:58:47,362 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 158581418, now seen corresponding path program 212 times [2022-03-03 17:58:47,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:47,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755495534] [2022-03-03 17:58:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:47,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:47,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755495534] [2022-03-03 17:58:47,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755495534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:47,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:47,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:47,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468483898] [2022-03-03 17:58:47,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:47,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:47,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:47,696 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 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) [2022-03-03 17:58:50,416 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 [] [2022-03-03 17:58:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:51,097 INFO L93 Difference]: Finished difference Result 1297 states and 3220 transitions. [2022-03-03 17:58:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:58:51,097 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 [2022-03-03 17:58:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:51,099 INFO L225 Difference]: With dead ends: 1297 [2022-03-03 17:58:51,099 INFO L226 Difference]: Without dead ends: 1183 [2022-03-03 17:58:51,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=2631, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:58:51,100 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 325 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:51,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2686 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1067 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 17:58:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-03 17:58:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1087. [2022-03-03 17:58:51,108 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) [2022-03-03 17:58:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:58:51,109 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:58:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:51,109 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:58:51,109 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) [2022-03-03 17:58:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:58:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:51,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:51,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:51,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-03 17:58:51,111 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -208313012, now seen corresponding path program 213 times [2022-03-03 17:58:51,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:51,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800551628] [2022-03-03 17:58:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:51,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:51,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800551628] [2022-03-03 17:58:51,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800551628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:51,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:51,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:51,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515282887] [2022-03-03 17:58:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:51,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:51,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:51,450 INFO L87 Difference]: Start difference. First operand 1087 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) [2022-03-03 17:58:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:53,768 INFO L93 Difference]: Finished difference Result 1308 states and 3244 transitions. [2022-03-03 17:58:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:58:53,768 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 [2022-03-03 17:58:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:53,770 INFO L225 Difference]: With dead ends: 1308 [2022-03-03 17:58:53,770 INFO L226 Difference]: Without dead ends: 1210 [2022-03-03 17:58:53,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:58:53,770 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 333 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:53,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2762 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 17:58:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-03 17:58:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1087. [2022-03-03 17:58:53,779 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) [2022-03-03 17:58:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:58:53,780 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:58:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:53,780 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:58:53,780 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) [2022-03-03 17:58:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:58:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:53,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:53,781 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] [2022-03-03 17:58:53,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-03 17:58:53,782 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash 505924266, now seen corresponding path program 214 times [2022-03-03 17:58:53,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:53,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459465020] [2022-03-03 17:58:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:54,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:54,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459465020] [2022-03-03 17:58:54,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459465020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:54,119 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:54,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:54,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103328035] [2022-03-03 17:58:54,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:54,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:54,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:54,120 INFO L87 Difference]: Start difference. First operand 1087 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) [2022-03-03 17:58:56,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 17:58:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:57,001 INFO L93 Difference]: Finished difference Result 1276 states and 3160 transitions. [2022-03-03 17:58:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:58:57,001 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 [2022-03-03 17:58:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:57,003 INFO L225 Difference]: With dead ends: 1276 [2022-03-03 17:58:57,003 INFO L226 Difference]: Without dead ends: 1167 [2022-03-03 17:58:57,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=2717, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:58:57,003 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 343 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:57,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2564 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 17:58:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-03 17:58:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1083. [2022-03-03 17:58:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.489833641404806) internal successors, (2694), 1082 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2694 transitions. [2022-03-03 17:58:57,013 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2694 transitions. Word has length 79 [2022-03-03 17:58:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:57,013 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2694 transitions. [2022-03-03 17:58:57,013 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) [2022-03-03 17:58:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2694 transitions. [2022-03-03 17:58:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:57,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:57,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:57,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-03 17:58:57,015 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1690852358, now seen corresponding path program 215 times [2022-03-03 17:58:57,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:57,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960998049] [2022-03-03 17:58:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:57,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:57,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960998049] [2022-03-03 17:58:57,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960998049] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:57,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:57,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:58:57,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106539938] [2022-03-03 17:58:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:57,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:58:57,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:58:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:58:57,349 INFO L87 Difference]: Start difference. First operand 1083 states and 2694 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) [2022-03-03 17:58:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:59,074 INFO L93 Difference]: Finished difference Result 1302 states and 3223 transitions. [2022-03-03 17:58:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:58:59,074 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 [2022-03-03 17:58:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:59,076 INFO L225 Difference]: With dead ends: 1302 [2022-03-03 17:58:59,076 INFO L226 Difference]: Without dead ends: 1143 [2022-03-03 17:58:59,076 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 [2022-03-03 17:58:59,076 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 338 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:59,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2813 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:58:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-03 17:58:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-03-03 17:58:59,085 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) [2022-03-03 17:58:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-03 17:58:59,086 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-03 17:58:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:59,086 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-03 17:58:59,086 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) [2022-03-03 17:58:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-03 17:58:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:58:59,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:59,093 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] [2022-03-03 17:58:59,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-03 17:58:59,093 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:59,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1810498950, now seen corresponding path program 216 times [2022-03-03 17:58:59,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:59,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879066753] [2022-03-03 17:58:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:59,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:59,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:59,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879066753] [2022-03-03 17:58:59,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879066753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:58:59,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:58:59,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:58:59,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129277847] [2022-03-03 17:58:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:58:59,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:58:59,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:58:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:58:59,446 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) [2022-03-03 17:59:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:01,079 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-03 17:59:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:59:01,079 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 [2022-03-03 17:59:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:01,080 INFO L225 Difference]: With dead ends: 1361 [2022-03-03 17:59:01,081 INFO L226 Difference]: Without dead ends: 1263 [2022-03-03 17:59:01,081 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 [2022-03-03 17:59:01,081 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 332 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:01,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 3246 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:59:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-03 17:59:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-03 17:59:01,090 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) [2022-03-03 17:59:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-03 17:59:01,091 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-03 17:59:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:01,091 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-03 17:59:01,091 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) [2022-03-03 17:59:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-03 17:59:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:01,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:01,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:01,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-03 17:59:01,092 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935454, now seen corresponding path program 217 times [2022-03-03 17:59:01,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:01,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084423439] [2022-03-03 17:59:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:01,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:01,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084423439] [2022-03-03 17:59:01,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084423439] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:01,536 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:01,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:59:01,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045857661] [2022-03-03 17:59:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:59:01,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:59:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:59:01,537 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) [2022-03-03 17:59:03,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:03,221 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-03 17:59:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:59:03,221 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 [2022-03-03 17:59:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:03,222 INFO L225 Difference]: With dead ends: 1317 [2022-03-03 17:59:03,222 INFO L226 Difference]: Without dead ends: 1182 [2022-03-03 17:59:03,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=291, Invalid=3491, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:59:03,223 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 374 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:03,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2965 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:59:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-03 17:59:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-03 17:59:03,231 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) [2022-03-03 17:59:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-03 17:59:03,232 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-03 17:59:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:03,233 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-03 17:59:03,233 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) [2022-03-03 17:59:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-03 17:59:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:03,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:03,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:03,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-03 17:59:03,234 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1996516812, now seen corresponding path program 218 times [2022-03-03 17:59:03,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:03,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818851988] [2022-03-03 17:59:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:03,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:03,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818851988] [2022-03-03 17:59:03,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818851988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:03,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:03,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:03,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050232837] [2022-03-03 17:59:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:03,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:03,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:03,562 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) [2022-03-03 17:59:06,728 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 [] [2022-03-03 17:59:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:07,262 INFO L93 Difference]: Finished difference Result 1333 states and 3290 transitions. [2022-03-03 17:59:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:59:07,262 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 [2022-03-03 17:59:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:07,264 INFO L225 Difference]: With dead ends: 1333 [2022-03-03 17:59:07,264 INFO L226 Difference]: Without dead ends: 1159 [2022-03-03 17:59:07,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:59:07,264 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 359 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:07,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2746 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1042 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 17:59:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-03-03 17:59:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1079. [2022-03-03 17:59:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.481447124304267) internal successors, (2675), 1078 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-03-03 17:59:07,274 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 79 [2022-03-03 17:59:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:07,274 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-03-03 17:59:07,274 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) [2022-03-03 17:59:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-03-03 17:59:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:07,275 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:07,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:07,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-03 17:59:07,275 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1856760466, now seen corresponding path program 219 times [2022-03-03 17:59:07,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:07,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043102641] [2022-03-03 17:59:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:07,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:07,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043102641] [2022-03-03 17:59:07,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043102641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:07,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:07,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:07,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784473674] [2022-03-03 17:59:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:07,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:07,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:07,610 INFO L87 Difference]: Start difference. First operand 1079 states and 2675 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) [2022-03-03 17:59:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:11,390 INFO L93 Difference]: Finished difference Result 1371 states and 3382 transitions. [2022-03-03 17:59:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:59:11,391 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 [2022-03-03 17:59:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:11,392 INFO L225 Difference]: With dead ends: 1371 [2022-03-03 17:59:11,392 INFO L226 Difference]: Without dead ends: 1273 [2022-03-03 17:59:11,392 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 [2022-03-03 17:59:11,393 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 335 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:11,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 3070 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-03 17:59:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-03-03 17:59:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1127. [2022-03-03 17:59:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4857904085257547) internal successors, (2799), 1126 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2799 transitions. [2022-03-03 17:59:11,403 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2799 transitions. Word has length 79 [2022-03-03 17:59:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:11,403 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2799 transitions. [2022-03-03 17:59:11,403 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) [2022-03-03 17:59:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2799 transitions. [2022-03-03 17:59:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:11,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:11,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:11,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-03 17:59:11,404 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -540227574, now seen corresponding path program 220 times [2022-03-03 17:59:11,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:11,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444827070] [2022-03-03 17:59:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:11,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:11,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444827070] [2022-03-03 17:59:11,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444827070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:11,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:11,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:11,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853730958] [2022-03-03 17:59:11,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:11,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:11,742 INFO L87 Difference]: Start difference. First operand 1127 states and 2799 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) [2022-03-03 17:59:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:13,312 INFO L93 Difference]: Finished difference Result 1339 states and 3294 transitions. [2022-03-03 17:59:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:59:13,312 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 [2022-03-03 17:59:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:13,314 INFO L225 Difference]: With dead ends: 1339 [2022-03-03 17:59:13,314 INFO L226 Difference]: Without dead ends: 1204 [2022-03-03 17:59:13,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:59:13,314 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 301 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:13,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3019 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:59:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-03-03 17:59:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1103. [2022-03-03 17:59:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.480036297640653) internal successors, (2733), 1102 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2733 transitions. [2022-03-03 17:59:13,324 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2733 transitions. Word has length 79 [2022-03-03 17:59:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:13,324 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2733 transitions. [2022-03-03 17:59:13,324 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) [2022-03-03 17:59:13,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2733 transitions. [2022-03-03 17:59:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:13,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:13,325 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] [2022-03-03 17:59:13,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-03 17:59:13,325 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1908233138, now seen corresponding path program 221 times [2022-03-03 17:59:13,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:13,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273029766] [2022-03-03 17:59:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:13,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:13,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273029766] [2022-03-03 17:59:13,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273029766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:13,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:13,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:13,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655213882] [2022-03-03 17:59:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:13,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:13,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:13,642 INFO L87 Difference]: Start difference. First operand 1103 states and 2733 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) [2022-03-03 17:59:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:14,816 INFO L93 Difference]: Finished difference Result 1330 states and 3263 transitions. [2022-03-03 17:59:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:59:14,817 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 [2022-03-03 17:59:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:14,818 INFO L225 Difference]: With dead ends: 1330 [2022-03-03 17:59:14,818 INFO L226 Difference]: Without dead ends: 1126 [2022-03-03 17:59:14,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:59:14,819 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 304 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:14,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2813 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-03-03 17:59:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1055. [2022-03-03 17:59:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 2.4753320683111952) internal successors, (2609), 1054 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2609 transitions. [2022-03-03 17:59:14,828 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2609 transitions. Word has length 79 [2022-03-03 17:59:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:14,828 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2609 transitions. [2022-03-03 17:59:14,828 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) [2022-03-03 17:59:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2609 transitions. [2022-03-03 17:59:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:14,829 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:14,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:14,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-03 17:59:14,829 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1583308108, now seen corresponding path program 222 times [2022-03-03 17:59:14,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:14,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891348825] [2022-03-03 17:59:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:15,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:15,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891348825] [2022-03-03 17:59:15,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891348825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:15,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:15,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:15,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934855602] [2022-03-03 17:59:15,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:15,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:15,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:15,150 INFO L87 Difference]: Start difference. First operand 1055 states and 2609 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) [2022-03-03 17:59:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:16,300 INFO L93 Difference]: Finished difference Result 1313 states and 3239 transitions. [2022-03-03 17:59:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:59:16,300 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 [2022-03-03 17:59:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:16,302 INFO L225 Difference]: With dead ends: 1313 [2022-03-03 17:59:16,302 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:59:16,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:59:16,302 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 321 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:16,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2797 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:59:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-03 17:59:16,310 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) [2022-03-03 17:59:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-03 17:59:16,311 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-03 17:59:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:16,312 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-03 17:59:16,312 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) [2022-03-03 17:59:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-03 17:59:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:16,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:16,313 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] [2022-03-03 17:59:16,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-03-03 17:59:16,313 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1023336312, now seen corresponding path program 223 times [2022-03-03 17:59:16,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:16,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636408355] [2022-03-03 17:59:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:16,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:16,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636408355] [2022-03-03 17:59:16,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636408355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:16,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:16,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:16,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205866772] [2022-03-03 17:59:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:16,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:16,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:16,631 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 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) [2022-03-03 17:59:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:17,705 INFO L93 Difference]: Finished difference Result 1257 states and 3106 transitions. [2022-03-03 17:59:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:59:17,705 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 [2022-03-03 17:59:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:17,707 INFO L225 Difference]: With dead ends: 1257 [2022-03-03 17:59:17,707 INFO L226 Difference]: Without dead ends: 1143 [2022-03-03 17:59:17,707 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 [2022-03-03 17:59:17,707 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 [2022-03-03 17:59:17,707 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] [2022-03-03 17:59:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-03 17:59:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1071. [2022-03-03 17:59:17,716 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) [2022-03-03 17:59:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-03-03 17:59:17,717 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-03-03 17:59:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:17,717 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-03-03 17:59:17,717 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) [2022-03-03 17:59:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-03-03 17:59:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:17,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:17,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:17,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-03-03 17:59:17,718 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1390230742, now seen corresponding path program 224 times [2022-03-03 17:59:17,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:17,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390697941] [2022-03-03 17:59:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:18,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:18,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390697941] [2022-03-03 17:59:18,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390697941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:18,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:18,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:18,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387887336] [2022-03-03 17:59:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:18,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:18,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:18,035 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) [2022-03-03 17:59:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:19,150 INFO L93 Difference]: Finished difference Result 1268 states and 3130 transitions. [2022-03-03 17:59:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:59:19,150 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 [2022-03-03 17:59:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:19,151 INFO L225 Difference]: With dead ends: 1268 [2022-03-03 17:59:19,151 INFO L226 Difference]: Without dead ends: 1170 [2022-03-03 17:59:19,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:59:19,152 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 258 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:19,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2714 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-03 17:59:19,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1075. [2022-03-03 17:59:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4804469273743015) internal successors, (2664), 1074 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2664 transitions. [2022-03-03 17:59:19,161 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2664 transitions. Word has length 79 [2022-03-03 17:59:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:19,161 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2664 transitions. [2022-03-03 17:59:19,161 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) [2022-03-03 17:59:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2664 transitions. [2022-03-03 17:59:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:19,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:19,162 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] [2022-03-03 17:59:19,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-03 17:59:19,162 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -675993464, now seen corresponding path program 225 times [2022-03-03 17:59:19,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:19,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949915121] [2022-03-03 17:59:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:19,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:19,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949915121] [2022-03-03 17:59:19,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949915121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:19,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:19,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:19,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537594446] [2022-03-03 17:59:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:19,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:19,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:19,477 INFO L87 Difference]: Start difference. First operand 1075 states and 2664 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) [2022-03-03 17:59:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:20,520 INFO L93 Difference]: Finished difference Result 1236 states and 3046 transitions. [2022-03-03 17:59:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:59:20,520 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 [2022-03-03 17:59:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:20,522 INFO L225 Difference]: With dead ends: 1236 [2022-03-03 17:59:20,522 INFO L226 Difference]: Without dead ends: 1127 [2022-03-03 17:59:20,522 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 [2022-03-03 17:59:20,522 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 287 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:20,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2288 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-03 17:59:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1067. [2022-03-03 17:59:20,530 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) [2022-03-03 17:59:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-03-03 17:59:20,531 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-03-03 17:59:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-03-03 17:59:20,531 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) [2022-03-03 17:59:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-03-03 17:59:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:20,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:20,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:20,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-03 17:59:20,533 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash -205302650, now seen corresponding path program 226 times [2022-03-03 17:59:20,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:20,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867829761] [2022-03-03 17:59:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:20,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:20,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867829761] [2022-03-03 17:59:20,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867829761] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:20,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:20,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:20,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039608150] [2022-03-03 17:59:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:20,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:20,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:20,849 INFO L87 Difference]: Start difference. First operand 1067 states and 2646 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) [2022-03-03 17:59:24,205 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 [] [2022-03-03 17:59:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:24,370 INFO L93 Difference]: Finished difference Result 1351 states and 3302 transitions. [2022-03-03 17:59:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:59:24,370 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 [2022-03-03 17:59:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:24,372 INFO L225 Difference]: With dead ends: 1351 [2022-03-03 17:59:24,372 INFO L226 Difference]: Without dead ends: 1253 [2022-03-03 17:59:24,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:59:24,372 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 344 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:24,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2550 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 17:59:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-03-03 17:59:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1079. [2022-03-03 17:59:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4777365491651206) internal successors, (2671), 1078 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2671 transitions. [2022-03-03 17:59:24,382 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2671 transitions. Word has length 79 [2022-03-03 17:59:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:24,382 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2671 transitions. [2022-03-03 17:59:24,382 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) [2022-03-03 17:59:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2671 transitions. [2022-03-03 17:59:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:24,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:24,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:24,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-03 17:59:24,383 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 508934628, now seen corresponding path program 227 times [2022-03-03 17:59:24,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:24,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584054006] [2022-03-03 17:59:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:24,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:24,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584054006] [2022-03-03 17:59:24,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584054006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:24,706 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:24,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:24,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894671349] [2022-03-03 17:59:24,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:24,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:24,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:24,707 INFO L87 Difference]: Start difference. First operand 1079 states and 2671 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) [2022-03-03 17:59:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:25,826 INFO L93 Difference]: Finished difference Result 1255 states and 3088 transitions. [2022-03-03 17:59:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:59:25,827 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 [2022-03-03 17:59:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:25,828 INFO L225 Difference]: With dead ends: 1255 [2022-03-03 17:59:25,828 INFO L226 Difference]: Without dead ends: 1115 [2022-03-03 17:59:25,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2228, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:59:25,828 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 296 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:25,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2393 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-03 17:59:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-03-03 17:59:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4801512287334595) internal successors, (2624), 1058 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2624 transitions. [2022-03-03 17:59:25,837 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2624 transitions. Word has length 79 [2022-03-03 17:59:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:25,837 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2624 transitions. [2022-03-03 17:59:25,837 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) [2022-03-03 17:59:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2624 transitions. [2022-03-03 17:59:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:25,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:25,839 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] [2022-03-03 17:59:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-03 17:59:25,839 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash 628581220, now seen corresponding path program 228 times [2022-03-03 17:59:25,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:25,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114065483] [2022-03-03 17:59:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:26,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:26,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114065483] [2022-03-03 17:59:26,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114065483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:26,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:26,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:26,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516909870] [2022-03-03 17:59:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:26,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:26,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:26,171 INFO L87 Difference]: Start difference. First operand 1059 states and 2624 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) [2022-03-03 17:59:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:27,849 INFO L93 Difference]: Finished difference Result 1259 states and 3103 transitions. [2022-03-03 17:59:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:59:27,850 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 [2022-03-03 17:59:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:27,851 INFO L225 Difference]: With dead ends: 1259 [2022-03-03 17:59:27,851 INFO L226 Difference]: Without dead ends: 1161 [2022-03-03 17:59:27,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:59:27,851 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 300 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:27,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2685 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:59:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-03-03 17:59:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1075. [2022-03-03 17:59:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4767225325884543) internal successors, (2660), 1074 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2660 transitions. [2022-03-03 17:59:27,861 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2660 transitions. Word has length 79 [2022-03-03 17:59:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:27,861 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2660 transitions. [2022-03-03 17:59:27,861 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) [2022-03-03 17:59:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2660 transitions. [2022-03-03 17:59:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:27,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:27,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:27,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-03 17:59:27,862 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1945114112, now seen corresponding path program 229 times [2022-03-03 17:59:27,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:27,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028647166] [2022-03-03 17:59:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:27,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:28,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:28,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028647166] [2022-03-03 17:59:28,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028647166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:28,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:28,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:28,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617749735] [2022-03-03 17:59:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:28,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:28,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:28,199 INFO L87 Difference]: Start difference. First operand 1075 states and 2660 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) [2022-03-03 17:59:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:29,382 INFO L93 Difference]: Finished difference Result 1227 states and 3015 transitions. [2022-03-03 17:59:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:59:29,382 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 [2022-03-03 17:59:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:29,383 INFO L225 Difference]: With dead ends: 1227 [2022-03-03 17:59:29,383 INFO L226 Difference]: Without dead ends: 1103 [2022-03-03 17:59:29,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:59:29,384 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 298 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:29,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2787 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-03 17:59:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-03 17:59:29,391 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) [2022-03-03 17:59:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2599 transitions. [2022-03-03 17:59:29,393 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2599 transitions. Word has length 79 [2022-03-03 17:59:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:29,393 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2599 transitions. [2022-03-03 17:59:29,393 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) [2022-03-03 17:59:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2599 transitions. [2022-03-03 17:59:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:29,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:29,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:29,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-03 17:59:29,394 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1018020498, now seen corresponding path program 230 times [2022-03-03 17:59:29,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:29,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84994059] [2022-03-03 17:59:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:29,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:29,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:29,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84994059] [2022-03-03 17:59:29,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84994059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:29,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:29,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:29,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107995471] [2022-03-03 17:59:29,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:29,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:29,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:29,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:29,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:29,723 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) [2022-03-03 17:59:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:31,315 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-03-03 17:59:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:59:31,315 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 [2022-03-03 17:59:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:31,316 INFO L225 Difference]: With dead ends: 1327 [2022-03-03 17:59:31,316 INFO L226 Difference]: Without dead ends: 1229 [2022-03-03 17:59:31,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:59:31,317 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 [2022-03-03 17:59:31,317 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] [2022-03-03 17:59:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-03 17:59:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1095. [2022-03-03 17:59:31,325 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) [2022-03-03 17:59:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-03 17:59:31,326 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-03 17:59:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:31,326 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-03 17:59:31,326 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) [2022-03-03 17:59:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-03 17:59:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:31,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:31,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:31,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-03 17:59:31,328 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 298512394, now seen corresponding path program 231 times [2022-03-03 17:59:31,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:31,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133123254] [2022-03-03 17:59:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:31,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:31,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133123254] [2022-03-03 17:59:31,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133123254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:31,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:31,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:31,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042416611] [2022-03-03 17:59:31,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:31,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:31,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:31,763 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) [2022-03-03 17:59:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:33,075 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-03 17:59:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:59:33,075 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 [2022-03-03 17:59:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:33,076 INFO L225 Difference]: With dead ends: 1295 [2022-03-03 17:59:33,077 INFO L226 Difference]: Without dead ends: 1160 [2022-03-03 17:59:33,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:59:33,077 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 287 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:33,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2970 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-03 17:59:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1071. [2022-03-03 17:59:33,085 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) [2022-03-03 17:59:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-03-03 17:59:33,086 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-03-03 17:59:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:33,086 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-03-03 17:59:33,086 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) [2022-03-03 17:59:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-03-03 17:59:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:33,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:33,087 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] [2022-03-03 17:59:33,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-03 17:59:33,088 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1069493170, now seen corresponding path program 232 times [2022-03-03 17:59:33,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:33,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519859998] [2022-03-03 17:59:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:33,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:33,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519859998] [2022-03-03 17:59:33,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519859998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:33,410 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:33,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:33,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566639057] [2022-03-03 17:59:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:33,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:33,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:33,410 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) [2022-03-03 17:59:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:34,550 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-03 17:59:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:59:34,551 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 [2022-03-03 17:59:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:34,552 INFO L225 Difference]: With dead ends: 1271 [2022-03-03 17:59:34,552 INFO L226 Difference]: Without dead ends: 1083 [2022-03-03 17:59:34,552 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 [2022-03-03 17:59:34,552 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 275 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:34,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2899 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-03 17:59:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-03 17:59:34,560 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) [2022-03-03 17:59:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-03 17:59:34,561 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-03 17:59:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:34,561 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-03 17:59:34,561 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) [2022-03-03 17:59:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-03 17:59:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:34,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:34,562 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] [2022-03-03 17:59:34,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-03-03 17:59:34,562 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1680026352, now seen corresponding path program 233 times [2022-03-03 17:59:34,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:34,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34515366] [2022-03-03 17:59:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:34,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:34,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34515366] [2022-03-03 17:59:34,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34515366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:34,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:34,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:59:34,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956329141] [2022-03-03 17:59:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:34,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:59:34,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:59:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:59:34,912 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) [2022-03-03 17:59:37,911 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 [] [2022-03-03 17:59:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:39,486 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-03-03 17:59:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:59:39,487 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 [2022-03-03 17:59:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:39,488 INFO L225 Difference]: With dead ends: 1367 [2022-03-03 17:59:39,488 INFO L226 Difference]: Without dead ends: 1269 [2022-03-03 17:59:39,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=3508, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:59:39,489 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 358 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:39,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 3201 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1209 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-03 17:59:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-03-03 17:59:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1091. [2022-03-03 17:59:39,497 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) [2022-03-03 17:59:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-03 17:59:39,498 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-03 17:59:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:39,498 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-03 17:59:39,498 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) [2022-03-03 17:59:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-03 17:59:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:39,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:39,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:39,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-03-03 17:59:39,500 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:39,500 INFO L85 PathProgramCache]: Analyzing trace with hash -363493460, now seen corresponding path program 234 times [2022-03-03 17:59:39,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:39,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339899794] [2022-03-03 17:59:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:39,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:39,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339899794] [2022-03-03 17:59:39,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339899794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:39,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:39,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:59:39,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056261273] [2022-03-03 17:59:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:39,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:59:39,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:59:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:59:39,855 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) [2022-03-03 17:59:41,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:41,400 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-03-03 17:59:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:59:41,400 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 [2022-03-03 17:59:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:41,402 INFO L225 Difference]: With dead ends: 1323 [2022-03-03 17:59:41,402 INFO L226 Difference]: Without dead ends: 1188 [2022-03-03 17:59:41,402 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 [2022-03-03 17:59:41,402 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 359 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:41,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3033 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:59:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-03-03 17:59:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1067. [2022-03-03 17:59:41,411 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) [2022-03-03 17:59:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-03-03 17:59:41,412 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-03-03 17:59:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:41,412 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-03-03 17:59:41,412 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) [2022-03-03 17:59:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-03-03 17:59:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:41,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:41,413 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] [2022-03-03 17:59:41,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-03 17:59:41,413 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1731499024, now seen corresponding path program 235 times [2022-03-03 17:59:41,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:41,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053309201] [2022-03-03 17:59:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:41,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:41,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:41,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053309201] [2022-03-03 17:59:41,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053309201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:41,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:41,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:41,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519212225] [2022-03-03 17:59:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:41,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:41,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:41,751 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) [2022-03-03 17:59:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:42,998 INFO L93 Difference]: Finished difference Result 1287 states and 3163 transitions. [2022-03-03 17:59:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:59:42,998 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 [2022-03-03 17:59:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:42,999 INFO L225 Difference]: With dead ends: 1287 [2022-03-03 17:59:43,000 INFO L226 Difference]: Without dead ends: 1107 [2022-03-03 17:59:43,000 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 [2022-03-03 17:59:43,000 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 316 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:43,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2813 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-03 17:59:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1043. [2022-03-03 17:59:43,008 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) [2022-03-03 17:59:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2584 transitions. [2022-03-03 17:59:43,009 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2584 transitions. Word has length 79 [2022-03-03 17:59:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:43,009 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2584 transitions. [2022-03-03 17:59:43,009 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) [2022-03-03 17:59:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2584 transitions. [2022-03-03 17:59:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:43,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:43,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:43,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-03 17:59:43,011 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash 253993096, now seen corresponding path program 236 times [2022-03-03 17:59:43,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:43,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735304960] [2022-03-03 17:59:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:43,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:43,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735304960] [2022-03-03 17:59:43,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735304960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:43,337 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:43,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:43,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745014535] [2022-03-03 17:59:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:43,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:43,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:43,338 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) [2022-03-03 17:59:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:44,383 INFO L93 Difference]: Finished difference Result 1302 states and 3198 transitions. [2022-03-03 17:59:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:59:44,384 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 [2022-03-03 17:59:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:44,385 INFO L225 Difference]: With dead ends: 1302 [2022-03-03 17:59:44,385 INFO L226 Difference]: Without dead ends: 1071 [2022-03-03 17:59:44,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:59:44,385 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 316 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:44,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2593 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-03 17:59:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1027. [2022-03-03 17:59:44,393 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) [2022-03-03 17:59:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-03 17:59:44,394 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-03 17:59:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:44,395 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-03 17:59:44,395 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) [2022-03-03 17:59:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-03 17:59:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:44,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:44,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:44,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-03 17:59:44,396 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1441862078, now seen corresponding path program 237 times [2022-03-03 17:59:44,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:44,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825655339] [2022-03-03 17:59:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:44,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:44,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:44,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825655339] [2022-03-03 17:59:44,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825655339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:44,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:44,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:44,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592293300] [2022-03-03 17:59:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:44,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:44,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:44,746 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) [2022-03-03 17:59:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:46,655 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-03-03 17:59:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:59:46,656 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 [2022-03-03 17:59:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:46,657 INFO L225 Difference]: With dead ends: 1343 [2022-03-03 17:59:46,657 INFO L226 Difference]: Without dead ends: 1245 [2022-03-03 17:59:46,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:59:46,658 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 339 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:46,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2662 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 17:59:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-03 17:59:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-03-03 17:59:46,667 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) [2022-03-03 17:59:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 17:59:46,668 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 17:59:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:46,668 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 17:59:46,668 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) [2022-03-03 17:59:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 17:59:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:46,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:46,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:46,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-03 17:59:46,669 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -125329186, now seen corresponding path program 238 times [2022-03-03 17:59:46,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:46,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044305485] [2022-03-03 17:59:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:47,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:47,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044305485] [2022-03-03 17:59:47,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044305485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:47,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:47,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:59:47,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246086016] [2022-03-03 17:59:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:47,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:59:47,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:47,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:59:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:59:47,007 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) [2022-03-03 17:59:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:48,395 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-03 17:59:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:59:48,395 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 [2022-03-03 17:59:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:48,397 INFO L225 Difference]: With dead ends: 1299 [2022-03-03 17:59:48,397 INFO L226 Difference]: Without dead ends: 1164 [2022-03-03 17:59:48,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:59:48,397 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 309 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:48,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2777 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:59:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-03 17:59:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-03-03 17:59:48,406 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) [2022-03-03 17:59:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-03 17:59:48,407 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-03 17:59:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:48,407 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-03 17:59:48,407 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) [2022-03-03 17:59:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-03 17:59:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:48,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:48,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:48,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-03 17:59:48,408 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:48,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334750, now seen corresponding path program 239 times [2022-03-03 17:59:48,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:48,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856786603] [2022-03-03 17:59:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:48,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:48,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:48,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856786603] [2022-03-03 17:59:48,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856786603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:48,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:48,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:48,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526539457] [2022-03-03 17:59:48,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:48,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:48,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:48,731 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) [2022-03-03 17:59:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:49,835 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-03-03 17:59:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:59:49,835 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 [2022-03-03 17:59:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:49,837 INFO L225 Difference]: With dead ends: 1263 [2022-03-03 17:59:49,837 INFO L226 Difference]: Without dead ends: 1083 [2022-03-03 17:59:49,837 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 [2022-03-03 17:59:49,837 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 312 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:49,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2432 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-03 17:59:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-03 17:59:49,845 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) [2022-03-03 17:59:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-03 17:59:49,846 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-03 17:59:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:49,846 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-03 17:59:49,846 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) [2022-03-03 17:59:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-03 17:59:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:49,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:49,847 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] [2022-03-03 17:59:49,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-03 17:59:49,847 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 492157370, now seen corresponding path program 240 times [2022-03-03 17:59:49,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:49,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020752604] [2022-03-03 17:59:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:50,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:50,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020752604] [2022-03-03 17:59:50,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020752604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:50,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:50,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:50,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506053260] [2022-03-03 17:59:50,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:50,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:50,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:50,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:50,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:50,160 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) [2022-03-03 17:59:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:51,055 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-03 17:59:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:59:51,055 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 [2022-03-03 17:59:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:51,057 INFO L225 Difference]: With dead ends: 1286 [2022-03-03 17:59:51,057 INFO L226 Difference]: Without dead ends: 1067 [2022-03-03 17:59:51,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1719, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:59:51,057 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 295 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:51,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2302 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-03 17:59:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-03 17:59:51,065 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) [2022-03-03 17:59:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-03 17:59:51,066 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-03 17:59:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:51,066 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-03 17:59:51,066 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) [2022-03-03 17:59:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-03 17:59:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:51,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:51,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:51,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-03 17:59:51,067 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1847743028, now seen corresponding path program 241 times [2022-03-03 17:59:51,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:51,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754827036] [2022-03-03 17:59:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:51,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:51,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754827036] [2022-03-03 17:59:51,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754827036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:51,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:51,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:51,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439196208] [2022-03-03 17:59:51,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:51,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:51,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:51,379 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) [2022-03-03 17:59:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:52,299 INFO L93 Difference]: Finished difference Result 1312 states and 3213 transitions. [2022-03-03 17:59:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:59:52,299 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 [2022-03-03 17:59:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:52,300 INFO L225 Difference]: With dead ends: 1312 [2022-03-03 17:59:52,300 INFO L226 Difference]: Without dead ends: 1027 [2022-03-03 17:59:52,300 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 [2022-03-03 17:59:52,301 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 304 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:52,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2542 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-03 17:59:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2022-03-03 17:59:52,308 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) [2022-03-03 17:59:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2486 transitions. [2022-03-03 17:59:52,309 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2486 transitions. Word has length 79 [2022-03-03 17:59:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:52,309 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 2486 transitions. [2022-03-03 17:59:52,309 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) [2022-03-03 17:59:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2486 transitions. [2022-03-03 17:59:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:52,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:52,311 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] [2022-03-03 17:59:52,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-03 17:59:52,311 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash -566943232, now seen corresponding path program 242 times [2022-03-03 17:59:52,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:52,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118690871] [2022-03-03 17:59:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:52,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:52,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118690871] [2022-03-03 17:59:52,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118690871] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:52,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:52,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:52,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265871194] [2022-03-03 17:59:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:52,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:52,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:52,617 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) [2022-03-03 17:59:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:53,488 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-03-03 17:59:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:59:53,488 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 [2022-03-03 17:59:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:53,490 INFO L225 Difference]: With dead ends: 1269 [2022-03-03 17:59:53,490 INFO L226 Difference]: Without dead ends: 1139 [2022-03-03 17:59:53,490 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 [2022-03-03 17:59:53,490 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 224 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:53,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 2333 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-03 17:59:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-03-03 17:59:53,507 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) [2022-03-03 17:59:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-03 17:59:53,508 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-03 17:59:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:53,508 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-03 17:59:53,508 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) [2022-03-03 17:59:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-03 17:59:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:53,509 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:53,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:53,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-03 17:59:53,510 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1420334398, now seen corresponding path program 243 times [2022-03-03 17:59:53,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:53,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124032056] [2022-03-03 17:59:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:53,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:53,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124032056] [2022-03-03 17:59:53,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124032056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:53,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:53,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:53,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471575818] [2022-03-03 17:59:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:53,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:53,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:53,817 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) [2022-03-03 17:59:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:54,687 INFO L93 Difference]: Finished difference Result 1264 states and 3127 transitions. [2022-03-03 17:59:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:59:54,687 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 [2022-03-03 17:59:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:54,689 INFO L225 Difference]: With dead ends: 1264 [2022-03-03 17:59:54,689 INFO L226 Difference]: Without dead ends: 1166 [2022-03-03 17:59:54,689 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 [2022-03-03 17:59:54,689 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 269 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:54,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2293 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-03 17:59:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1087. [2022-03-03 17:59:54,697 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) [2022-03-03 17:59:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-03 17:59:54,699 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-03 17:59:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:54,699 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-03 17:59:54,699 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) [2022-03-03 17:59:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-03 17:59:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:54,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:54,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:54,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-03 17:59:54,700 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -706097120, now seen corresponding path program 244 times [2022-03-03 17:59:54,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:54,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142822518] [2022-03-03 17:59:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:55,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:55,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142822518] [2022-03-03 17:59:55,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142822518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:55,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:55,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:55,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385536887] [2022-03-03 17:59:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:55,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:55,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:55,012 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) [2022-03-03 17:59:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:55,852 INFO L93 Difference]: Finished difference Result 1232 states and 3043 transitions. [2022-03-03 17:59:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:59:55,852 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 [2022-03-03 17:59:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:55,853 INFO L225 Difference]: With dead ends: 1232 [2022-03-03 17:59:55,853 INFO L226 Difference]: Without dead ends: 1119 [2022-03-03 17:59:55,854 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 [2022-03-03 17:59:55,854 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 279 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:55,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2110 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-03 17:59:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1075. [2022-03-03 17:59:55,862 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) [2022-03-03 17:59:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-03 17:59:55,863 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-03 17:59:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-03 17:59:55,864 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) [2022-03-03 17:59:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-03 17:59:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:55,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:55,865 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] [2022-03-03 17:59:55,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-03 17:59:55,865 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash -147138528, now seen corresponding path program 245 times [2022-03-03 17:59:55,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:55,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782014285] [2022-03-03 17:59:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:56,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:56,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782014285] [2022-03-03 17:59:56,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782014285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:56,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:56,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:56,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220919073] [2022-03-03 17:59:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:56,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:56,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:56,176 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) [2022-03-03 17:59:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:57,111 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-03 17:59:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:59:57,111 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 [2022-03-03 17:59:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:57,113 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 17:59:57,113 INFO L226 Difference]: Without dead ends: 1184 [2022-03-03 17:59:57,113 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 [2022-03-03 17:59:57,113 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 237 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:57,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2326 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-03 17:59:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1099. [2022-03-03 17:59:57,122 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) [2022-03-03 17:59:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 17:59:57,123 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 17:59:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 17:59:57,123 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) [2022-03-03 17:59:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 17:59:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:57,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:57,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:57,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-03-03 17:59:57,124 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1169394364, now seen corresponding path program 246 times [2022-03-03 17:59:57,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:57,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638551980] [2022-03-03 17:59:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:57,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:57,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638551980] [2022-03-03 17:59:57,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638551980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:57,427 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:57,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:59:57,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10067191] [2022-03-03 17:59:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:57,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:59:57,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:59:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:59:57,428 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) [2022-03-03 17:59:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:58,348 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-03-03 17:59:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:59:58,348 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 [2022-03-03 17:59:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:58,349 INFO L225 Difference]: With dead ends: 1250 [2022-03-03 17:59:58,350 INFO L226 Difference]: Without dead ends: 1099 [2022-03-03 17:59:58,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:59:58,350 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 236 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:58,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2548 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-03-03 17:59:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1059. [2022-03-03 17:59:58,358 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) [2022-03-03 17:59:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-03 17:59:58,359 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-03 17:59:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:58,359 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-03 17:59:58,359 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) [2022-03-03 17:59:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-03 17:59:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:59:58,360 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:58,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:58,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-03 17:59:58,361 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:58,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2023485472, now seen corresponding path program 247 times [2022-03-03 17:59:58,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:58,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9993688] [2022-03-03 17:59:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:58,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:58,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9993688] [2022-03-03 17:59:58,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9993688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:59:58,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:59:58,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:59:58,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340055110] [2022-03-03 17:59:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:59:58,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:59:58,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:59:58,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:59:58,681 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) [2022-03-03 18:00:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:00,027 INFO L93 Difference]: Finished difference Result 1317 states and 3254 transitions. [2022-03-03 18:00:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:00:00,027 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 [2022-03-03 18:00:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:00,028 INFO L225 Difference]: With dead ends: 1317 [2022-03-03 18:00:00,028 INFO L226 Difference]: Without dead ends: 1219 [2022-03-03 18:00:00,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:00:00,029 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:00,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2459 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:00:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-03 18:00:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1087. [2022-03-03 18:00:00,037 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) [2022-03-03 18:00:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 18:00:00,038 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 18:00:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 18:00:00,038 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) [2022-03-03 18:00:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 18:00:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:00,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:00,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:00,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-03 18:00:00,039 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -954948932, now seen corresponding path program 248 times [2022-03-03 18:00:00,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:00,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948065283] [2022-03-03 18:00:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:00,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:00,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948065283] [2022-03-03 18:00:00,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948065283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:00,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:00,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:00,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886034815] [2022-03-03 18:00:00,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:00,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:00,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:00,363 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) [2022-03-03 18:00:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:01,428 INFO L93 Difference]: Finished difference Result 1273 states and 3137 transitions. [2022-03-03 18:00:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:00:01,429 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 [2022-03-03 18:00:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:01,430 INFO L225 Difference]: With dead ends: 1273 [2022-03-03 18:00:01,430 INFO L226 Difference]: Without dead ends: 1138 [2022-03-03 18:00:01,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:00:01,430 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 302 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:01,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2450 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-03-03 18:00:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1063. [2022-03-03 18:00:01,439 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) [2022-03-03 18:00:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-03 18:00:01,440 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-03 18:00:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:01,440 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-03 18:00:01,440 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) [2022-03-03 18:00:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-03 18:00:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:01,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:01,441 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] [2022-03-03 18:00:01,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-03 18:00:01,441 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2085463962, now seen corresponding path program 249 times [2022-03-03 18:00:01,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:01,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109529862] [2022-03-03 18:00:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:01,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:01,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109529862] [2022-03-03 18:00:01,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109529862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:01,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:01,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:00:01,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576424342] [2022-03-03 18:00:01,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:01,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:00:01,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:00:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:00:01,749 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) [2022-03-03 18:00:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:02,664 INFO L93 Difference]: Finished difference Result 1261 states and 3104 transitions. [2022-03-03 18:00:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:00:02,664 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 [2022-03-03 18:00:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:02,665 INFO L225 Difference]: With dead ends: 1261 [2022-03-03 18:00:02,665 INFO L226 Difference]: Without dead ends: 1091 [2022-03-03 18:00:02,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 18:00:02,666 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 272 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:02,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2518 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-03 18:00:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-03 18:00:02,673 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) [2022-03-03 18:00:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-03 18:00:02,674 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-03 18:00:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:02,675 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-03 18:00:02,675 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) [2022-03-03 18:00:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-03 18:00:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:02,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:02,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:02,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-03 18:00:02,676 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2088188610, now seen corresponding path program 250 times [2022-03-03 18:00:02,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:02,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822421809] [2022-03-03 18:00:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:02,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:02,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:02,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822421809] [2022-03-03 18:00:02,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822421809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:02,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:02,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:02,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456683272] [2022-03-03 18:00:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:02,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:02,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:02,998 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) [2022-03-03 18:00:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:04,573 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-03-03 18:00:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:00:04,573 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 [2022-03-03 18:00:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:04,575 INFO L225 Difference]: With dead ends: 1315 [2022-03-03 18:00:04,575 INFO L226 Difference]: Without dead ends: 1217 [2022-03-03 18:00:04,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:00:04,575 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 287 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:04,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2635 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:00:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-03 18:00:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1099. [2022-03-03 18:00:04,591 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) [2022-03-03 18:00:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-03 18:00:04,592 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-03 18:00:04,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:04,592 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-03 18:00:04,592 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) [2022-03-03 18:00:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-03 18:00:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:04,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:04,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:04,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-03 18:00:04,593 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash -890245794, now seen corresponding path program 251 times [2022-03-03 18:00:04,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:04,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173292934] [2022-03-03 18:00:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:04,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:04,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173292934] [2022-03-03 18:00:04,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173292934] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:04,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:04,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:04,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521197830] [2022-03-03 18:00:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:04,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:04,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:04,914 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) [2022-03-03 18:00:07,202 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 [] [2022-03-03 18:00:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:07,586 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-03 18:00:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:00:07,586 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 [2022-03-03 18:00:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:07,588 INFO L225 Difference]: With dead ends: 1283 [2022-03-03 18:00:07,588 INFO L226 Difference]: Without dead ends: 1148 [2022-03-03 18:00:07,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:00:07,588 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 285 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:07,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2741 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 18:00:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-03 18:00:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1075. [2022-03-03 18:00:07,597 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) [2022-03-03 18:00:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 18:00:07,598 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 18:00:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:07,598 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 18:00:07,598 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) [2022-03-03 18:00:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 18:00:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:07,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:07,599 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] [2022-03-03 18:00:07,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-03 18:00:07,600 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2036715938, now seen corresponding path program 252 times [2022-03-03 18:00:07,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:07,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617154465] [2022-03-03 18:00:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:07,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:07,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617154465] [2022-03-03 18:00:07,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617154465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:07,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:07,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:00:07,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145012267] [2022-03-03 18:00:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:07,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:00:07,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:07,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:00:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:00:07,912 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) [2022-03-03 18:00:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:08,879 INFO L93 Difference]: Finished difference Result 1259 states and 3086 transitions. [2022-03-03 18:00:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:00:08,879 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 [2022-03-03 18:00:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:08,881 INFO L225 Difference]: With dead ends: 1259 [2022-03-03 18:00:08,881 INFO L226 Difference]: Without dead ends: 1063 [2022-03-03 18:00:08,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 18:00:08,881 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 270 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:08,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2254 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-03-03 18:00:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1035. [2022-03-03 18:00:08,891 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) [2022-03-03 18:00:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-03 18:00:08,892 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-03 18:00:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:08,892 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-03 18:00:08,892 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) [2022-03-03 18:00:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-03 18:00:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:08,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:08,893 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] [2022-03-03 18:00:08,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-03 18:00:08,893 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:08,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2112785090, now seen corresponding path program 253 times [2022-03-03 18:00:08,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:08,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8671399] [2022-03-03 18:00:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:09,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:09,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8671399] [2022-03-03 18:00:09,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8671399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:09,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:09,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:09,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007045085] [2022-03-03 18:00:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:09,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:09,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:09,265 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) [2022-03-03 18:00:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:11,890 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-03 18:00:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:00:11,891 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 [2022-03-03 18:00:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:11,892 INFO L225 Difference]: With dead ends: 1347 [2022-03-03 18:00:11,892 INFO L226 Difference]: Without dead ends: 1249 [2022-03-03 18:00:11,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:00:11,893 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 322 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:11,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2654 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-03 18:00:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-03-03 18:00:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-03-03 18:00:11,902 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) [2022-03-03 18:00:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 18:00:11,903 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 18:00:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:11,903 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 18:00:11,903 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) [2022-03-03 18:00:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 18:00:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:11,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:11,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:11,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-03 18:00:11,905 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash -865649314, now seen corresponding path program 254 times [2022-03-03 18:00:11,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:11,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232148089] [2022-03-03 18:00:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:12,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:12,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232148089] [2022-03-03 18:00:12,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232148089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:12,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:12,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:12,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621088830] [2022-03-03 18:00:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:12,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:12,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:12,250 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) [2022-03-03 18:00:13,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:13,586 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-03 18:00:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:00:13,587 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 [2022-03-03 18:00:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:13,588 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 18:00:13,588 INFO L226 Difference]: Without dead ends: 1168 [2022-03-03 18:00:13,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:00:13,589 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 292 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:13,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2900 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:00:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-03 18:00:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-03 18:00:13,598 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) [2022-03-03 18:00:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-03 18:00:13,599 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-03 18:00:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:13,599 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-03 18:00:13,599 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) [2022-03-03 18:00:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-03 18:00:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:13,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:13,600 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] [2022-03-03 18:00:13,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-03-03 18:00:13,600 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2061312418, now seen corresponding path program 255 times [2022-03-03 18:00:13,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:13,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014403112] [2022-03-03 18:00:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:13,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:13,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014403112] [2022-03-03 18:00:13,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014403112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:13,943 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:13,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:13,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524310999] [2022-03-03 18:00:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:13,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:13,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:13,943 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) [2022-03-03 18:00:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:15,001 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-03 18:00:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:00:15,002 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 [2022-03-03 18:00:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:15,003 INFO L225 Difference]: With dead ends: 1267 [2022-03-03 18:00:15,003 INFO L226 Difference]: Without dead ends: 1087 [2022-03-03 18:00:15,004 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 [2022-03-03 18:00:15,004 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 281 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:15,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2426 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-03 18:00:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-03 18:00:15,012 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) [2022-03-03 18:00:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-03 18:00:15,014 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-03 18:00:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:15,014 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-03 18:00:15,014 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) [2022-03-03 18:00:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-03 18:00:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:15,015 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:15,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:15,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-03-03 18:00:15,016 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -248162758, now seen corresponding path program 256 times [2022-03-03 18:00:15,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:15,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075263270] [2022-03-03 18:00:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:15,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:15,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:15,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075263270] [2022-03-03 18:00:15,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075263270] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:15,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:15,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:00:15,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365380619] [2022-03-03 18:00:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:15,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:00:15,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:00:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:00:15,356 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) [2022-03-03 18:00:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:16,219 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-03 18:00:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:00:16,233 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 [2022-03-03 18:00:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:16,237 INFO L225 Difference]: With dead ends: 1282 [2022-03-03 18:00:16,237 INFO L226 Difference]: Without dead ends: 1055 [2022-03-03 18:00:16,239 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 [2022-03-03 18:00:16,239 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:16,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2495 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-03-03 18:00:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1027. [2022-03-03 18:00:16,249 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) [2022-03-03 18:00:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-03 18:00:16,250 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-03 18:00:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-03 18:00:16,251 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) [2022-03-03 18:00:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-03 18:00:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:16,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:16,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:16,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-03-03 18:00:16,252 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash 216748064, now seen corresponding path program 257 times [2022-03-03 18:00:16,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:16,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643847975] [2022-03-03 18:00:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:16,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:16,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:16,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643847975] [2022-03-03 18:00:16,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643847975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:16,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:16,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:16,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660958238] [2022-03-03 18:00:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:16,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:16,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:16,696 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) [2022-03-03 18:00:19,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:00:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:19,889 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-03-03 18:00:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:00:19,890 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 [2022-03-03 18:00:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:19,892 INFO L225 Difference]: With dead ends: 1343 [2022-03-03 18:00:19,892 INFO L226 Difference]: Without dead ends: 1245 [2022-03-03 18:00:19,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=2937, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:00:19,893 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 311 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:19,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2643 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-03 18:00:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-03 18:00:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-03-03 18:00:19,902 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) [2022-03-03 18:00:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-03 18:00:19,904 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-03 18:00:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:19,904 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-03 18:00:19,904 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) [2022-03-03 18:00:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-03 18:00:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:19,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:19,905 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] [2022-03-03 18:00:19,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-03 18:00:19,905 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1533280956, now seen corresponding path program 258 times [2022-03-03 18:00:19,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:19,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063414446] [2022-03-03 18:00:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:20,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:20,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063414446] [2022-03-03 18:00:20,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063414446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:20,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:20,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:20,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509191827] [2022-03-03 18:00:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:20,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:20,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:20,283 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) [2022-03-03 18:00:23,465 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 [] [2022-03-03 18:00:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:23,797 INFO L93 Difference]: Finished difference Result 1311 states and 3225 transitions. [2022-03-03 18:00:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:00:23,797 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 [2022-03-03 18:00:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:23,799 INFO L225 Difference]: With dead ends: 1311 [2022-03-03 18:00:23,799 INFO L226 Difference]: Without dead ends: 1176 [2022-03-03 18:00:23,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:00:23,800 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 313 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:23,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2630 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 995 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:00:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-03-03 18:00:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-03-03 18:00:23,808 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) [2022-03-03 18:00:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 18:00:23,809 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 18:00:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:23,809 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 18:00:23,810 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) [2022-03-03 18:00:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 18:00:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:23,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:23,811 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] [2022-03-03 18:00:23,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-03 18:00:23,811 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:23,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1005061540, now seen corresponding path program 259 times [2022-03-03 18:00:23,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:23,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734524724] [2022-03-03 18:00:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:24,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:24,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734524724] [2022-03-03 18:00:24,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734524724] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:24,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:24,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:24,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509312420] [2022-03-03 18:00:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:24,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:24,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:24,145 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) [2022-03-03 18:00:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:25,223 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-03 18:00:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:00:25,223 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 [2022-03-03 18:00:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:25,225 INFO L225 Difference]: With dead ends: 1275 [2022-03-03 18:00:25,225 INFO L226 Difference]: Without dead ends: 1083 [2022-03-03 18:00:25,225 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 [2022-03-03 18:00:25,225 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 298 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:25,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2418 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-03 18:00:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-03 18:00:25,234 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) [2022-03-03 18:00:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-03 18:00:25,235 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-03 18:00:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:25,235 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-03 18:00:25,235 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) [2022-03-03 18:00:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-03 18:00:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:25,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:25,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:25,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-03 18:00:25,236 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2144199784, now seen corresponding path program 260 times [2022-03-03 18:00:25,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:25,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261780697] [2022-03-03 18:00:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:25,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:25,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261780697] [2022-03-03 18:00:25,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261780697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:25,553 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:25,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:00:25,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918926457] [2022-03-03 18:00:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:00:25,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:00:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:00:25,553 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) [2022-03-03 18:00:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:26,464 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-03 18:00:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 18:00:26,465 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 [2022-03-03 18:00:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:26,466 INFO L225 Difference]: With dead ends: 1286 [2022-03-03 18:00:26,466 INFO L226 Difference]: Without dead ends: 1067 [2022-03-03 18:00:26,466 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 [2022-03-03 18:00:26,467 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:26,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2558 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-03 18:00:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-03 18:00:26,475 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) [2022-03-03 18:00:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-03 18:00:26,476 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-03 18:00:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:26,476 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-03 18:00:26,476 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) [2022-03-03 18:00:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-03 18:00:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:26,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:26,477 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] [2022-03-03 18:00:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-03 18:00:26,477 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -189132886, now seen corresponding path program 261 times [2022-03-03 18:00:26,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:26,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300224366] [2022-03-03 18:00:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:26,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:26,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300224366] [2022-03-03 18:00:26,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300224366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:26,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:26,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:00:26,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908278804] [2022-03-03 18:00:26,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:26,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:00:26,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:00:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:00:26,848 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) [2022-03-03 18:00:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:27,760 INFO L93 Difference]: Finished difference Result 1304 states and 3191 transitions. [2022-03-03 18:00:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:00:27,760 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 [2022-03-03 18:00:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:27,762 INFO L225 Difference]: With dead ends: 1304 [2022-03-03 18:00:27,762 INFO L226 Difference]: Without dead ends: 1027 [2022-03-03 18:00:27,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 18:00:27,762 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 302 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:27,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2632 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-03 18:00:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1011. [2022-03-03 18:00:27,770 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) [2022-03-03 18:00:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2500 transitions. [2022-03-03 18:00:27,771 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2500 transitions. Word has length 79 [2022-03-03 18:00:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:27,771 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 2500 transitions. [2022-03-03 18:00:27,771 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) [2022-03-03 18:00:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2500 transitions. [2022-03-03 18:00:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:27,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:27,772 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] [2022-03-03 18:00:27,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-03 18:00:27,772 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2043254816, now seen corresponding path program 262 times [2022-03-03 18:00:27,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:27,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629788484] [2022-03-03 18:00:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:27,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:28,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:28,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629788484] [2022-03-03 18:00:28,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629788484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:28,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:28,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:00:28,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877359858] [2022-03-03 18:00:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:28,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:00:28,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:00:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:00:28,128 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) [2022-03-03 18:00:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:30,633 INFO L93 Difference]: Finished difference Result 1319 states and 3247 transitions. [2022-03-03 18:00:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:00:30,633 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 [2022-03-03 18:00:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:30,635 INFO L225 Difference]: With dead ends: 1319 [2022-03-03 18:00:30,635 INFO L226 Difference]: Without dead ends: 1221 [2022-03-03 18:00:30,635 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 [2022-03-03 18:00:30,635 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 314 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:30,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 3048 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 18:00:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-03-03 18:00:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1075. [2022-03-03 18:00:30,645 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) [2022-03-03 18:00:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-03 18:00:30,646 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-03 18:00:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:30,646 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-03 18:00:30,646 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) [2022-03-03 18:00:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-03 18:00:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:30,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:30,647 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] [2022-03-03 18:00:30,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-03 18:00:30,647 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash -935179588, now seen corresponding path program 263 times [2022-03-03 18:00:30,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:30,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287511393] [2022-03-03 18:00:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:31,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:31,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287511393] [2022-03-03 18:00:31,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287511393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:31,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:31,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:00:31,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915478633] [2022-03-03 18:00:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:00:31,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:00:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:00:31,005 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) [2022-03-03 18:00:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:32,405 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-03 18:00:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:00:32,406 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 [2022-03-03 18:00:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:32,407 INFO L225 Difference]: With dead ends: 1275 [2022-03-03 18:00:32,407 INFO L226 Difference]: Without dead ends: 1140 [2022-03-03 18:00:32,408 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 [2022-03-03 18:00:32,408 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 301 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:32,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3021 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:00:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-03-03 18:00:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1051. [2022-03-03 18:00:32,416 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) [2022-03-03 18:00:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2602 transitions. [2022-03-03 18:00:32,417 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2602 transitions. Word has length 79 [2022-03-03 18:00:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:32,417 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2602 transitions. [2022-03-03 18:00:32,417 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) [2022-03-03 18:00:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2602 transitions. [2022-03-03 18:00:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:32,418 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:32,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:32,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-03 18:00:32,418 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:32,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1991782144, now seen corresponding path program 264 times [2022-03-03 18:00:32,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:32,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780585127] [2022-03-03 18:00:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:32,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:32,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780585127] [2022-03-03 18:00:32,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780585127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:32,856 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:32,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:32,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213161752] [2022-03-03 18:00:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:32,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:32,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:32,857 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) [2022-03-03 18:00:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:34,029 INFO L93 Difference]: Finished difference Result 1239 states and 3031 transitions. [2022-03-03 18:00:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:00:34,030 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 [2022-03-03 18:00:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:34,031 INFO L225 Difference]: With dead ends: 1239 [2022-03-03 18:00:34,031 INFO L226 Difference]: Without dead ends: 1059 [2022-03-03 18:00:34,031 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 [2022-03-03 18:00:34,031 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 289 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:34,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2818 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:00:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-03-03 18:00:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1027. [2022-03-03 18:00:34,039 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) [2022-03-03 18:00:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2540 transitions. [2022-03-03 18:00:34,040 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2540 transitions. Word has length 79 [2022-03-03 18:00:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:34,040 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2540 transitions. [2022-03-03 18:00:34,041 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) [2022-03-03 18:00:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2540 transitions. [2022-03-03 18:00:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:34,042 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:34,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:34,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-03 18:00:34,042 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -317693032, now seen corresponding path program 265 times [2022-03-03 18:00:34,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:34,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959541624] [2022-03-03 18:00:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:34,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:34,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:34,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959541624] [2022-03-03 18:00:34,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959541624] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:34,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:34,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:34,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739671519] [2022-03-03 18:00:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:34,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:34,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:34,369 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) [2022-03-03 18:00:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:35,270 INFO L93 Difference]: Finished difference Result 1262 states and 3088 transitions. [2022-03-03 18:00:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:00:35,271 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 [2022-03-03 18:00:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:35,272 INFO L225 Difference]: With dead ends: 1262 [2022-03-03 18:00:35,272 INFO L226 Difference]: Without dead ends: 1043 [2022-03-03 18:00:35,272 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 [2022-03-03 18:00:35,272 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 299 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:35,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2555 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:00:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-03 18:00:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-03-03 18:00:35,280 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) [2022-03-03 18:00:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2529 transitions. [2022-03-03 18:00:35,281 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2529 transitions. Word has length 79 [2022-03-03 18:00:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:35,281 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2529 transitions. [2022-03-03 18:00:35,281 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) [2022-03-03 18:00:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2529 transitions. [2022-03-03 18:00:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:35,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:35,282 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] [2022-03-03 18:00:35,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-03-03 18:00:35,283 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1637373866, now seen corresponding path program 266 times [2022-03-03 18:00:35,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:35,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987477294] [2022-03-03 18:00:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:35,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:35,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987477294] [2022-03-03 18:00:35,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987477294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:35,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:35,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:35,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114775142] [2022-03-03 18:00:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:35,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:35,639 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) [2022-03-03 18:00:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:36,566 INFO L93 Difference]: Finished difference Result 1292 states and 3158 transitions. [2022-03-03 18:00:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 18:00:36,566 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 [2022-03-03 18:00:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:36,567 INFO L225 Difference]: With dead ends: 1292 [2022-03-03 18:00:36,567 INFO L226 Difference]: Without dead ends: 1031 [2022-03-03 18:00:36,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:00:36,568 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 313 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2469 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 [2022-03-03 18:00:36,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2469 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-03-03 18:00:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1015. [2022-03-03 18:00:36,575 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) [2022-03-03 18:00:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2507 transitions. [2022-03-03 18:00:36,576 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2507 transitions. Word has length 79 [2022-03-03 18:00:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:36,577 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2507 transitions. [2022-03-03 18:00:36,577 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) [2022-03-03 18:00:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2507 transitions. [2022-03-03 18:00:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:36,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:36,578 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] [2022-03-03 18:00:36,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-03 18:00:36,578 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:36,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash -264299060, now seen corresponding path program 267 times [2022-03-03 18:00:36,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:36,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547418735] [2022-03-03 18:00:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:36,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:36,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547418735] [2022-03-03 18:00:36,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547418735] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:36,899 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:36,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:00:36,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545650040] [2022-03-03 18:00:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:36,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:00:36,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:00:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:00:36,900 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) [2022-03-03 18:00:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:37,734 INFO L93 Difference]: Finished difference Result 1287 states and 3138 transitions. [2022-03-03 18:00:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 18:00:37,735 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 [2022-03-03 18:00:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:37,736 INFO L225 Difference]: With dead ends: 1287 [2022-03-03 18:00:37,736 INFO L226 Difference]: Without dead ends: 971 [2022-03-03 18:00:37,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=1566, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:00:37,736 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 296 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:37,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2611 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:00:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-03-03 18:00:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-03-03 18:00:37,744 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) [2022-03-03 18:00:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2419 transitions. [2022-03-03 18:00:37,745 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2419 transitions. Word has length 79 [2022-03-03 18:00:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:37,745 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2419 transitions. [2022-03-03 18:00:37,745 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) [2022-03-03 18:00:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2419 transitions. [2022-03-03 18:00:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:37,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:37,746 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] [2022-03-03 18:00:37,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-03 18:00:37,746 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1441860872, now seen corresponding path program 268 times [2022-03-03 18:00:37,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:37,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135920124] [2022-03-03 18:00:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:38,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:38,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135920124] [2022-03-03 18:00:38,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135920124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:38,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:38,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:38,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148722800] [2022-03-03 18:00:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:38,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:38,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:38,074 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) [2022-03-03 18:00:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:39,921 INFO L93 Difference]: Finished difference Result 1381 states and 3476 transitions. [2022-03-03 18:00:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 18:00:39,922 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 [2022-03-03 18:00:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:39,923 INFO L225 Difference]: With dead ends: 1381 [2022-03-03 18:00:39,923 INFO L226 Difference]: Without dead ends: 1251 [2022-03-03 18:00:39,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:00:39,924 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 321 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:39,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2732 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:00:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-03 18:00:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1087. [2022-03-03 18:00:39,934 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) [2022-03-03 18:00:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2730 transitions. [2022-03-03 18:00:39,945 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2730 transitions. Word has length 79 [2022-03-03 18:00:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:39,945 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2730 transitions. [2022-03-03 18:00:39,945 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) [2022-03-03 18:00:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2730 transitions. [2022-03-03 18:00:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:39,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:39,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:39,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-03 18:00:39,946 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:39,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 588469706, now seen corresponding path program 269 times [2022-03-03 18:00:39,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:39,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190445352] [2022-03-03 18:00:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:40,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:40,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190445352] [2022-03-03 18:00:40,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190445352] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:40,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:40,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:00:40,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821032620] [2022-03-03 18:00:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:40,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:00:40,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:00:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:00:40,307 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) [2022-03-03 18:00:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:42,870 INFO L93 Difference]: Finished difference Result 1392 states and 3496 transitions. [2022-03-03 18:00:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 18:00:42,871 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 [2022-03-03 18:00:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:42,872 INFO L225 Difference]: With dead ends: 1392 [2022-03-03 18:00:42,872 INFO L226 Difference]: Without dead ends: 1294 [2022-03-03 18:00:42,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=327, Invalid=3963, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 18:00:42,872 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 409 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 2896 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 18:00:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-03 18:00:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1091. [2022-03-03 18:00:42,882 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) [2022-03-03 18:00:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2737 transitions. [2022-03-03 18:00:42,883 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2737 transitions. Word has length 79 [2022-03-03 18:00:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:42,883 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2737 transitions. [2022-03-03 18:00:42,883 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) [2022-03-03 18:00:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2737 transitions. [2022-03-03 18:00:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:42,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:42,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:42,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-03 18:00:42,885 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1302706984, now seen corresponding path program 270 times [2022-03-03 18:00:42,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:42,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784711361] [2022-03-03 18:00:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:43,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:43,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784711361] [2022-03-03 18:00:43,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784711361] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:43,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:43,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:00:43,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490635771] [2022-03-03 18:00:43,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:00:43,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:00:43,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:00:43,238 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) [2022-03-03 18:00:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:45,321 INFO L93 Difference]: Finished difference Result 1375 states and 3447 transitions. [2022-03-03 18:00:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:00:45,321 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 [2022-03-03 18:00:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:45,323 INFO L225 Difference]: With dead ends: 1375 [2022-03-03 18:00:45,323 INFO L226 Difference]: Without dead ends: 1262 [2022-03-03 18:00:45,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=320, Invalid=3840, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 18:00:45,324 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 415 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:45,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 3037 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:00:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-03 18:00:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1079. [2022-03-03 18:00:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.50834879406308) internal successors, (2704), 1078 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2704 transitions. [2022-03-03 18:00:45,336 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2704 transitions. Word has length 79 [2022-03-03 18:00:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:45,336 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2704 transitions. [2022-03-03 18:00:45,336 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) [2022-03-03 18:00:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2704 transitions. [2022-03-03 18:00:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:45,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:45,338 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] [2022-03-03 18:00:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-03 18:00:45,338 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:45,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1628155210, now seen corresponding path program 271 times [2022-03-03 18:00:45,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:45,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252824838] [2022-03-03 18:00:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:45,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:45,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252824838] [2022-03-03 18:00:45,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252824838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:45,668 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:45,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:45,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34003877] [2022-03-03 18:00:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:45,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:45,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:45,669 INFO L87 Difference]: Start difference. First operand 1079 states and 2704 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) [2022-03-03 18:00:48,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:00:50,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:00:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:51,244 INFO L93 Difference]: Finished difference Result 1353 states and 3387 transitions. [2022-03-03 18:00:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:00:51,244 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 [2022-03-03 18:00:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:51,246 INFO L225 Difference]: With dead ends: 1353 [2022-03-03 18:00:51,246 INFO L226 Difference]: Without dead ends: 1203 [2022-03-03 18:00:51,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=271, Invalid=3035, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:00:51,246 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 357 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:51,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2635 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1062 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-03 18:00:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-03 18:00:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1075. [2022-03-03 18:00:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.507448789571695) internal successors, (2693), 1074 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2693 transitions. [2022-03-03 18:00:51,256 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2693 transitions. Word has length 79 [2022-03-03 18:00:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:51,256 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2693 transitions. [2022-03-03 18:00:51,256 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) [2022-03-03 18:00:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2693 transitions. [2022-03-03 18:00:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:51,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:51,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:51,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-03-03 18:00:51,258 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1805229752, now seen corresponding path program 272 times [2022-03-03 18:00:51,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:51,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732185416] [2022-03-03 18:00:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:51,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:51,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732185416] [2022-03-03 18:00:51,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732185416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:51,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:51,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:51,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939292117] [2022-03-03 18:00:51,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:51,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:51,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:51,595 INFO L87 Difference]: Start difference. First operand 1075 states and 2693 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) [2022-03-03 18:00:55,830 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 [] [2022-03-03 18:00:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:56,088 INFO L93 Difference]: Finished difference Result 1446 states and 3586 transitions. [2022-03-03 18:00:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 18:00:56,088 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 [2022-03-03 18:00:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:56,090 INFO L225 Difference]: With dead ends: 1446 [2022-03-03 18:00:56,090 INFO L226 Difference]: Without dead ends: 1348 [2022-03-03 18:00:56,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=304, Invalid=3478, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:00:56,090 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 383 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:56,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 2824 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1128 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-03 18:00:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-03-03 18:00:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1087. [2022-03-03 18:00:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5064456721915285) internal successors, (2722), 1086 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) [2022-03-03 18:00:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2722 transitions. [2022-03-03 18:00:56,101 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2722 transitions. Word has length 79 [2022-03-03 18:00:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:56,102 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2722 transitions. [2022-03-03 18:00:56,102 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) [2022-03-03 18:00:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2722 transitions. [2022-03-03 18:00:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:56,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:56,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-03 18:00:56,103 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1090992474, now seen corresponding path program 273 times [2022-03-03 18:00:56,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:56,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122141381] [2022-03-03 18:00:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:56,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:56,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122141381] [2022-03-03 18:00:56,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122141381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:56,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:00:56,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:00:56,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697649702] [2022-03-03 18:00:56,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:56,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:00:56,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:00:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:00:56,454 INFO L87 Difference]: Start difference. First operand 1087 states and 2722 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) [2022-03-03 18:00:58,975 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 [] [2022-03-03 18:00:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:59,775 INFO L93 Difference]: Finished difference Result 1365 states and 3407 transitions. [2022-03-03 18:00:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:00:59,776 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 [2022-03-03 18:00:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:59,777 INFO L225 Difference]: With dead ends: 1365 [2022-03-03 18:00:59,777 INFO L226 Difference]: Without dead ends: 1190 [2022-03-03 18:00:59,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3135, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:00:59,778 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 354 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:59,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2794 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-03 18:00:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-03 18:00:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1051. [2022-03-03 18:00:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.505714285714286) internal successors, (2631), 1050 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2631 transitions. [2022-03-03 18:00:59,788 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2631 transitions. Word has length 79 [2022-03-03 18:00:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:59,788 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2631 transitions. [2022-03-03 18:00:59,788 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) [2022-03-03 18:00:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2631 transitions. [2022-03-03 18:00:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:00:59,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:59,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:59,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-03-03 18:00:59,789 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:59,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2095320746, now seen corresponding path program 274 times [2022-03-03 18:00:59,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:59,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395494751] [2022-03-03 18:00:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:59,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:00,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:00,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395494751] [2022-03-03 18:01:00,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395494751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:00,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:00,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:00,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904313432] [2022-03-03 18:01:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:00,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:00,126 INFO L87 Difference]: Start difference. First operand 1051 states and 2631 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) [2022-03-03 18:01:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:02,090 INFO L93 Difference]: Finished difference Result 1345 states and 3369 transitions. [2022-03-03 18:01:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:01:02,090 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 [2022-03-03 18:01:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:02,092 INFO L225 Difference]: With dead ends: 1345 [2022-03-03 18:01:02,092 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 18:01:02,092 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 [2022-03-03 18:01:02,092 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:02,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2904 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:01:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 18:01:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1071. [2022-03-03 18:01:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.502803738317757) internal successors, (2678), 1070 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2678 transitions. [2022-03-03 18:01:02,102 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2678 transitions. Word has length 79 [2022-03-03 18:01:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:02,102 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2678 transitions. [2022-03-03 18:01:02,103 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) [2022-03-03 18:01:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2678 transitions. [2022-03-03 18:01:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:02,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:02,104 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] [2022-03-03 18:01:02,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-03 18:01:02,104 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1241929580, now seen corresponding path program 275 times [2022-03-03 18:01:02,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:02,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187244682] [2022-03-03 18:01:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:02,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:02,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:02,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187244682] [2022-03-03 18:01:02,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187244682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:02,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:02,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:02,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245101346] [2022-03-03 18:01:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:02,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:02,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:02,459 INFO L87 Difference]: Start difference. First operand 1071 states and 2678 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) [2022-03-03 18:01:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:04,183 INFO L93 Difference]: Finished difference Result 1336 states and 3338 transitions. [2022-03-03 18:01:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:01:04,183 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 [2022-03-03 18:01:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:04,185 INFO L225 Difference]: With dead ends: 1336 [2022-03-03 18:01:04,185 INFO L226 Difference]: Without dead ends: 1238 [2022-03-03 18:01:04,186 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 [2022-03-03 18:01:04,186 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 366 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:04,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 2928 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:01:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-03-03 18:01:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1075. [2022-03-03 18:01:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.5) internal successors, (2685), 1074 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) [2022-03-03 18:01:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2685 transitions. [2022-03-03 18:01:04,197 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2685 transitions. Word has length 79 [2022-03-03 18:01:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:04,197 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2685 transitions. [2022-03-03 18:01:04,197 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) [2022-03-03 18:01:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2685 transitions. [2022-03-03 18:01:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:04,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:04,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:04,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-03-03 18:01:04,198 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1956166858, now seen corresponding path program 276 times [2022-03-03 18:01:04,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:04,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949681689] [2022-03-03 18:01:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:04,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:04,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949681689] [2022-03-03 18:01:04,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949681689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:04,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:04,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:04,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338023687] [2022-03-03 18:01:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:04,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:04,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:04,549 INFO L87 Difference]: Start difference. First operand 1075 states and 2685 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) [2022-03-03 18:01:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:06,239 INFO L93 Difference]: Finished difference Result 1319 states and 3289 transitions. [2022-03-03 18:01:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 18:01:06,239 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 [2022-03-03 18:01:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:06,241 INFO L225 Difference]: With dead ends: 1319 [2022-03-03 18:01:06,241 INFO L226 Difference]: Without dead ends: 1206 [2022-03-03 18:01:06,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:01:06,242 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 375 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:06,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2842 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:01:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-03 18:01:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1063. [2022-03-03 18:01:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.504708097928437) internal successors, (2660), 1062 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2660 transitions. [2022-03-03 18:01:06,253 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2660 transitions. Word has length 79 [2022-03-03 18:01:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:06,253 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2660 transitions. [2022-03-03 18:01:06,253 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) [2022-03-03 18:01:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2660 transitions. [2022-03-03 18:01:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:06,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:06,254 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] [2022-03-03 18:01:06,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-03-03 18:01:06,254 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2013352212, now seen corresponding path program 277 times [2022-03-03 18:01:06,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:06,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676131446] [2022-03-03 18:01:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:06,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:06,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676131446] [2022-03-03 18:01:06,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676131446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:06,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:06,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:06,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661228117] [2022-03-03 18:01:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:06,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:06,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:06,596 INFO L87 Difference]: Start difference. First operand 1063 states and 2660 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) [2022-03-03 18:01:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:08,694 INFO L93 Difference]: Finished difference Result 1325 states and 3310 transitions. [2022-03-03 18:01:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:01:08,694 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 [2022-03-03 18:01:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:08,696 INFO L225 Difference]: With dead ends: 1325 [2022-03-03 18:01:08,696 INFO L226 Difference]: Without dead ends: 1175 [2022-03-03 18:01:08,697 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 [2022-03-03 18:01:08,697 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 349 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:08,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2695 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 18:01:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-03-03 18:01:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1059. [2022-03-03 18:01:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.503780718336484) internal successors, (2649), 1058 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2649 transitions. [2022-03-03 18:01:08,707 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2649 transitions. Word has length 79 [2022-03-03 18:01:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2649 transitions. [2022-03-03 18:01:08,707 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) [2022-03-03 18:01:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2649 transitions. [2022-03-03 18:01:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:08,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:08,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:08,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-03-03 18:01:08,708 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1575034120, now seen corresponding path program 278 times [2022-03-03 18:01:08,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:08,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081283840] [2022-03-03 18:01:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:09,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:09,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081283840] [2022-03-03 18:01:09,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081283840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:09,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:09,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:09,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530796690] [2022-03-03 18:01:09,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:09,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:09,053 INFO L87 Difference]: Start difference. First operand 1059 states and 2649 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) [2022-03-03 18:01:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:10,439 INFO L93 Difference]: Finished difference Result 1357 states and 3386 transitions. [2022-03-03 18:01:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:01:10,439 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 [2022-03-03 18:01:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:10,441 INFO L225 Difference]: With dead ends: 1357 [2022-03-03 18:01:10,441 INFO L226 Difference]: Without dead ends: 1155 [2022-03-03 18:01:10,442 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 [2022-03-03 18:01:10,442 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 313 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:10,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2895 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-03 18:01:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1035. [2022-03-03 18:01:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.501934235976789) internal successors, (2587), 1034 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2587 transitions. [2022-03-03 18:01:10,453 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2587 transitions. Word has length 79 [2022-03-03 18:01:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:10,453 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2587 transitions. [2022-03-03 18:01:10,453 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) [2022-03-03 18:01:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2587 transitions. [2022-03-03 18:01:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:10,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:10,454 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] [2022-03-03 18:01:10,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-03-03 18:01:10,454 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -982497334, now seen corresponding path program 279 times [2022-03-03 18:01:10,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:10,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359798382] [2022-03-03 18:01:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:10,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:10,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359798382] [2022-03-03 18:01:10,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359798382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:10,840 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:10,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:10,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370133070] [2022-03-03 18:01:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:10,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:10,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:10,841 INFO L87 Difference]: Start difference. First operand 1035 states and 2587 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) [2022-03-03 18:01:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:12,830 INFO L93 Difference]: Finished difference Result 1377 states and 3457 transitions. [2022-03-03 18:01:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 18:01:12,830 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 [2022-03-03 18:01:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:12,832 INFO L225 Difference]: With dead ends: 1377 [2022-03-03 18:01:12,832 INFO L226 Difference]: Without dead ends: 1247 [2022-03-03 18:01:12,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=333, Invalid=4089, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 18:01:12,833 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 378 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:12,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2984 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 18:01:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-03 18:01:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1075. [2022-03-03 18:01:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.503724394785847) internal successors, (2689), 1074 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) [2022-03-03 18:01:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2689 transitions. [2022-03-03 18:01:12,844 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2689 transitions. Word has length 79 [2022-03-03 18:01:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:12,844 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2689 transitions. [2022-03-03 18:01:12,844 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) [2022-03-03 18:01:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2689 transitions. [2022-03-03 18:01:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:12,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:12,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:12,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-03-03 18:01:12,845 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1835888500, now seen corresponding path program 280 times [2022-03-03 18:01:12,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:12,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040185565] [2022-03-03 18:01:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:13,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:13,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040185565] [2022-03-03 18:01:13,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040185565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:13,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:13,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:13,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276824402] [2022-03-03 18:01:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:13,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:13,209 INFO L87 Difference]: Start difference. First operand 1075 states and 2689 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) [2022-03-03 18:01:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:14,878 INFO L93 Difference]: Finished difference Result 1368 states and 3426 transitions. [2022-03-03 18:01:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:01:14,879 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 [2022-03-03 18:01:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:14,881 INFO L225 Difference]: With dead ends: 1368 [2022-03-03 18:01:14,881 INFO L226 Difference]: Without dead ends: 1270 [2022-03-03 18:01:14,881 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 [2022-03-03 18:01:14,881 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 299 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:14,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 3208 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-03-03 18:01:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1079. [2022-03-03 18:01:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.5009276437847867) internal successors, (2696), 1078 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) [2022-03-03 18:01:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2696 transitions. [2022-03-03 18:01:14,893 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2696 transitions. Word has length 79 [2022-03-03 18:01:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:14,894 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2696 transitions. [2022-03-03 18:01:14,894 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) [2022-03-03 18:01:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2696 transitions. [2022-03-03 18:01:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:14,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:14,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:14,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-03 18:01:14,895 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1121651222, now seen corresponding path program 281 times [2022-03-03 18:01:14,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:14,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654891825] [2022-03-03 18:01:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:15,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:15,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654891825] [2022-03-03 18:01:15,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654891825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:15,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:15,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:15,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26151874] [2022-03-03 18:01:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:15,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:15,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:15,258 INFO L87 Difference]: Start difference. First operand 1079 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) [2022-03-03 18:01:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:17,348 INFO L93 Difference]: Finished difference Result 1351 states and 3377 transitions. [2022-03-03 18:01:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 18:01:17,349 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 [2022-03-03 18:01:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:17,350 INFO L225 Difference]: With dead ends: 1351 [2022-03-03 18:01:17,350 INFO L226 Difference]: Without dead ends: 1238 [2022-03-03 18:01:17,350 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 [2022-03-03 18:01:17,351 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 383 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:17,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 3004 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:01:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-03-03 18:01:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1067. [2022-03-03 18:01:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4981238273921202) internal successors, (2663), 1066 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2663 transitions. [2022-03-03 18:01:17,361 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2663 transitions. Word has length 79 [2022-03-03 18:01:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:17,361 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2663 transitions. [2022-03-03 18:01:17,361 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) [2022-03-03 18:01:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2663 transitions. [2022-03-03 18:01:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:17,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:17,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:17,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-03-03 18:01:17,362 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -796202996, now seen corresponding path program 282 times [2022-03-03 18:01:17,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:17,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330399447] [2022-03-03 18:01:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:17,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:17,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330399447] [2022-03-03 18:01:17,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330399447] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:17,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:17,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:17,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869533862] [2022-03-03 18:01:17,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:17,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:17,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:17,725 INFO L87 Difference]: Start difference. First operand 1067 states and 2663 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) [2022-03-03 18:01:20,010 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 [] [2022-03-03 18:01:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:21,679 INFO L93 Difference]: Finished difference Result 1365 states and 3408 transitions. [2022-03-03 18:01:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 18:01:21,679 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 [2022-03-03 18:01:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:21,681 INFO L225 Difference]: With dead ends: 1365 [2022-03-03 18:01:21,681 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 18:01:21,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=306, Invalid=3726, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 18:01:21,681 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 388 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:21,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 3013 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1161 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-03 18:01:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 18:01:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1063. [2022-03-03 18:01:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4971751412429377) internal successors, (2652), 1062 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2652 transitions. [2022-03-03 18:01:21,692 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2652 transitions. Word has length 79 [2022-03-03 18:01:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2652 transitions. [2022-03-03 18:01:21,692 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) [2022-03-03 18:01:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2652 transitions. [2022-03-03 18:01:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:21,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:21,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:21,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-03-03 18:01:21,693 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash 65379338, now seen corresponding path program 283 times [2022-03-03 18:01:21,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:21,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562616323] [2022-03-03 18:01:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:21,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:22,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:22,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562616323] [2022-03-03 18:01:22,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562616323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:22,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:22,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:22,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841606818] [2022-03-03 18:01:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:22,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:22,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:22,038 INFO L87 Difference]: Start difference. First operand 1063 states and 2652 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) [2022-03-03 18:01:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:23,757 INFO L93 Difference]: Finished difference Result 1346 states and 3353 transitions. [2022-03-03 18:01:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:01:23,757 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 [2022-03-03 18:01:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:23,759 INFO L225 Difference]: With dead ends: 1346 [2022-03-03 18:01:23,759 INFO L226 Difference]: Without dead ends: 1248 [2022-03-03 18:01:23,759 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 [2022-03-03 18:01:23,759 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 282 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:23,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2995 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:01:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-03-03 18:01:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1087. [2022-03-03 18:01:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.4953959484346226) internal successors, (2710), 1086 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) [2022-03-03 18:01:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-03-03 18:01:23,770 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-03-03 18:01:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:23,770 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-03-03 18:01:23,770 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) [2022-03-03 18:01:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-03-03 18:01:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:23,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:23,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:23,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-03-03 18:01:23,771 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1381912230, now seen corresponding path program 284 times [2022-03-03 18:01:23,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:23,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327621400] [2022-03-03 18:01:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:24,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:24,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327621400] [2022-03-03 18:01:24,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327621400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:24,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:24,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:24,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761661864] [2022-03-03 18:01:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:24,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:24,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:24,108 INFO L87 Difference]: Start difference. First operand 1087 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) [2022-03-03 18:01:26,791 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 [] [2022-03-03 18:01:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:27,800 INFO L93 Difference]: Finished difference Result 1402 states and 3479 transitions. [2022-03-03 18:01:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:01:27,800 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 [2022-03-03 18:01:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:27,802 INFO L225 Difference]: With dead ends: 1402 [2022-03-03 18:01:27,802 INFO L226 Difference]: Without dead ends: 1243 [2022-03-03 18:01:27,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=3234, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:01:27,802 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 340 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:27,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2853 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1104 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 18:01:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-03 18:01:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1115. [2022-03-03 18:01:27,812 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) [2022-03-03 18:01:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2775 transitions. [2022-03-03 18:01:27,813 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2775 transitions. Word has length 79 [2022-03-03 18:01:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:27,813 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2775 transitions. [2022-03-03 18:01:27,813 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) [2022-03-03 18:01:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2775 transitions. [2022-03-03 18:01:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:27,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:27,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:27,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-03-03 18:01:27,815 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1579397944, now seen corresponding path program 285 times [2022-03-03 18:01:27,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:27,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060255655] [2022-03-03 18:01:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:28,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:28,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060255655] [2022-03-03 18:01:28,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060255655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:28,159 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:28,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:28,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750438850] [2022-03-03 18:01:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:28,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:28,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:28,159 INFO L87 Difference]: Start difference. First operand 1115 states and 2775 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) [2022-03-03 18:01:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:30,090 INFO L93 Difference]: Finished difference Result 1433 states and 3567 transitions. [2022-03-03 18:01:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:01:30,090 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 [2022-03-03 18:01:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:30,092 INFO L225 Difference]: With dead ends: 1433 [2022-03-03 18:01:30,092 INFO L226 Difference]: Without dead ends: 1303 [2022-03-03 18:01:30,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=296, Invalid=3364, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:01:30,092 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 343 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:30,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2716 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:01:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-03 18:01:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1147. [2022-03-03 18:01:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4912739965095985) internal successors, (2855), 1146 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2855 transitions. [2022-03-03 18:01:30,104 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2855 transitions. Word has length 79 [2022-03-03 18:01:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:30,104 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2855 transitions. [2022-03-03 18:01:30,104 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) [2022-03-03 18:01:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2855 transitions. [2022-03-03 18:01:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:30,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:30,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:30,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-03-03 18:01:30,106 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1862178186, now seen corresponding path program 286 times [2022-03-03 18:01:30,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:30,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876633328] [2022-03-03 18:01:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:30,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:30,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876633328] [2022-03-03 18:01:30,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876633328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:30,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:30,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:30,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501236743] [2022-03-03 18:01:30,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:30,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:30,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:30,471 INFO L87 Difference]: Start difference. First operand 1147 states and 2855 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) [2022-03-03 18:01:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:32,036 INFO L93 Difference]: Finished difference Result 1404 states and 3493 transitions. [2022-03-03 18:01:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:01:32,036 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 [2022-03-03 18:01:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:32,038 INFO L225 Difference]: With dead ends: 1404 [2022-03-03 18:01:32,038 INFO L226 Difference]: Without dead ends: 1306 [2022-03-03 18:01:32,039 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 [2022-03-03 18:01:32,039 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 293 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:32,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2886 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-03-03 18:01:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1151. [2022-03-03 18:01:32,053 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) [2022-03-03 18:01:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2862 transitions. [2022-03-03 18:01:32,056 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2862 transitions. Word has length 79 [2022-03-03 18:01:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:32,056 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2862 transitions. [2022-03-03 18:01:32,056 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) [2022-03-03 18:01:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2862 transitions. [2022-03-03 18:01:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:32,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:32,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:32,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-03-03 18:01:32,058 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1718551832, now seen corresponding path program 287 times [2022-03-03 18:01:32,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:32,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739910302] [2022-03-03 18:01:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:32,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:32,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739910302] [2022-03-03 18:01:32,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739910302] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:32,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:32,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:32,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061810769] [2022-03-03 18:01:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:32,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:32,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:32,412 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) [2022-03-03 18:01:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:33,936 INFO L93 Difference]: Finished difference Result 1372 states and 3409 transitions. [2022-03-03 18:01:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:01:33,936 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 [2022-03-03 18:01:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:33,938 INFO L225 Difference]: With dead ends: 1372 [2022-03-03 18:01:33,938 INFO L226 Difference]: Without dead ends: 1259 [2022-03-03 18:01:33,939 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 [2022-03-03 18:01:33,939 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 307 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:33,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2906 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-03 18:01:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1139. [2022-03-03 18:01:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4894551845342705) internal successors, (2833), 1138 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2833 transitions. [2022-03-03 18:01:33,950 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2833 transitions. Word has length 79 [2022-03-03 18:01:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:33,950 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2833 transitions. [2022-03-03 18:01:33,950 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) [2022-03-03 18:01:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2833 transitions. [2022-03-03 18:01:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:33,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:33,951 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] [2022-03-03 18:01:33,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-03-03 18:01:33,951 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1159593240, now seen corresponding path program 288 times [2022-03-03 18:01:33,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:33,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776878671] [2022-03-03 18:01:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:34,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:34,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776878671] [2022-03-03 18:01:34,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776878671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:34,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:34,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:34,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361165090] [2022-03-03 18:01:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:34,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:34,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:34,288 INFO L87 Difference]: Start difference. First operand 1139 states and 2833 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) [2022-03-03 18:01:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:36,056 INFO L93 Difference]: Finished difference Result 1422 states and 3534 transitions. [2022-03-03 18:01:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:01:36,056 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 [2022-03-03 18:01:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:36,058 INFO L225 Difference]: With dead ends: 1422 [2022-03-03 18:01:36,058 INFO L226 Difference]: Without dead ends: 1324 [2022-03-03 18:01:36,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:01:36,059 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 353 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:36,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2717 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:01:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-03-03 18:01:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1123. [2022-03-03 18:01:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4928698752228162) internal successors, (2797), 1122 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2797 transitions. [2022-03-03 18:01:36,071 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2797 transitions. Word has length 79 [2022-03-03 18:01:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:36,071 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2797 transitions. [2022-03-03 18:01:36,071 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) [2022-03-03 18:01:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2797 transitions. [2022-03-03 18:01:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:36,072 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:36,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:36,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-03-03 18:01:36,072 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:36,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash 156939652, now seen corresponding path program 289 times [2022-03-03 18:01:36,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:36,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738995369] [2022-03-03 18:01:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:36,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:36,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738995369] [2022-03-03 18:01:36,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738995369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:36,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:36,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:36,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846366048] [2022-03-03 18:01:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:36,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:36,419 INFO L87 Difference]: Start difference. First operand 1123 states and 2797 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) [2022-03-03 18:01:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:37,917 INFO L93 Difference]: Finished difference Result 1390 states and 3446 transitions. [2022-03-03 18:01:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:01:37,917 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 [2022-03-03 18:01:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:37,919 INFO L225 Difference]: With dead ends: 1390 [2022-03-03 18:01:37,919 INFO L226 Difference]: Without dead ends: 1239 [2022-03-03 18:01:37,920 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 [2022-03-03 18:01:37,920 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 298 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:37,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 3018 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-03-03 18:01:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1123. [2022-03-03 18:01:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.485739750445633) internal successors, (2789), 1122 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2789 transitions. [2022-03-03 18:01:37,931 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2789 transitions. Word has length 79 [2022-03-03 18:01:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:37,931 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2789 transitions. [2022-03-03 18:01:37,931 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) [2022-03-03 18:01:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2789 transitions. [2022-03-03 18:01:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:37,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:37,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:37,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-03-03 18:01:37,932 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1011030760, now seen corresponding path program 290 times [2022-03-03 18:01:37,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:37,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066672287] [2022-03-03 18:01:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:38,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:38,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066672287] [2022-03-03 18:01:38,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066672287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:38,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:38,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:38,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929141308] [2022-03-03 18:01:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:38,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:38,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:38,315 INFO L87 Difference]: Start difference. First operand 1123 states and 2789 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) [2022-03-03 18:01:41,111 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 [] [2022-03-03 18:01:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:42,176 INFO L93 Difference]: Finished difference Result 1438 states and 3566 transitions. [2022-03-03 18:01:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 18:01:42,176 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 [2022-03-03 18:01:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:42,178 INFO L225 Difference]: With dead ends: 1438 [2022-03-03 18:01:42,178 INFO L226 Difference]: Without dead ends: 1340 [2022-03-03 18:01:42,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=3596, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:01:42,179 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 323 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:42,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2878 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1116 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 18:01:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-03-03 18:01:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1135. [2022-03-03 18:01:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4814814814814814) internal successors, (2814), 1134 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2814 transitions. [2022-03-03 18:01:42,190 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2814 transitions. Word has length 79 [2022-03-03 18:01:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2814 transitions. [2022-03-03 18:01:42,190 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) [2022-03-03 18:01:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2814 transitions. [2022-03-03 18:01:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:42,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:42,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:42,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-03-03 18:01:42,192 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1967403644, now seen corresponding path program 291 times [2022-03-03 18:01:42,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:42,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071928557] [2022-03-03 18:01:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:42,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:42,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071928557] [2022-03-03 18:01:42,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071928557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:42,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:42,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:42,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373399106] [2022-03-03 18:01:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:42,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:42,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:42,551 INFO L87 Difference]: Start difference. First operand 1135 states and 2814 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) [2022-03-03 18:01:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:44,240 INFO L93 Difference]: Finished difference Result 1461 states and 3623 transitions. [2022-03-03 18:01:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:01:44,240 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 [2022-03-03 18:01:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:44,242 INFO L225 Difference]: With dead ends: 1461 [2022-03-03 18:01:44,242 INFO L226 Difference]: Without dead ends: 1298 [2022-03-03 18:01:44,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=317, Invalid=3715, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 18:01:44,243 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 365 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:44,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 3009 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-03-03 18:01:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1151. [2022-03-03 18:01:44,254 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) [2022-03-03 18:01:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2842 transitions. [2022-03-03 18:01:44,256 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2842 transitions. Word has length 79 [2022-03-03 18:01:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:44,256 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2842 transitions. [2022-03-03 18:01:44,256 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) [2022-03-03 18:01:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2842 transitions. [2022-03-03 18:01:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:44,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:44,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:44,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-03-03 18:01:44,257 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1197048622, now seen corresponding path program 292 times [2022-03-03 18:01:44,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:44,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129392143] [2022-03-03 18:01:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:44,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:44,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129392143] [2022-03-03 18:01:44,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129392143] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:44,613 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:44,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:44,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803610953] [2022-03-03 18:01:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:44,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:44,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:44,614 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) [2022-03-03 18:01:46,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:01:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:47,469 INFO L93 Difference]: Finished difference Result 1428 states and 3518 transitions. [2022-03-03 18:01:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:01:47,469 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 [2022-03-03 18:01:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:47,471 INFO L225 Difference]: With dead ends: 1428 [2022-03-03 18:01:47,471 INFO L226 Difference]: Without dead ends: 1246 [2022-03-03 18:01:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:01:47,472 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 317 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2886 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 18:01:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-03-03 18:01:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1127. [2022-03-03 18:01:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.47246891651865) internal successors, (2784), 1126 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2784 transitions. [2022-03-03 18:01:47,483 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2784 transitions. Word has length 79 [2022-03-03 18:01:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:47,483 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2784 transitions. [2022-03-03 18:01:47,483 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) [2022-03-03 18:01:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2784 transitions. [2022-03-03 18:01:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:47,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:47,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:47,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-03-03 18:01:47,485 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash -38797690, now seen corresponding path program 293 times [2022-03-03 18:01:47,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:47,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093257766] [2022-03-03 18:01:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:47,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:47,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:47,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093257766] [2022-03-03 18:01:47,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093257766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:47,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:47,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:47,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630868048] [2022-03-03 18:01:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:47,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:47,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:47,829 INFO L87 Difference]: Start difference. First operand 1127 states and 2784 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) [2022-03-03 18:01:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:49,288 INFO L93 Difference]: Finished difference Result 1465 states and 3643 transitions. [2022-03-03 18:01:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:01:49,288 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 [2022-03-03 18:01:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:49,290 INFO L225 Difference]: With dead ends: 1465 [2022-03-03 18:01:49,290 INFO L226 Difference]: Without dead ends: 1335 [2022-03-03 18:01:49,291 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 [2022-03-03 18:01:49,291 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 305 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:49,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2899 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-03-03 18:01:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1187. [2022-03-03 18:01:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.4797639123102866) internal successors, (2941), 1186 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2941 transitions. [2022-03-03 18:01:49,304 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2941 transitions. Word has length 79 [2022-03-03 18:01:49,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:49,304 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2941 transitions. [2022-03-03 18:01:49,304 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) [2022-03-03 18:01:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2941 transitions. [2022-03-03 18:01:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:49,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:49,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:49,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-03-03 18:01:49,305 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -892188856, now seen corresponding path program 294 times [2022-03-03 18:01:49,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:49,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241210877] [2022-03-03 18:01:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:49,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:49,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241210877] [2022-03-03 18:01:49,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241210877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:49,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:49,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:49,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367209541] [2022-03-03 18:01:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:49,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:49,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:49,680 INFO L87 Difference]: Start difference. First operand 1187 states and 2941 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) [2022-03-03 18:01:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:51,461 INFO L93 Difference]: Finished difference Result 1476 states and 3663 transitions. [2022-03-03 18:01:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 18:01:51,461 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 [2022-03-03 18:01:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:51,463 INFO L225 Difference]: With dead ends: 1476 [2022-03-03 18:01:51,463 INFO L226 Difference]: Without dead ends: 1378 [2022-03-03 18:01:51,464 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 [2022-03-03 18:01:51,464 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 335 mSDsluCounter, 3239 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:51,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 3301 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:01:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-03-03 18:01:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1191. [2022-03-03 18:01:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.477310924369748) internal successors, (2948), 1190 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2948 transitions. [2022-03-03 18:01:51,485 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2948 transitions. Word has length 79 [2022-03-03 18:01:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:51,485 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2948 transitions. [2022-03-03 18:01:51,485 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) [2022-03-03 18:01:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2948 transitions. [2022-03-03 18:01:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:51,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:51,486 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] [2022-03-03 18:01:51,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-03-03 18:01:51,486 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash -177951578, now seen corresponding path program 295 times [2022-03-03 18:01:51,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:51,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003884565] [2022-03-03 18:01:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:51,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:51,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003884565] [2022-03-03 18:01:51,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003884565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:51,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:51,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:01:51,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231789262] [2022-03-03 18:01:51,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:51,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:01:51,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:51,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:01:51,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:01:51,842 INFO L87 Difference]: Start difference. First operand 1191 states and 2948 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) [2022-03-03 18:01:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:53,579 INFO L93 Difference]: Finished difference Result 1459 states and 3614 transitions. [2022-03-03 18:01:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 18:01:53,580 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 [2022-03-03 18:01:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:53,581 INFO L225 Difference]: With dead ends: 1459 [2022-03-03 18:01:53,581 INFO L226 Difference]: Without dead ends: 1346 [2022-03-03 18:01:53,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=303, Invalid=3603, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:01:53,582 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 373 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:53,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2958 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:01:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2022-03-03 18:01:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1179. [2022-03-03 18:01:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.474533106960951) internal successors, (2915), 1178 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2915 transitions. [2022-03-03 18:01:53,593 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2915 transitions. Word has length 79 [2022-03-03 18:01:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:53,593 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2915 transitions. [2022-03-03 18:01:53,593 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) [2022-03-03 18:01:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2915 transitions. [2022-03-03 18:01:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:53,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:53,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:53,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-03-03 18:01:53,595 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash 147496648, now seen corresponding path program 296 times [2022-03-03 18:01:53,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:53,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872389184] [2022-03-03 18:01:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:53,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:53,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:53,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872389184] [2022-03-03 18:01:53,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872389184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:53,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:53,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:53,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434765670] [2022-03-03 18:01:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:53,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:53,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:53,933 INFO L87 Difference]: Start difference. First operand 1179 states and 2915 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) [2022-03-03 18:01:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:55,709 INFO L93 Difference]: Finished difference Result 1437 states and 3554 transitions. [2022-03-03 18:01:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:01:55,710 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 [2022-03-03 18:01:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:55,711 INFO L225 Difference]: With dead ends: 1437 [2022-03-03 18:01:55,711 INFO L226 Difference]: Without dead ends: 1287 [2022-03-03 18:01:55,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:01:55,712 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 340 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:55,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2801 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 18:01:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-03 18:01:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1175. [2022-03-03 18:01:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.4735945485519593) internal successors, (2904), 1174 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2904 transitions. [2022-03-03 18:01:55,722 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2904 transitions. Word has length 79 [2022-03-03 18:01:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:55,723 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2904 transitions. [2022-03-03 18:01:55,723 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) [2022-03-03 18:01:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2904 transitions. [2022-03-03 18:01:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:55,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:55,724 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] [2022-03-03 18:01:55,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-03-03 18:01:55,724 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1009078982, now seen corresponding path program 297 times [2022-03-03 18:01:55,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:55,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029336860] [2022-03-03 18:01:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:56,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:56,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029336860] [2022-03-03 18:01:56,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029336860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:56,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:56,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:56,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381240118] [2022-03-03 18:01:56,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:56,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:56,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:56,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:56,071 INFO L87 Difference]: Start difference. First operand 1175 states and 2904 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) [2022-03-03 18:01:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:57,479 INFO L93 Difference]: Finished difference Result 1450 states and 3583 transitions. [2022-03-03 18:01:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:01:57,479 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 [2022-03-03 18:01:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:57,481 INFO L225 Difference]: With dead ends: 1450 [2022-03-03 18:01:57,481 INFO L226 Difference]: Without dead ends: 1352 [2022-03-03 18:01:57,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:01:57,482 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 303 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:57,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2834 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-03-03 18:01:57,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1151. [2022-03-03 18:01:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4782608695652173) internal successors, (2850), 1150 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2850 transitions. [2022-03-03 18:01:57,493 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2850 transitions. Word has length 79 [2022-03-03 18:01:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:57,493 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2850 transitions. [2022-03-03 18:01:57,493 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) [2022-03-03 18:01:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2850 transitions. [2022-03-03 18:01:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:01:57,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:57,494 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] [2022-03-03 18:01:57,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-03-03 18:01:57,494 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1969355422, now seen corresponding path program 298 times [2022-03-03 18:01:57,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:57,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727996408] [2022-03-03 18:01:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:57,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:57,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727996408] [2022-03-03 18:01:57,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727996408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:01:57,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:01:57,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:01:57,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665078156] [2022-03-03 18:01:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:01:57,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:01:57,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:01:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:01:57,835 INFO L87 Difference]: Start difference. First operand 1151 states and 2850 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) [2022-03-03 18:02:00,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:02:02,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:02:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:03,709 INFO L93 Difference]: Finished difference Result 1433 states and 3530 transitions. [2022-03-03 18:02:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:02:03,709 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 [2022-03-03 18:02:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:03,711 INFO L225 Difference]: With dead ends: 1433 [2022-03-03 18:02:03,711 INFO L226 Difference]: Without dead ends: 1274 [2022-03-03 18:02:03,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=2522, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:02:03,711 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 268 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:03,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2824 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1157 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-03-03 18:02:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-03-03 18:02:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1151. [2022-03-03 18:02:03,721 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) [2022-03-03 18:02:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2842 transitions. [2022-03-03 18:02:03,722 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2842 transitions. Word has length 79 [2022-03-03 18:02:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2842 transitions. [2022-03-03 18:02:03,723 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) [2022-03-03 18:02:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2842 transitions. [2022-03-03 18:02:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:03,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:03,724 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] [2022-03-03 18:02:03,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-03-03 18:02:03,724 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:03,724 INFO L85 PathProgramCache]: Analyzing trace with hash 614662184, now seen corresponding path program 299 times [2022-03-03 18:02:03,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:03,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653175448] [2022-03-03 18:02:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:04,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:04,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653175448] [2022-03-03 18:02:04,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653175448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:04,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:04,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:04,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94514746] [2022-03-03 18:02:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:04,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:04,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:04,061 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) [2022-03-03 18:02:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:05,820 INFO L93 Difference]: Finished difference Result 1437 states and 3558 transitions. [2022-03-03 18:02:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:02:05,820 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 [2022-03-03 18:02:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:05,822 INFO L225 Difference]: With dead ends: 1437 [2022-03-03 18:02:05,822 INFO L226 Difference]: Without dead ends: 1307 [2022-03-03 18:02:05,822 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 [2022-03-03 18:02:05,822 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 310 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:05,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2942 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:02:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-03-03 18:02:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1171. [2022-03-03 18:02:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.4692307692307693) internal successors, (2889), 1170 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2889 transitions. [2022-03-03 18:02:05,834 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2889 transitions. Word has length 79 [2022-03-03 18:02:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:05,834 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2889 transitions. [2022-03-03 18:02:05,834 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) [2022-03-03 18:02:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2889 transitions. [2022-03-03 18:02:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:05,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:05,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:05,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-03-03 18:02:05,835 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -238728982, now seen corresponding path program 300 times [2022-03-03 18:02:05,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:05,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431664069] [2022-03-03 18:02:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:06,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:06,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431664069] [2022-03-03 18:02:06,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431664069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:06,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:06,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:06,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790641355] [2022-03-03 18:02:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:06,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:06,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:06,203 INFO L87 Difference]: Start difference. First operand 1171 states and 2889 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) [2022-03-03 18:02:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:07,758 INFO L93 Difference]: Finished difference Result 1428 states and 3527 transitions. [2022-03-03 18:02:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 18:02:07,758 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 [2022-03-03 18:02:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:07,760 INFO L225 Difference]: With dead ends: 1428 [2022-03-03 18:02:07,760 INFO L226 Difference]: Without dead ends: 1330 [2022-03-03 18:02:07,763 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 [2022-03-03 18:02:07,764 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 334 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:07,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3074 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-03-03 18:02:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1175. [2022-03-03 18:02:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.466780238500852) internal successors, (2896), 1174 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) [2022-03-03 18:02:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2896 transitions. [2022-03-03 18:02:07,780 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2896 transitions. Word has length 79 [2022-03-03 18:02:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:07,780 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2896 transitions. [2022-03-03 18:02:07,780 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) [2022-03-03 18:02:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2896 transitions. [2022-03-03 18:02:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:07,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:07,781 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] [2022-03-03 18:02:07,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-03-03 18:02:07,782 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash 475508296, now seen corresponding path program 301 times [2022-03-03 18:02:07,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:07,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731427757] [2022-03-03 18:02:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:08,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:08,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731427757] [2022-03-03 18:02:08,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731427757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:08,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:08,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:08,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784867319] [2022-03-03 18:02:08,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:08,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:08,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:08,152 INFO L87 Difference]: Start difference. First operand 1175 states and 2896 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) [2022-03-03 18:02:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:09,770 INFO L93 Difference]: Finished difference Result 1411 states and 3478 transitions. [2022-03-03 18:02:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 18:02:09,770 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 [2022-03-03 18:02:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:09,772 INFO L225 Difference]: With dead ends: 1411 [2022-03-03 18:02:09,772 INFO L226 Difference]: Without dead ends: 1298 [2022-03-03 18:02:09,773 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 [2022-03-03 18:02:09,773 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 368 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:09,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2878 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:02:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-03-03 18:02:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1163. [2022-03-03 18:02:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.4707401032702236) internal successors, (2871), 1162 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2871 transitions. [2022-03-03 18:02:09,785 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2871 transitions. Word has length 79 [2022-03-03 18:02:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:09,785 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2871 transitions. [2022-03-03 18:02:09,786 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) [2022-03-03 18:02:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2871 transitions. [2022-03-03 18:02:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:09,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:09,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:09,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-03-03 18:02:09,787 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash 800956522, now seen corresponding path program 302 times [2022-03-03 18:02:09,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:09,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056918417] [2022-03-03 18:02:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:10,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:10,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056918417] [2022-03-03 18:02:10,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056918417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:10,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:10,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:10,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345486541] [2022-03-03 18:02:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:10,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:10,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:10,116 INFO L87 Difference]: Start difference. First operand 1163 states and 2871 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) [2022-03-03 18:02:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:11,477 INFO L93 Difference]: Finished difference Result 1417 states and 3499 transitions. [2022-03-03 18:02:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:02:11,478 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 [2022-03-03 18:02:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:11,480 INFO L225 Difference]: With dead ends: 1417 [2022-03-03 18:02:11,480 INFO L226 Difference]: Without dead ends: 1267 [2022-03-03 18:02:11,480 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 [2022-03-03 18:02:11,480 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 296 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:11,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2966 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-03 18:02:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1159. [2022-03-03 18:02:11,490 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) [2022-03-03 18:02:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2860 transitions. [2022-03-03 18:02:11,492 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2860 transitions. Word has length 79 [2022-03-03 18:02:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:11,492 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2860 transitions. [2022-03-03 18:02:11,492 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) [2022-03-03 18:02:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2860 transitions. [2022-03-03 18:02:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:11,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:11,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:11,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-03-03 18:02:11,493 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash 94375558, now seen corresponding path program 303 times [2022-03-03 18:02:11,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:11,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752616086] [2022-03-03 18:02:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:11,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:11,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752616086] [2022-03-03 18:02:11,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752616086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:11,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:11,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:11,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271806535] [2022-03-03 18:02:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:11,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:11,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:11,837 INFO L87 Difference]: Start difference. First operand 1159 states and 2860 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) [2022-03-03 18:02:14,621 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 [] [2022-03-03 18:02:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:15,407 INFO L93 Difference]: Finished difference Result 1441 states and 3557 transitions. [2022-03-03 18:02:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:02:15,407 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 [2022-03-03 18:02:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:15,409 INFO L225 Difference]: With dead ends: 1441 [2022-03-03 18:02:15,409 INFO L226 Difference]: Without dead ends: 1239 [2022-03-03 18:02:15,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=3260, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:02:15,410 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 381 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:15,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 2762 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1051 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:02:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-03-03 18:02:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1135. [2022-03-03 18:02:15,420 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) [2022-03-03 18:02:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2798 transitions. [2022-03-03 18:02:15,421 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2798 transitions. Word has length 79 [2022-03-03 18:02:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:15,421 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2798 transitions. [2022-03-03 18:02:15,421 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) [2022-03-03 18:02:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2798 transitions. [2022-03-03 18:02:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:15,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:15,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:15,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-03-03 18:02:15,422 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1363674998, now seen corresponding path program 304 times [2022-03-03 18:02:15,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:15,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934154003] [2022-03-03 18:02:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:15,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:15,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934154003] [2022-03-03 18:02:15,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934154003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:15,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:15,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:15,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355562021] [2022-03-03 18:02:15,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:15,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:15,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:15,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:15,838 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) [2022-03-03 18:02:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:17,879 INFO L93 Difference]: Finished difference Result 1417 states and 3503 transitions. [2022-03-03 18:02:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:02:17,879 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 [2022-03-03 18:02:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:17,881 INFO L225 Difference]: With dead ends: 1417 [2022-03-03 18:02:17,881 INFO L226 Difference]: Without dead ends: 1287 [2022-03-03 18:02:17,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3376, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:02:17,882 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 350 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:17,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2754 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:02:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-03 18:02:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1159. [2022-03-03 18:02:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.466321243523316) internal successors, (2856), 1158 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) [2022-03-03 18:02:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2856 transitions. [2022-03-03 18:02:17,894 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2856 transitions. Word has length 79 [2022-03-03 18:02:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2856 transitions. [2022-03-03 18:02:17,894 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) [2022-03-03 18:02:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2856 transitions. [2022-03-03 18:02:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:17,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:17,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:17,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-03-03 18:02:17,895 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2077901132, now seen corresponding path program 305 times [2022-03-03 18:02:17,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:17,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247809522] [2022-03-03 18:02:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:18,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:18,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247809522] [2022-03-03 18:02:18,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247809522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:18,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:18,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:18,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859777348] [2022-03-03 18:02:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:18,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:18,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:18,256 INFO L87 Difference]: Start difference. First operand 1159 states and 2856 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) [2022-03-03 18:02:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:20,327 INFO L93 Difference]: Finished difference Result 1393 states and 3437 transitions. [2022-03-03 18:02:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:02:20,328 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 [2022-03-03 18:02:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:20,330 INFO L225 Difference]: With dead ends: 1393 [2022-03-03 18:02:20,330 INFO L226 Difference]: Without dead ends: 1295 [2022-03-03 18:02:20,330 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 [2022-03-03 18:02:20,330 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 291 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:20,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2735 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 18:02:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-03-03 18:02:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1163. [2022-03-03 18:02:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.463855421686747) internal successors, (2863), 1162 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) [2022-03-03 18:02:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2863 transitions. [2022-03-03 18:02:20,342 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2863 transitions. Word has length 79 [2022-03-03 18:02:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:20,342 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2863 transitions. [2022-03-03 18:02:20,342 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) [2022-03-03 18:02:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2863 transitions. [2022-03-03 18:02:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:20,343 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:20,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:20,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-03-03 18:02:20,343 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1502828886, now seen corresponding path program 306 times [2022-03-03 18:02:20,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:20,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033497369] [2022-03-03 18:02:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:20,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:20,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033497369] [2022-03-03 18:02:20,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033497369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:20,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:20,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:20,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087378870] [2022-03-03 18:02:20,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:20,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:20,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:20,708 INFO L87 Difference]: Start difference. First operand 1163 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) [2022-03-03 18:02:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:22,286 INFO L93 Difference]: Finished difference Result 1391 states and 3423 transitions. [2022-03-03 18:02:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:02:22,287 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 [2022-03-03 18:02:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:22,288 INFO L225 Difference]: With dead ends: 1391 [2022-03-03 18:02:22,288 INFO L226 Difference]: Without dead ends: 1278 [2022-03-03 18:02:22,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=2524, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:02:22,289 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 277 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:22,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2890 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:02:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-03 18:02:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1151. [2022-03-03 18:02:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4678260869565216) internal successors, (2838), 1150 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) [2022-03-03 18:02:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2838 transitions. [2022-03-03 18:02:22,300 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2838 transitions. Word has length 79 [2022-03-03 18:02:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:22,301 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2838 transitions. [2022-03-03 18:02:22,301 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) [2022-03-03 18:02:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2838 transitions. [2022-03-03 18:02:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:22,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:22,302 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] [2022-03-03 18:02:22,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-03-03 18:02:22,302 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1177380660, now seen corresponding path program 307 times [2022-03-03 18:02:22,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:22,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157797039] [2022-03-03 18:02:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:22,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:22,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157797039] [2022-03-03 18:02:22,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157797039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:22,653 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:22,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:22,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262195899] [2022-03-03 18:02:22,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:22,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:22,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:22,654 INFO L87 Difference]: Start difference. First operand 1151 states and 2838 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) [2022-03-03 18:02:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:24,030 INFO L93 Difference]: Finished difference Result 1397 states and 3444 transitions. [2022-03-03 18:02:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:02:24,030 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 [2022-03-03 18:02:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:24,032 INFO L225 Difference]: With dead ends: 1397 [2022-03-03 18:02:24,032 INFO L226 Difference]: Without dead ends: 1247 [2022-03-03 18:02:24,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:02:24,033 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 308 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:24,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 2866 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-03 18:02:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1147. [2022-03-03 18:02:24,043 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) [2022-03-03 18:02:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2827 transitions. [2022-03-03 18:02:24,044 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2827 transitions. Word has length 79 [2022-03-03 18:02:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:24,045 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2827 transitions. [2022-03-03 18:02:24,045 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) [2022-03-03 18:02:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2827 transitions. [2022-03-03 18:02:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:24,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:24,046 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] [2022-03-03 18:02:24,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-03-03 18:02:24,046 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:24,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1883961624, now seen corresponding path program 308 times [2022-03-03 18:02:24,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:24,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426172992] [2022-03-03 18:02:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:24,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:24,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426172992] [2022-03-03 18:02:24,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426172992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:24,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:24,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:24,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388626777] [2022-03-03 18:02:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:24,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:24,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:24,408 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) [2022-03-03 18:02:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:25,861 INFO L93 Difference]: Finished difference Result 1421 states and 3502 transitions. [2022-03-03 18:02:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:02:25,862 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 [2022-03-03 18:02:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:25,864 INFO L225 Difference]: With dead ends: 1421 [2022-03-03 18:02:25,864 INFO L226 Difference]: Without dead ends: 1235 [2022-03-03 18:02:25,864 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 [2022-03-03 18:02:25,864 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 333 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:25,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 3022 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:02:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-03 18:02:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1139. [2022-03-03 18:02:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4648506151142353) internal successors, (2805), 1138 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2805 transitions. [2022-03-03 18:02:25,877 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2805 transitions. Word has length 79 [2022-03-03 18:02:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:25,877 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2805 transitions. [2022-03-03 18:02:25,877 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) [2022-03-03 18:02:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2805 transitions. [2022-03-03 18:02:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:25,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:25,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:25,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-03-03 18:02:25,878 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash 60251718, now seen corresponding path program 309 times [2022-03-03 18:02:25,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:25,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224927504] [2022-03-03 18:02:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:25,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:26,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:26,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224927504] [2022-03-03 18:02:26,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224927504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:26,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:26,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 18:02:26,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514564124] [2022-03-03 18:02:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:26,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:02:26,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:02:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:02:26,253 INFO L87 Difference]: Start difference. First operand 1139 states and 2805 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) [2022-03-03 18:02:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:28,631 INFO L93 Difference]: Finished difference Result 1425 states and 3505 transitions. [2022-03-03 18:02:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:02:28,631 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 [2022-03-03 18:02:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:28,633 INFO L225 Difference]: With dead ends: 1425 [2022-03-03 18:02:28,633 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 18:02:28,633 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 [2022-03-03 18:02:28,633 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 356 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:28,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2812 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 18:02:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 18:02:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1123. [2022-03-03 18:02:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.471479500891266) internal successors, (2773), 1122 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2773 transitions. [2022-03-03 18:02:28,644 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2773 transitions. Word has length 79 [2022-03-03 18:02:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:28,644 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2773 transitions. [2022-03-03 18:02:28,644 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) [2022-03-03 18:02:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2773 transitions. [2022-03-03 18:02:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:28,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:28,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:28,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-03-03 18:02:28,645 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1245773446, now seen corresponding path program 310 times [2022-03-03 18:02:28,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:28,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477525879] [2022-03-03 18:02:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:28,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:28,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477525879] [2022-03-03 18:02:28,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477525879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:28,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:28,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:28,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448187355] [2022-03-03 18:02:28,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:28,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:28,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:28,985 INFO L87 Difference]: Start difference. First operand 1123 states and 2773 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) [2022-03-03 18:02:30,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:02:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:32,687 INFO L93 Difference]: Finished difference Result 1433 states and 3555 transitions. [2022-03-03 18:02:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:02:32,687 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 [2022-03-03 18:02:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:32,689 INFO L225 Difference]: With dead ends: 1433 [2022-03-03 18:02:32,689 INFO L226 Difference]: Without dead ends: 1303 [2022-03-03 18:02:32,690 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 [2022-03-03 18:02:32,690 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 355 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:32,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2777 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 18:02:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-03 18:02:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1183. [2022-03-03 18:02:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.478849407783418) internal successors, (2930), 1182 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2930 transitions. [2022-03-03 18:02:32,701 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2930 transitions. Word has length 79 [2022-03-03 18:02:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:32,701 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2930 transitions. [2022-03-03 18:02:32,701 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) [2022-03-03 18:02:32,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2930 transitions. [2022-03-03 18:02:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:32,703 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:32,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:32,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-03-03 18:02:32,703 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 392382280, now seen corresponding path program 311 times [2022-03-03 18:02:32,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:32,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922722580] [2022-03-03 18:02:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:33,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:33,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922722580] [2022-03-03 18:02:33,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922722580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:33,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:33,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:33,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838796721] [2022-03-03 18:02:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:33,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:33,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:33,054 INFO L87 Difference]: Start difference. First operand 1183 states and 2930 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) [2022-03-03 18:02:34,927 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 [] [2022-03-03 18:02:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:36,558 INFO L93 Difference]: Finished difference Result 1432 states and 3546 transitions. [2022-03-03 18:02:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:02:36,559 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 [2022-03-03 18:02:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:36,560 INFO L225 Difference]: With dead ends: 1432 [2022-03-03 18:02:36,561 INFO L226 Difference]: Without dead ends: 1334 [2022-03-03 18:02:36,561 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 [2022-03-03 18:02:36,561 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 342 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:36,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3005 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:02:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2022-03-03 18:02:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1187. [2022-03-03 18:02:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.4763912310286678) internal successors, (2937), 1186 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2937 transitions. [2022-03-03 18:02:36,573 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2937 transitions. Word has length 79 [2022-03-03 18:02:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:36,573 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2937 transitions. [2022-03-03 18:02:36,573 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) [2022-03-03 18:02:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2937 transitions. [2022-03-03 18:02:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:36,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:36,575 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] [2022-03-03 18:02:36,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-03-03 18:02:36,575 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1106619558, now seen corresponding path program 312 times [2022-03-03 18:02:36,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:36,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553317147] [2022-03-03 18:02:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:36,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:36,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553317147] [2022-03-03 18:02:36,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553317147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:36,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:36,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:36,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074562563] [2022-03-03 18:02:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:36,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:36,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:36,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:36,930 INFO L87 Difference]: Start difference. First operand 1187 states and 2937 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) [2022-03-03 18:02:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:38,324 INFO L93 Difference]: Finished difference Result 1415 states and 3497 transitions. [2022-03-03 18:02:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:02:38,324 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 [2022-03-03 18:02:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:38,326 INFO L225 Difference]: With dead ends: 1415 [2022-03-03 18:02:38,326 INFO L226 Difference]: Without dead ends: 1302 [2022-03-03 18:02:38,327 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 [2022-03-03 18:02:38,327 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 318 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:38,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 3026 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-03-03 18:02:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1175. [2022-03-03 18:02:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.4735945485519593) internal successors, (2904), 1174 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2904 transitions. [2022-03-03 18:02:38,339 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2904 transitions. Word has length 79 [2022-03-03 18:02:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:38,339 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2904 transitions. [2022-03-03 18:02:38,339 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) [2022-03-03 18:02:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2904 transitions. [2022-03-03 18:02:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:38,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:38,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:38,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-03-03 18:02:38,340 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1432067784, now seen corresponding path program 313 times [2022-03-03 18:02:38,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:38,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311271992] [2022-03-03 18:02:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:38,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:38,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311271992] [2022-03-03 18:02:38,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311271992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:38,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:38,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:02:38,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760664708] [2022-03-03 18:02:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:38,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:02:38,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:02:38,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:02:38,698 INFO L87 Difference]: Start difference. First operand 1175 states and 2904 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) [2022-03-03 18:02:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:41,460 INFO L93 Difference]: Finished difference Result 1409 states and 3477 transitions. [2022-03-03 18:02:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:02:41,460 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 [2022-03-03 18:02:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:41,462 INFO L225 Difference]: With dead ends: 1409 [2022-03-03 18:02:41,462 INFO L226 Difference]: Without dead ends: 1259 [2022-03-03 18:02:41,463 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 [2022-03-03 18:02:41,463 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 357 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:41,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2785 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 18:02:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-03 18:02:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1171. [2022-03-03 18:02:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.4726495726495727) internal successors, (2893), 1170 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) [2022-03-03 18:02:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2893 transitions. [2022-03-03 18:02:41,474 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2893 transitions. Word has length 79 [2022-03-03 18:02:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:41,474 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2893 transitions. [2022-03-03 18:02:41,474 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) [2022-03-03 18:02:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2893 transitions. [2022-03-03 18:02:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:41,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:41,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:41,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-03-03 18:02:41,476 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2001317178, now seen corresponding path program 314 times [2022-03-03 18:02:41,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:41,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689434472] [2022-03-03 18:02:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:41,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:41,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689434472] [2022-03-03 18:02:41,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689434472] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:41,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:41,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:41,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86961864] [2022-03-03 18:02:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:41,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:41,808 INFO L87 Difference]: Start difference. First operand 1171 states and 2893 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) [2022-03-03 18:02:44,429 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 [] [2022-03-03 18:02:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:45,487 INFO L93 Difference]: Finished difference Result 1462 states and 3604 transitions. [2022-03-03 18:02:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:02:45,487 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 [2022-03-03 18:02:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:45,489 INFO L225 Difference]: With dead ends: 1462 [2022-03-03 18:02:45,489 INFO L226 Difference]: Without dead ends: 1364 [2022-03-03 18:02:45,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:02:45,490 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 324 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:45,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2684 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1032 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-03 18:02:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-03-03 18:02:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1195. [2022-03-03 18:02:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4782244556113904) internal successors, (2959), 1194 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2959 transitions. [2022-03-03 18:02:45,503 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2959 transitions. Word has length 79 [2022-03-03 18:02:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:45,503 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2959 transitions. [2022-03-03 18:02:45,503 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) [2022-03-03 18:02:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2959 transitions. [2022-03-03 18:02:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:45,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:45,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:45,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-03-03 18:02:45,504 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash -684784286, now seen corresponding path program 315 times [2022-03-03 18:02:45,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:45,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569235745] [2022-03-03 18:02:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:45,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:45,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569235745] [2022-03-03 18:02:45,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569235745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:45,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:45,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:45,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791553133] [2022-03-03 18:02:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:45,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:45,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:45,837 INFO L87 Difference]: Start difference. First operand 1195 states and 2959 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) [2022-03-03 18:02:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:47,968 INFO L93 Difference]: Finished difference Result 1493 states and 3679 transitions. [2022-03-03 18:02:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:02:47,968 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 [2022-03-03 18:02:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:47,970 INFO L225 Difference]: With dead ends: 1493 [2022-03-03 18:02:47,970 INFO L226 Difference]: Without dead ends: 1306 [2022-03-03 18:02:47,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:02:47,971 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 285 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:47,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2915 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 18:02:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-03-03 18:02:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1195. [2022-03-03 18:02:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4715242881072026) internal successors, (2951), 1194 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) [2022-03-03 18:02:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2951 transitions. [2022-03-03 18:02:47,983 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2951 transitions. Word has length 79 [2022-03-03 18:02:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:47,983 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2951 transitions. [2022-03-03 18:02:47,983 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) [2022-03-03 18:02:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2951 transitions. [2022-03-03 18:02:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:47,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:47,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:47,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-03-03 18:02:47,985 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1587384008, now seen corresponding path program 316 times [2022-03-03 18:02:47,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:47,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040298377] [2022-03-03 18:02:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:47,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:48,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:48,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040298377] [2022-03-03 18:02:48,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040298377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:48,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:48,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:48,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305562164] [2022-03-03 18:02:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:48,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:48,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:48,315 INFO L87 Difference]: Start difference. First operand 1195 states and 2951 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) [2022-03-03 18:02:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:49,888 INFO L93 Difference]: Finished difference Result 1457 states and 3581 transitions. [2022-03-03 18:02:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:02:49,888 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 [2022-03-03 18:02:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:49,890 INFO L225 Difference]: With dead ends: 1457 [2022-03-03 18:02:49,890 INFO L226 Difference]: Without dead ends: 1343 [2022-03-03 18:02:49,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:02:49,891 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 323 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:49,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2567 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:02:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-03-03 18:02:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1219. [2022-03-03 18:02:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.473727422003284) internal successors, (3013), 1218 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3013 transitions. [2022-03-03 18:02:49,906 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3013 transitions. Word has length 79 [2022-03-03 18:02:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:49,906 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3013 transitions. [2022-03-03 18:02:49,906 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) [2022-03-03 18:02:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3013 transitions. [2022-03-03 18:02:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:49,908 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:49,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:49,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-03-03 18:02:49,908 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1220489578, now seen corresponding path program 317 times [2022-03-03 18:02:49,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:49,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139606395] [2022-03-03 18:02:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:49,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:50,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:50,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139606395] [2022-03-03 18:02:50,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139606395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:50,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:50,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:50,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809702961] [2022-03-03 18:02:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:50,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:50,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:50,244 INFO L87 Difference]: Start difference. First operand 1219 states and 3013 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) [2022-03-03 18:02:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:51,791 INFO L93 Difference]: Finished difference Result 1468 states and 3605 transitions. [2022-03-03 18:02:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:02:51,791 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 [2022-03-03 18:02:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:51,793 INFO L225 Difference]: With dead ends: 1468 [2022-03-03 18:02:51,793 INFO L226 Difference]: Without dead ends: 1370 [2022-03-03 18:02:51,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:02:51,794 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 282 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:51,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2826 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:02:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-03-03 18:02:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1223. [2022-03-03 18:02:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.4713584288052375) internal successors, (3020), 1222 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3020 transitions. [2022-03-03 18:02:51,809 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3020 transitions. Word has length 79 [2022-03-03 18:02:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:51,809 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 3020 transitions. [2022-03-03 18:02:51,809 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) [2022-03-03 18:02:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3020 transitions. [2022-03-03 18:02:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:51,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:51,811 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] [2022-03-03 18:02:51,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-03-03 18:02:51,811 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1934726856, now seen corresponding path program 318 times [2022-03-03 18:02:51,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:51,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120305822] [2022-03-03 18:02:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:52,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:52,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120305822] [2022-03-03 18:02:52,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120305822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:52,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:52,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:52,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252489611] [2022-03-03 18:02:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:52,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:52,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:52,136 INFO L87 Difference]: Start difference. First operand 1223 states and 3020 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) [2022-03-03 18:02:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:53,444 INFO L93 Difference]: Finished difference Result 1436 states and 3521 transitions. [2022-03-03 18:02:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:02:53,445 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 [2022-03-03 18:02:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:53,446 INFO L225 Difference]: With dead ends: 1436 [2022-03-03 18:02:53,446 INFO L226 Difference]: Without dead ends: 1327 [2022-03-03 18:02:53,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:02:53,447 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 296 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:53,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2633 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-03-03 18:02:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1215. [2022-03-03 18:02:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.4728171334431632) internal successors, (3002), 1214 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 3002 transitions. [2022-03-03 18:02:53,458 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 3002 transitions. Word has length 79 [2022-03-03 18:02:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:53,459 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 3002 transitions. [2022-03-03 18:02:53,459 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) [2022-03-03 18:02:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 3002 transitions. [2022-03-03 18:02:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:02:53,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:53,460 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] [2022-03-03 18:02:53,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-03-03 18:02:53,460 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1889549626, now seen corresponding path program 319 times [2022-03-03 18:02:53,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:53,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720004764] [2022-03-03 18:02:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:53,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:53,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720004764] [2022-03-03 18:02:53,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720004764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:02:53,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:02:53,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:02:53,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505908711] [2022-03-03 18:02:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:02:53,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:02:53,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:02:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:02:53,797 INFO L87 Difference]: Start difference. First operand 1215 states and 3002 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) [2022-03-03 18:02:57,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:02:59,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:03:01,541 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 [] [2022-03-03 18:03:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:01,725 INFO L93 Difference]: Finished difference Result 1570 states and 3827 transitions. [2022-03-03 18:03:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:03:01,726 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 [2022-03-03 18:03:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:01,728 INFO L225 Difference]: With dead ends: 1570 [2022-03-03 18:03:01,728 INFO L226 Difference]: Without dead ends: 1444 [2022-03-03 18:03:01,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=2901, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:03:01,728 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 387 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:01,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 2690 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1050 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-03-03 18:03:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-03-03 18:03:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1215. [2022-03-03 18:03:01,740 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) [2022-03-03 18:03:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2998 transitions. [2022-03-03 18:03:01,741 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2998 transitions. Word has length 79 [2022-03-03 18:03:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:01,741 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2998 transitions. [2022-03-03 18:03:01,741 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) [2022-03-03 18:03:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2998 transitions. [2022-03-03 18:03:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:01,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:01,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:01,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-03-03 18:03:01,743 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1175312348, now seen corresponding path program 320 times [2022-03-03 18:03:01,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:01,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812810543] [2022-03-03 18:03:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:02,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:02,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812810543] [2022-03-03 18:03:02,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812810543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:02,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:02,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:02,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458354056] [2022-03-03 18:03:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:02,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:02,072 INFO L87 Difference]: Start difference. First operand 1215 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) [2022-03-03 18:03:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:03,537 INFO L93 Difference]: Finished difference Result 1434 states and 3523 transitions. [2022-03-03 18:03:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:03:03,537 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 [2022-03-03 18:03:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:03,539 INFO L225 Difference]: With dead ends: 1434 [2022-03-03 18:03:03,539 INFO L226 Difference]: Without dead ends: 1275 [2022-03-03 18:03:03,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:03:03,540 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 325 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:03,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2644 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:03:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-03 18:03:03,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1195. [2022-03-03 18:03:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4681742043551087) internal successors, (2947), 1194 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2947 transitions. [2022-03-03 18:03:03,551 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2947 transitions. Word has length 79 [2022-03-03 18:03:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:03,551 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2947 transitions. [2022-03-03 18:03:03,551 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) [2022-03-03 18:03:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2947 transitions. [2022-03-03 18:03:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:03,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:03,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:03,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-03-03 18:03:03,552 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:03,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1055665756, now seen corresponding path program 321 times [2022-03-03 18:03:03,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:03,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740721668] [2022-03-03 18:03:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:03,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:03,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:03,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740721668] [2022-03-03 18:03:03,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740721668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:03,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:03,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:03,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291464829] [2022-03-03 18:03:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:03,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:03,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:03,894 INFO L87 Difference]: Start difference. First operand 1195 states and 2947 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) [2022-03-03 18:03:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:06,254 INFO L93 Difference]: Finished difference Result 1478 states and 3640 transitions. [2022-03-03 18:03:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:03:06,255 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 [2022-03-03 18:03:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:06,257 INFO L225 Difference]: With dead ends: 1478 [2022-03-03 18:03:06,257 INFO L226 Difference]: Without dead ends: 1380 [2022-03-03 18:03:06,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=3244, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:03:06,257 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 298 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:06,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2941 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 18:03:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2022-03-03 18:03:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1199. [2022-03-03 18:03:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.4691151919866443) internal successors, (2958), 1198 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2958 transitions. [2022-03-03 18:03:06,270 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2958 transitions. Word has length 79 [2022-03-03 18:03:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:06,270 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2958 transitions. [2022-03-03 18:03:06,270 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) [2022-03-03 18:03:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2958 transitions. [2022-03-03 18:03:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:06,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:06,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:06,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-03-03 18:03:06,271 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 260867136, now seen corresponding path program 322 times [2022-03-03 18:03:06,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:06,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326171280] [2022-03-03 18:03:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:06,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:06,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326171280] [2022-03-03 18:03:06,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326171280] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:06,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:06,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:06,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906548340] [2022-03-03 18:03:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:06,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:06,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:06,612 INFO L87 Difference]: Start difference. First operand 1199 states and 2958 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) [2022-03-03 18:03:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:08,125 INFO L93 Difference]: Finished difference Result 1434 states and 3523 transitions. [2022-03-03 18:03:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:03:08,126 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 [2022-03-03 18:03:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:08,128 INFO L225 Difference]: With dead ends: 1434 [2022-03-03 18:03:08,128 INFO L226 Difference]: Without dead ends: 1299 [2022-03-03 18:03:08,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=3134, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:03:08,128 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 324 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:08,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2818 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:03:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-03-03 18:03:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1199. [2022-03-03 18:03:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.4657762938230383) internal successors, (2954), 1198 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) [2022-03-03 18:03:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2954 transitions. [2022-03-03 18:03:08,140 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2954 transitions. Word has length 79 [2022-03-03 18:03:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:08,140 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2954 transitions. [2022-03-03 18:03:08,140 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) [2022-03-03 18:03:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2954 transitions. [2022-03-03 18:03:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:08,141 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:08,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:08,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-03-03 18:03:08,141 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -869647894, now seen corresponding path program 323 times [2022-03-03 18:03:08,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:08,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165014287] [2022-03-03 18:03:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:08,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:08,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:08,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165014287] [2022-03-03 18:03:08,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165014287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:08,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:08,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:08,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374304370] [2022-03-03 18:03:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:08,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:08,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:08,466 INFO L87 Difference]: Start difference. First operand 1199 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) [2022-03-03 18:03:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:09,936 INFO L93 Difference]: Finished difference Result 1437 states and 3525 transitions. [2022-03-03 18:03:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:03:09,937 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 [2022-03-03 18:03:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:09,938 INFO L225 Difference]: With dead ends: 1437 [2022-03-03 18:03:09,939 INFO L226 Difference]: Without dead ends: 1263 [2022-03-03 18:03:09,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:03:09,939 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 312 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2729 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:03:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-03 18:03:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1183. [2022-03-03 18:03:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.4619289340101522) internal successors, (2910), 1182 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) [2022-03-03 18:03:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2910 transitions. [2022-03-03 18:03:09,951 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2910 transitions. Word has length 79 [2022-03-03 18:03:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:09,951 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2910 transitions. [2022-03-03 18:03:09,951 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) [2022-03-03 18:03:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2910 transitions. [2022-03-03 18:03:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:09,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:09,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:09,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-03-03 18:03:09,952 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash -427957876, now seen corresponding path program 324 times [2022-03-03 18:03:09,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:09,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804007501] [2022-03-03 18:03:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:10,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:10,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804007501] [2022-03-03 18:03:10,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804007501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:10,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:10,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:10,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953071211] [2022-03-03 18:03:10,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:10,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:10,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:10,287 INFO L87 Difference]: Start difference. First operand 1183 states and 2910 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) [2022-03-03 18:03:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:11,923 INFO L93 Difference]: Finished difference Result 1454 states and 3574 transitions. [2022-03-03 18:03:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:03:11,923 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 [2022-03-03 18:03:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:11,925 INFO L225 Difference]: With dead ends: 1454 [2022-03-03 18:03:11,925 INFO L226 Difference]: Without dead ends: 1356 [2022-03-03 18:03:11,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=2708, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:03:11,926 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 284 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:11,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2799 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:03:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-03-03 18:03:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1195. [2022-03-03 18:03:11,936 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) [2022-03-03 18:03:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2943 transitions. [2022-03-03 18:03:11,938 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2943 transitions. Word has length 79 [2022-03-03 18:03:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:11,938 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2943 transitions. [2022-03-03 18:03:11,938 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) [2022-03-03 18:03:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2943 transitions. [2022-03-03 18:03:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:11,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:11,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:11,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-03-03 18:03:11,939 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash 888575016, now seen corresponding path program 325 times [2022-03-03 18:03:11,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:11,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801190106] [2022-03-03 18:03:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:12,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:12,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801190106] [2022-03-03 18:03:12,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801190106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:12,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:12,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:12,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90750937] [2022-03-03 18:03:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:12,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:12,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:12,275 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) [2022-03-03 18:03:13,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:03:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:14,781 INFO L93 Difference]: Finished difference Result 1410 states and 3457 transitions. [2022-03-03 18:03:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:03:14,782 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 [2022-03-03 18:03:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:14,783 INFO L225 Difference]: With dead ends: 1410 [2022-03-03 18:03:14,783 INFO L226 Difference]: Without dead ends: 1275 [2022-03-03 18:03:14,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2608, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:03:14,784 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 308 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:14,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 2556 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-03 18:03:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-03 18:03:14,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1195. [2022-03-03 18:03:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4614740368509214) internal successors, (2939), 1194 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) [2022-03-03 18:03:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2939 transitions. [2022-03-03 18:03:14,795 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2939 transitions. Word has length 79 [2022-03-03 18:03:14,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:14,795 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2939 transitions. [2022-03-03 18:03:14,795 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) [2022-03-03 18:03:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2939 transitions. [2022-03-03 18:03:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:14,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:14,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:14,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-03-03 18:03:14,797 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:14,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash -241940014, now seen corresponding path program 326 times [2022-03-03 18:03:14,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:14,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305555406] [2022-03-03 18:03:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:14,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:15,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:15,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305555406] [2022-03-03 18:03:15,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305555406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:15,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:15,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:03:15,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833412198] [2022-03-03 18:03:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:15,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:03:15,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:03:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:03:15,114 INFO L87 Difference]: Start difference. First operand 1195 states and 2939 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) [2022-03-03 18:03:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:17,414 INFO L93 Difference]: Finished difference Result 1421 states and 3481 transitions. [2022-03-03 18:03:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:03:17,414 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 [2022-03-03 18:03:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:17,416 INFO L225 Difference]: With dead ends: 1421 [2022-03-03 18:03:17,416 INFO L226 Difference]: Without dead ends: 1259 [2022-03-03 18:03:17,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:03:17,417 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 317 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:17,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2401 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 18:03:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-03 18:03:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1191. [2022-03-03 18:03:17,427 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) [2022-03-03 18:03:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2928 transitions. [2022-03-03 18:03:17,428 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2928 transitions. Word has length 79 [2022-03-03 18:03:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:17,429 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2928 transitions. [2022-03-03 18:03:17,429 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) [2022-03-03 18:03:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2928 transitions. [2022-03-03 18:03:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:17,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:17,430 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] [2022-03-03 18:03:17,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-03-03 18:03:17,430 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 150604966, now seen corresponding path program 327 times [2022-03-03 18:03:17,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:17,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555652023] [2022-03-03 18:03:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:17,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:17,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555652023] [2022-03-03 18:03:17,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555652023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:17,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:17,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 18:03:17,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219972887] [2022-03-03 18:03:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:17,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 18:03:17,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:17,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 18:03:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-03 18:03:17,750 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) [2022-03-03 18:03:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:19,720 INFO L93 Difference]: Finished difference Result 1518 states and 3729 transitions. [2022-03-03 18:03:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 18:03:19,720 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 [2022-03-03 18:03:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:19,722 INFO L225 Difference]: With dead ends: 1518 [2022-03-03 18:03:19,722 INFO L226 Difference]: Without dead ends: 1266 [2022-03-03 18:03:19,722 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 [2022-03-03 18:03:19,722 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:19,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2493 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 18:03:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-03-03 18:03:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1199. [2022-03-03 18:03:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.4691151919866443) internal successors, (2958), 1198 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2958 transitions. [2022-03-03 18:03:19,734 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2958 transitions. Word has length 79 [2022-03-03 18:03:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:19,734 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2958 transitions. [2022-03-03 18:03:19,734 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) [2022-03-03 18:03:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2958 transitions. [2022-03-03 18:03:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:19,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:19,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:19,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-03-03 18:03:19,735 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2056277992, now seen corresponding path program 328 times [2022-03-03 18:03:19,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:19,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115208489] [2022-03-03 18:03:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:20,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:20,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115208489] [2022-03-03 18:03:20,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115208489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:20,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:20,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:20,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714480616] [2022-03-03 18:03:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:20,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:20,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:20,063 INFO L87 Difference]: Start difference. First operand 1199 states and 2958 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) [2022-03-03 18:03:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:21,395 INFO L93 Difference]: Finished difference Result 1524 states and 3766 transitions. [2022-03-03 18:03:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:03:21,396 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 [2022-03-03 18:03:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:21,397 INFO L225 Difference]: With dead ends: 1524 [2022-03-03 18:03:21,397 INFO L226 Difference]: Without dead ends: 1337 [2022-03-03 18:03:21,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=2700, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:03:21,398 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 321 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:21,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2513 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-03-03 18:03:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1203. [2022-03-03 18:03:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.483361064891847) internal successors, (2985), 1202 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2985 transitions. [2022-03-03 18:03:21,410 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2985 transitions. Word has length 79 [2022-03-03 18:03:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:21,410 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 2985 transitions. [2022-03-03 18:03:21,410 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) [2022-03-03 18:03:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2985 transitions. [2022-03-03 18:03:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:21,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:21,411 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] [2022-03-03 18:03:21,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-03-03 18:03:21,411 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1685396522, now seen corresponding path program 329 times [2022-03-03 18:03:21,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:21,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288008271] [2022-03-03 18:03:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:21,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:21,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288008271] [2022-03-03 18:03:21,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288008271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:21,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:21,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:21,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925386220] [2022-03-03 18:03:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:21,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:21,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:21,762 INFO L87 Difference]: Start difference. First operand 1203 states and 2985 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) [2022-03-03 18:03:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:23,541 INFO L93 Difference]: Finished difference Result 1514 states and 3743 transitions. [2022-03-03 18:03:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 18:03:23,541 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 [2022-03-03 18:03:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:23,543 INFO L225 Difference]: With dead ends: 1514 [2022-03-03 18:03:23,543 INFO L226 Difference]: Without dead ends: 1380 [2022-03-03 18:03:23,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=3354, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:03:23,544 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 333 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:23,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2688 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:03:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2022-03-03 18:03:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1231. [2022-03-03 18:03:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 2.4959349593495936) internal successors, (3070), 1230 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3070 transitions. [2022-03-03 18:03:23,558 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3070 transitions. Word has length 79 [2022-03-03 18:03:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:23,558 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 3070 transitions. [2022-03-03 18:03:23,558 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) [2022-03-03 18:03:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3070 transitions. [2022-03-03 18:03:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:23,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:23,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:23,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-03-03 18:03:23,560 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash 190846504, now seen corresponding path program 330 times [2022-03-03 18:03:23,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:23,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031298855] [2022-03-03 18:03:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:23,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:23,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031298855] [2022-03-03 18:03:23,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031298855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:23,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:23,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:23,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994965495] [2022-03-03 18:03:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:23,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:23,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:23,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:23,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:23,887 INFO L87 Difference]: Start difference. First operand 1231 states and 3070 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) [2022-03-03 18:03:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:25,220 INFO L93 Difference]: Finished difference Result 1526 states and 3792 transitions. [2022-03-03 18:03:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:03:25,220 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 [2022-03-03 18:03:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:25,222 INFO L225 Difference]: With dead ends: 1526 [2022-03-03 18:03:25,222 INFO L226 Difference]: Without dead ends: 1364 [2022-03-03 18:03:25,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:03:25,222 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:25,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2535 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-03-03 18:03:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1211. [2022-03-03 18:03:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5148760330578512) internal successors, (3043), 1210 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3043 transitions. [2022-03-03 18:03:25,234 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3043 transitions. Word has length 79 [2022-03-03 18:03:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:25,234 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3043 transitions. [2022-03-03 18:03:25,234 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) [2022-03-03 18:03:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3043 transitions. [2022-03-03 18:03:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:25,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:25,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:25,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-03-03 18:03:25,235 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1480656586, now seen corresponding path program 331 times [2022-03-03 18:03:25,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:25,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114321635] [2022-03-03 18:03:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:25,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:25,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114321635] [2022-03-03 18:03:25,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114321635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:25,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:25,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:25,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693609636] [2022-03-03 18:03:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:25,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:25,553 INFO L87 Difference]: Start difference. First operand 1211 states and 3043 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) [2022-03-03 18:03:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:26,711 INFO L93 Difference]: Finished difference Result 1485 states and 3726 transitions. [2022-03-03 18:03:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 18:03:26,711 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 [2022-03-03 18:03:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:26,713 INFO L225 Difference]: With dead ends: 1485 [2022-03-03 18:03:26,713 INFO L226 Difference]: Without dead ends: 1355 [2022-03-03 18:03:26,714 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 [2022-03-03 18:03:26,714 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 292 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:26,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2456 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:03:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-03-03 18:03:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1255. [2022-03-03 18:03:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 2.5167464114832536) internal successors, (3156), 1254 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3156 transitions. [2022-03-03 18:03:26,728 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3156 transitions. Word has length 79 [2022-03-03 18:03:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:26,728 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 3156 transitions. [2022-03-03 18:03:26,728 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) [2022-03-03 18:03:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3156 transitions. [2022-03-03 18:03:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:26,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:26,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-03-03 18:03:26,729 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 627265420, now seen corresponding path program 332 times [2022-03-03 18:03:26,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:26,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209535924] [2022-03-03 18:03:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:27,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:27,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209535924] [2022-03-03 18:03:27,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209535924] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:27,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:27,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:27,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170616735] [2022-03-03 18:03:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:27,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:27,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:27,073 INFO L87 Difference]: Start difference. First operand 1255 states and 3156 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) [2022-03-03 18:03:28,579 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 [] [2022-03-03 18:03:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:29,739 INFO L93 Difference]: Finished difference Result 1496 states and 3746 transitions. [2022-03-03 18:03:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:03:29,739 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 [2022-03-03 18:03:29,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:29,741 INFO L225 Difference]: With dead ends: 1496 [2022-03-03 18:03:29,741 INFO L226 Difference]: Without dead ends: 1398 [2022-03-03 18:03:29,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:03:29,742 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 347 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:29,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2598 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-03 18:03:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2022-03-03 18:03:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1259. [2022-03-03 18:03:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 2.514308426073132) internal successors, (3163), 1258 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 3163 transitions. [2022-03-03 18:03:29,754 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 3163 transitions. Word has length 79 [2022-03-03 18:03:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:29,754 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 3163 transitions. [2022-03-03 18:03:29,754 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) [2022-03-03 18:03:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 3163 transitions. [2022-03-03 18:03:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:29,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:29,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:29,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-03-03 18:03:29,756 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1341502698, now seen corresponding path program 333 times [2022-03-03 18:03:29,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:29,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247370665] [2022-03-03 18:03:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:30,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:30,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247370665] [2022-03-03 18:03:30,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247370665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:30,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:30,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:30,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818391126] [2022-03-03 18:03:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:30,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:30,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:30,093 INFO L87 Difference]: Start difference. First operand 1259 states and 3163 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) [2022-03-03 18:03:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:31,438 INFO L93 Difference]: Finished difference Result 1479 states and 3697 transitions. [2022-03-03 18:03:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:03:31,439 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 [2022-03-03 18:03:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:31,441 INFO L225 Difference]: With dead ends: 1479 [2022-03-03 18:03:31,441 INFO L226 Difference]: Without dead ends: 1366 [2022-03-03 18:03:31,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2816, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:03:31,441 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 330 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:31,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2845 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-03-03 18:03:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1247. [2022-03-03 18:03:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 2.5120385232744784) internal successors, (3130), 1246 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3130 transitions. [2022-03-03 18:03:31,453 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3130 transitions. Word has length 79 [2022-03-03 18:03:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:31,453 INFO L470 AbstractCegarLoop]: Abstraction has 1247 states and 3130 transitions. [2022-03-03 18:03:31,453 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) [2022-03-03 18:03:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3130 transitions. [2022-03-03 18:03:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:31,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:31,454 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] [2022-03-03 18:03:31,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-03-03 18:03:31,454 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1666950924, now seen corresponding path program 334 times [2022-03-03 18:03:31,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:31,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854285531] [2022-03-03 18:03:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:31,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:31,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854285531] [2022-03-03 18:03:31,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854285531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:31,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:31,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:31,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800180139] [2022-03-03 18:03:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:31,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:31,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:31,768 INFO L87 Difference]: Start difference. First operand 1247 states and 3130 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) [2022-03-03 18:03:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:32,996 INFO L93 Difference]: Finished difference Result 1457 states and 3637 transitions. [2022-03-03 18:03:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:03:32,996 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 [2022-03-03 18:03:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:32,998 INFO L225 Difference]: With dead ends: 1457 [2022-03-03 18:03:32,998 INFO L226 Difference]: Without dead ends: 1307 [2022-03-03 18:03:32,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:03:32,999 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 294 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:32,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2468 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-03-03 18:03:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1243. [2022-03-03 18:03:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.5112721417069244) internal successors, (3119), 1242 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3119 transitions. [2022-03-03 18:03:33,010 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3119 transitions. Word has length 79 [2022-03-03 18:03:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:33,010 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 3119 transitions. [2022-03-03 18:03:33,010 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) [2022-03-03 18:03:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3119 transitions. [2022-03-03 18:03:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:33,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:33,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:33,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-03-03 18:03:33,012 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1766434038, now seen corresponding path program 335 times [2022-03-03 18:03:33,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:33,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439340323] [2022-03-03 18:03:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:33,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:33,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439340323] [2022-03-03 18:03:33,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439340323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:33,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:33,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:33,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836951519] [2022-03-03 18:03:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:33,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:33,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:33,334 INFO L87 Difference]: Start difference. First operand 1243 states and 3119 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) [2022-03-03 18:03:35,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-03 18:03:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:35,946 INFO L93 Difference]: Finished difference Result 1470 states and 3666 transitions. [2022-03-03 18:03:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:03:35,946 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 [2022-03-03 18:03:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:35,948 INFO L225 Difference]: With dead ends: 1470 [2022-03-03 18:03:35,948 INFO L226 Difference]: Without dead ends: 1372 [2022-03-03 18:03:35,949 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 [2022-03-03 18:03:35,949 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:35,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2522 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 18:03:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-03 18:03:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1243. [2022-03-03 18:03:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.5112721417069244) internal successors, (3119), 1242 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3119 transitions. [2022-03-03 18:03:35,960 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3119 transitions. Word has length 79 [2022-03-03 18:03:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:35,960 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 3119 transitions. [2022-03-03 18:03:35,960 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) [2022-03-03 18:03:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3119 transitions. [2022-03-03 18:03:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:35,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:35,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-03-03 18:03:35,962 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -449901146, now seen corresponding path program 336 times [2022-03-03 18:03:35,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:35,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059516932] [2022-03-03 18:03:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:36,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:36,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059516932] [2022-03-03 18:03:36,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059516932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:36,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:36,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:36,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975162851] [2022-03-03 18:03:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:36,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:36,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:36,281 INFO L87 Difference]: Start difference. First operand 1243 states and 3119 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) [2022-03-03 18:03:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:37,736 INFO L93 Difference]: Finished difference Result 1453 states and 3613 transitions. [2022-03-03 18:03:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:03:37,736 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 [2022-03-03 18:03:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:37,738 INFO L225 Difference]: With dead ends: 1453 [2022-03-03 18:03:37,738 INFO L226 Difference]: Without dead ends: 1294 [2022-03-03 18:03:37,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:03:37,738 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 276 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:37,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2497 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:03:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-03 18:03:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1219. [2022-03-03 18:03:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.5098522167487687) internal successors, (3057), 1218 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3057 transitions. [2022-03-03 18:03:37,750 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3057 transitions. Word has length 79 [2022-03-03 18:03:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:37,750 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3057 transitions. [2022-03-03 18:03:37,750 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) [2022-03-03 18:03:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3057 transitions. [2022-03-03 18:03:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:37,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:37,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:37,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-03-03 18:03:37,751 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2134116460, now seen corresponding path program 337 times [2022-03-03 18:03:37,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:37,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656333988] [2022-03-03 18:03:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:37,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:38,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:38,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656333988] [2022-03-03 18:03:38,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656333988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:38,056 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:38,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:38,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310261687] [2022-03-03 18:03:38,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:38,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:38,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:38,057 INFO L87 Difference]: Start difference. First operand 1219 states and 3057 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) [2022-03-03 18:03:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:39,115 INFO L93 Difference]: Finished difference Result 1445 states and 3608 transitions. [2022-03-03 18:03:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:03:39,116 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 [2022-03-03 18:03:39,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:39,117 INFO L225 Difference]: With dead ends: 1445 [2022-03-03 18:03:39,117 INFO L226 Difference]: Without dead ends: 1315 [2022-03-03 18:03:39,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 18:03:39,118 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 283 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:39,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2268 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-03-03 18:03:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1235. [2022-03-03 18:03:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 2.506482982171799) internal successors, (3093), 1234 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3093 transitions. [2022-03-03 18:03:39,129 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3093 transitions. Word has length 79 [2022-03-03 18:03:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:39,129 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 3093 transitions. [2022-03-03 18:03:39,129 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) [2022-03-03 18:03:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3093 transitions. [2022-03-03 18:03:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:39,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:39,130 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] [2022-03-03 18:03:39,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-03-03 18:03:39,130 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1280725294, now seen corresponding path program 338 times [2022-03-03 18:03:39,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:39,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638219588] [2022-03-03 18:03:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:39,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:39,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638219588] [2022-03-03 18:03:39,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638219588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:39,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:39,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:39,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896693502] [2022-03-03 18:03:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:39,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:39,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:39,461 INFO L87 Difference]: Start difference. First operand 1235 states and 3093 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) [2022-03-03 18:03:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:40,702 INFO L93 Difference]: Finished difference Result 1436 states and 3577 transitions. [2022-03-03 18:03:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:03:40,702 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 [2022-03-03 18:03:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:40,704 INFO L225 Difference]: With dead ends: 1436 [2022-03-03 18:03:40,704 INFO L226 Difference]: Without dead ends: 1338 [2022-03-03 18:03:40,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2715, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:03:40,704 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 286 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:40,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2826 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:03:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-03-03 18:03:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1239. [2022-03-03 18:03:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 2.504038772213247) internal successors, (3100), 1238 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3100 transitions. [2022-03-03 18:03:40,716 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3100 transitions. Word has length 79 [2022-03-03 18:03:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:40,716 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 3100 transitions. [2022-03-03 18:03:40,716 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) [2022-03-03 18:03:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3100 transitions. [2022-03-03 18:03:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:40,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:40,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:40,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-03-03 18:03:40,717 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1994962572, now seen corresponding path program 339 times [2022-03-03 18:03:40,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:40,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597156812] [2022-03-03 18:03:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:41,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:41,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597156812] [2022-03-03 18:03:41,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597156812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:41,045 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:41,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:41,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678490721] [2022-03-03 18:03:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:41,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:41,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:41,046 INFO L87 Difference]: Start difference. First operand 1239 states and 3100 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) [2022-03-03 18:03:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:42,800 INFO L93 Difference]: Finished difference Result 1419 states and 3528 transitions. [2022-03-03 18:03:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:03:42,800 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 [2022-03-03 18:03:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:42,802 INFO L225 Difference]: With dead ends: 1419 [2022-03-03 18:03:42,802 INFO L226 Difference]: Without dead ends: 1306 [2022-03-03 18:03:42,803 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 [2022-03-03 18:03:42,803 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 335 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:42,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 2531 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 18:03:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-03-03 18:03:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1227. [2022-03-03 18:03:42,813 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) [2022-03-03 18:03:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3075 transitions. [2022-03-03 18:03:42,814 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3075 transitions. Word has length 79 [2022-03-03 18:03:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3075 transitions. [2022-03-03 18:03:42,814 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) [2022-03-03 18:03:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3075 transitions. [2022-03-03 18:03:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:42,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:42,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:42,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-03-03 18:03:42,816 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1974556498, now seen corresponding path program 340 times [2022-03-03 18:03:42,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:42,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828018273] [2022-03-03 18:03:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:43,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:43,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828018273] [2022-03-03 18:03:43,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828018273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:43,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:43,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:43,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047674464] [2022-03-03 18:03:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:43,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:43,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:43,126 INFO L87 Difference]: Start difference. First operand 1227 states and 3075 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) [2022-03-03 18:03:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:44,147 INFO L93 Difference]: Finished difference Result 1425 states and 3549 transitions. [2022-03-03 18:03:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:03:44,147 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 [2022-03-03 18:03:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:44,149 INFO L225 Difference]: With dead ends: 1425 [2022-03-03 18:03:44,149 INFO L226 Difference]: Without dead ends: 1275 [2022-03-03 18:03:44,149 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 [2022-03-03 18:03:44,150 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 267 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:44,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2394 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-03 18:03:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1223. [2022-03-03 18:03:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.507364975450082) internal successors, (3064), 1222 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3064 transitions. [2022-03-03 18:03:44,161 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3064 transitions. Word has length 79 [2022-03-03 18:03:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:44,161 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 3064 transitions. [2022-03-03 18:03:44,161 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) [2022-03-03 18:03:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3064 transitions. [2022-03-03 18:03:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:44,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:44,162 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] [2022-03-03 18:03:44,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-03-03 18:03:44,162 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1613829834, now seen corresponding path program 341 times [2022-03-03 18:03:44,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:44,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423778672] [2022-03-03 18:03:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:44,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:44,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423778672] [2022-03-03 18:03:44,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423778672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:44,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:44,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:44,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384451896] [2022-03-03 18:03:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:44,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:44,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:44,479 INFO L87 Difference]: Start difference. First operand 1223 states and 3064 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) [2022-03-03 18:03:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:45,476 INFO L93 Difference]: Finished difference Result 1437 states and 3574 transitions. [2022-03-03 18:03:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:03:45,476 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 [2022-03-03 18:03:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:45,478 INFO L225 Difference]: With dead ends: 1437 [2022-03-03 18:03:45,478 INFO L226 Difference]: Without dead ends: 1263 [2022-03-03 18:03:45,478 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 [2022-03-03 18:03:45,478 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 243 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:45,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2398 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-03 18:03:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1211. [2022-03-03 18:03:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5115702479338844) internal successors, (3039), 1210 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3039 transitions. [2022-03-03 18:03:45,489 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3039 transitions. Word has length 79 [2022-03-03 18:03:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:45,490 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3039 transitions. [2022-03-03 18:03:45,490 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) [2022-03-03 18:03:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3039 transitions. [2022-03-03 18:03:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:45,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:45,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:45,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-03-03 18:03:45,491 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash 147984844, now seen corresponding path program 342 times [2022-03-03 18:03:45,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:45,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335638630] [2022-03-03 18:03:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:45,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:45,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335638630] [2022-03-03 18:03:45,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335638630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:45,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:45,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:45,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744464477] [2022-03-03 18:03:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:45,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:45,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:45,829 INFO L87 Difference]: Start difference. First operand 1211 states and 3039 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) [2022-03-03 18:03:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:47,297 INFO L93 Difference]: Finished difference Result 1441 states and 3601 transitions. [2022-03-03 18:03:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:03:47,298 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 [2022-03-03 18:03:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:47,299 INFO L225 Difference]: With dead ends: 1441 [2022-03-03 18:03:47,299 INFO L226 Difference]: Without dead ends: 1311 [2022-03-03 18:03:47,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:03:47,300 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 329 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:47,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2649 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-03-03 18:03:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1223. [2022-03-03 18:03:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.507364975450082) internal successors, (3064), 1222 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3064 transitions. [2022-03-03 18:03:47,311 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3064 transitions. Word has length 79 [2022-03-03 18:03:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 3064 transitions. [2022-03-03 18:03:47,311 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) [2022-03-03 18:03:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3064 transitions. [2022-03-03 18:03:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:47,312 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:47,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:47,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-03-03 18:03:47,313 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash -705406322, now seen corresponding path program 343 times [2022-03-03 18:03:47,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:47,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572972285] [2022-03-03 18:03:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:47,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:47,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:47,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572972285] [2022-03-03 18:03:47,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572972285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:47,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:47,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:47,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103401239] [2022-03-03 18:03:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:47,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:47,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:47,661 INFO L87 Difference]: Start difference. First operand 1223 states and 3064 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) [2022-03-03 18:03:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:48,978 INFO L93 Difference]: Finished difference Result 1428 states and 3559 transitions. [2022-03-03 18:03:48,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:03:48,979 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 [2022-03-03 18:03:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:48,980 INFO L225 Difference]: With dead ends: 1428 [2022-03-03 18:03:48,980 INFO L226 Difference]: Without dead ends: 1330 [2022-03-03 18:03:48,981 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 [2022-03-03 18:03:48,981 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 307 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:48,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2750 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:03:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-03-03 18:03:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1227. [2022-03-03 18:03:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.50489396411093) internal successors, (3071), 1226 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3071 transitions. [2022-03-03 18:03:48,993 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3071 transitions. Word has length 79 [2022-03-03 18:03:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:48,993 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3071 transitions. [2022-03-03 18:03:48,993 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) [2022-03-03 18:03:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3071 transitions. [2022-03-03 18:03:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:48,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:48,994 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] [2022-03-03 18:03:48,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-03-03 18:03:48,994 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 8830956, now seen corresponding path program 344 times [2022-03-03 18:03:48,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:48,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912943945] [2022-03-03 18:03:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:49,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:49,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912943945] [2022-03-03 18:03:49,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912943945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:49,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:49,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:49,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782129035] [2022-03-03 18:03:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:49,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:49,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:49,330 INFO L87 Difference]: Start difference. First operand 1227 states and 3071 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) [2022-03-03 18:03:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:50,644 INFO L93 Difference]: Finished difference Result 1411 states and 3510 transitions. [2022-03-03 18:03:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:03:50,644 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 [2022-03-03 18:03:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:50,646 INFO L225 Difference]: With dead ends: 1411 [2022-03-03 18:03:50,646 INFO L226 Difference]: Without dead ends: 1298 [2022-03-03 18:03:50,646 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 [2022-03-03 18:03:50,646 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 310 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:50,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2659 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:03:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-03-03 18:03:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1215. [2022-03-03 18:03:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.5024711696869852) internal successors, (3038), 1214 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 3038 transitions. [2022-03-03 18:03:50,658 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 3038 transitions. Word has length 79 [2022-03-03 18:03:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:50,658 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 3038 transitions. [2022-03-03 18:03:50,658 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) [2022-03-03 18:03:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 3038 transitions. [2022-03-03 18:03:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:50,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:50,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:50,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-03-03 18:03:50,660 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 334279182, now seen corresponding path program 345 times [2022-03-03 18:03:50,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:50,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439925344] [2022-03-03 18:03:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:50,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:50,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439925344] [2022-03-03 18:03:50,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439925344] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:50,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:50,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:03:50,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308225306] [2022-03-03 18:03:50,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:50,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:03:50,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:03:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:03:50,994 INFO L87 Difference]: Start difference. First operand 1215 states and 3038 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) [2022-03-03 18:03:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:52,323 INFO L93 Difference]: Finished difference Result 1425 states and 3541 transitions. [2022-03-03 18:03:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:03:52,323 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 [2022-03-03 18:03:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:52,324 INFO L225 Difference]: With dead ends: 1425 [2022-03-03 18:03:52,325 INFO L226 Difference]: Without dead ends: 1275 [2022-03-03 18:03:52,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2719, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:03:52,325 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 311 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:52,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2677 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:03:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-03 18:03:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1211. [2022-03-03 18:03:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5016528925619834) internal successors, (3027), 1210 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3027 transitions. [2022-03-03 18:03:52,336 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3027 transitions. Word has length 79 [2022-03-03 18:03:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:52,336 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3027 transitions. [2022-03-03 18:03:52,336 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) [2022-03-03 18:03:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3027 transitions. [2022-03-03 18:03:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:52,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:52,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:52,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-03-03 18:03:52,337 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1195861516, now seen corresponding path program 346 times [2022-03-03 18:03:52,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:52,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777097079] [2022-03-03 18:03:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:52,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:52,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:52,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777097079] [2022-03-03 18:03:52,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777097079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:52,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:52,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:52,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616402716] [2022-03-03 18:03:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:52,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:52,648 INFO L87 Difference]: Start difference. First operand 1211 states and 3027 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) [2022-03-03 18:03:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:53,711 INFO L93 Difference]: Finished difference Result 1349 states and 3348 transitions. [2022-03-03 18:03:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 18:03:53,712 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 [2022-03-03 18:03:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:53,713 INFO L225 Difference]: With dead ends: 1349 [2022-03-03 18:03:53,713 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 18:03:53,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:03:53,714 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 292 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:53,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2278 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 18:03:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1175. [2022-03-03 18:03:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.5110732538330494) internal successors, (2948), 1174 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2948 transitions. [2022-03-03 18:03:53,724 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2948 transitions. Word has length 79 [2022-03-03 18:03:53,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:53,724 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2948 transitions. [2022-03-03 18:03:53,724 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) [2022-03-03 18:03:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2948 transitions. [2022-03-03 18:03:53,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:53,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:53,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-03-03 18:03:53,726 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash -448915766, now seen corresponding path program 347 times [2022-03-03 18:03:53,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:53,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344950262] [2022-03-03 18:03:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:54,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:54,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344950262] [2022-03-03 18:03:54,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344950262] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:54,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:54,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:54,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760132460] [2022-03-03 18:03:54,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:54,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:54,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:54,035 INFO L87 Difference]: Start difference. First operand 1175 states and 2948 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) [2022-03-03 18:03:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:55,177 INFO L93 Difference]: Finished difference Result 1397 states and 3484 transitions. [2022-03-03 18:03:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:03:55,177 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 [2022-03-03 18:03:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:55,179 INFO L225 Difference]: With dead ends: 1397 [2022-03-03 18:03:55,179 INFO L226 Difference]: Without dead ends: 1267 [2022-03-03 18:03:55,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:03:55,179 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 283 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:55,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2452 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:03:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-03 18:03:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1199. [2022-03-03 18:03:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5091819699499167) internal successors, (3006), 1198 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 3006 transitions. [2022-03-03 18:03:55,190 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 3006 transitions. Word has length 79 [2022-03-03 18:03:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:55,190 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 3006 transitions. [2022-03-03 18:03:55,190 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) [2022-03-03 18:03:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 3006 transitions. [2022-03-03 18:03:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:55,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:55,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:55,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-03-03 18:03:55,191 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1302306932, now seen corresponding path program 348 times [2022-03-03 18:03:55,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:55,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050259774] [2022-03-03 18:03:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:55,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:55,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050259774] [2022-03-03 18:03:55,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050259774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:55,503 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:55,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:55,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456729277] [2022-03-03 18:03:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:55,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:55,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:55,503 INFO L87 Difference]: Start difference. First operand 1199 states and 3006 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) [2022-03-03 18:03:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:56,584 INFO L93 Difference]: Finished difference Result 1376 states and 3420 transitions. [2022-03-03 18:03:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 18:03:56,584 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 [2022-03-03 18:03:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:56,586 INFO L225 Difference]: With dead ends: 1376 [2022-03-03 18:03:56,586 INFO L226 Difference]: Without dead ends: 1278 [2022-03-03 18:03:56,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 18:03:56,586 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 285 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:56,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2465 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-03 18:03:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1203. [2022-03-03 18:03:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5066555740432612) internal successors, (3013), 1202 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3013 transitions. [2022-03-03 18:03:56,600 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3013 transitions. Word has length 79 [2022-03-03 18:03:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:56,600 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3013 transitions. [2022-03-03 18:03:56,600 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) [2022-03-03 18:03:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3013 transitions. [2022-03-03 18:03:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:56,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:56,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:56,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-03-03 18:03:56,602 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -588069654, now seen corresponding path program 349 times [2022-03-03 18:03:56,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:56,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146078173] [2022-03-03 18:03:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:56,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:56,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146078173] [2022-03-03 18:03:56,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146078173] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:56,915 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:56,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:56,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40179916] [2022-03-03 18:03:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:56,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:56,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:56,916 INFO L87 Difference]: Start difference. First operand 1203 states and 3013 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) [2022-03-03 18:03:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:57,994 INFO L93 Difference]: Finished difference Result 1344 states and 3336 transitions. [2022-03-03 18:03:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:03:57,994 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 [2022-03-03 18:03:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:57,996 INFO L225 Difference]: With dead ends: 1344 [2022-03-03 18:03:57,996 INFO L226 Difference]: Without dead ends: 1231 [2022-03-03 18:03:57,996 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 [2022-03-03 18:03:57,996 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 275 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:57,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2451 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:03:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-03 18:03:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1191. [2022-03-03 18:03:58,014 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) [2022-03-03 18:03:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2984 transitions. [2022-03-03 18:03:58,015 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2984 transitions. Word has length 79 [2022-03-03 18:03:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:58,015 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2984 transitions. [2022-03-03 18:03:58,015 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) [2022-03-03 18:03:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2984 transitions. [2022-03-03 18:03:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:03:58,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:58,016 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] [2022-03-03 18:03:58,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-03-03 18:03:58,016 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1287421830, now seen corresponding path program 350 times [2022-03-03 18:03:58,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:58,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58596991] [2022-03-03 18:03:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:58,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:58,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58596991] [2022-03-03 18:03:58,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58596991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:03:58,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:03:58,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:03:58,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055531159] [2022-03-03 18:03:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:03:58,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:03:58,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:03:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:03:58,333 INFO L87 Difference]: Start difference. First operand 1191 states and 2984 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) [2022-03-03 18:04:00,577 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 [] [2022-03-03 18:04:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:04:01,422 INFO L93 Difference]: Finished difference Result 1366 states and 3384 transitions. [2022-03-03 18:04:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:04:01,422 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 [2022-03-03 18:04:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:04:01,424 INFO L225 Difference]: With dead ends: 1366 [2022-03-03 18:04:01,424 INFO L226 Difference]: Without dead ends: 1215 [2022-03-03 18:04:01,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 18:04:01,424 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 296 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:04:01,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2370 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-03-03 18:04:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-03 18:04:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1175. [2022-03-03 18:04:01,433 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) [2022-03-03 18:04:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-03-03 18:04:01,434 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-03-03 18:04:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:04:01,435 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-03-03 18:04:01,435 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) [2022-03-03 18:04:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-03-03 18:04:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:04:01,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:04:01,436 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] [2022-03-03 18:04:01,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-03-03 18:04:01,436 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:04:01,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:04:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash -836921466, now seen corresponding path program 351 times [2022-03-03 18:04:01,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:04:01,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302675288] [2022-03-03 18:04:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:04:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:04:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:04:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:04:01,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:04:01,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302675288] [2022-03-03 18:04:01,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302675288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:04:01,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:04:01,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:04:01,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999374675] [2022-03-03 18:04:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:04:01,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:04:01,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:04:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:04:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:04:01,764 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 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) [2022-03-03 18:04:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:04:03,091 INFO L93 Difference]: Finished difference Result 1358 states and 3366 transitions. [2022-03-03 18:04:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:04:03,092 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 [2022-03-03 18:04:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:04:03,093 INFO L225 Difference]: With dead ends: 1358 [2022-03-03 18:04:03,094 INFO L226 Difference]: Without dead ends: 1223 [2022-03-03 18:04:03,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:04:03,094 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 275 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:04:03,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2731 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:04:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-03 18:04:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1175. [2022-03-03 18:04:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.5008517887563886) internal successors, (2936), 1174 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:04:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2936 transitions. [2022-03-03 18:04:03,105 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2936 transitions. Word has length 79 [2022-03-03 18:04:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:04:03,105 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2936 transitions. [2022-03-03 18:04:03,105 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) [2022-03-03 18:04:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2936 transitions. [2022-03-03 18:04:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:04:03,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:04:03,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:04:03,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-03-03 18:04:03,106 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:04:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:04:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1967436496, now seen corresponding path program 352 times [2022-03-03 18:04:03,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:04:03,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784728268] [2022-03-03 18:04:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:04:03,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:04:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:04:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:04:03,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:04:03,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784728268] [2022-03-03 18:04:03,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784728268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:04:03,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:04:03,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 18:04:03,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998083279] [2022-03-03 18:04:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:04:03,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:04:03,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:04:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:04:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:04:03,422 INFO L87 Difference]: Start difference. First operand 1175 states and 2936 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) [2022-03-03 18:04:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:04:04,388 INFO L93 Difference]: Finished difference Result 1361 states and 3368 transitions. [2022-03-03 18:04:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:04:04,388 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 [2022-03-03 18:04:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:04:04,390 INFO L225 Difference]: With dead ends: 1361 [2022-03-03 18:04:04,390 INFO L226 Difference]: Without dead ends: 1183 [2022-03-03 18:04:04,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:04:04,390 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 278 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:04:04,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2481 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:04:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-03 18:04:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1155. [2022-03-03 18:04:04,399 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) [2022-03-03 18:04:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2897 transitions. [2022-03-03 18:04:04,400 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2897 transitions. Word has length 79 [2022-03-03 18:04:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:04:04,401 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2897 transitions. [2022-03-03 18:04:04,401 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) [2022-03-03 18:04:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2897 transitions. [2022-03-03 18:04:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:04:04,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:04:04,402 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] [2022-03-03 18:04:04,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-03-03 18:04:04,402 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:04:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:04:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1103048232, now seen corresponding path program 353 times [2022-03-03 18:04:04,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:04:04,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245097351] [2022-03-03 18:04:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:04:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:04:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:04:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:04:04,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:04:04,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245097351] [2022-03-03 18:04:04,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245097351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:04:04,741 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:04:04,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:04:04,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619569144] [2022-03-03 18:04:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:04:04,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:04:04,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:04:04,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:04:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:04:04,741 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) [2022-03-03 18:04:07,004 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 [] [2022-03-03 18:04:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:04:08,190 INFO L93 Difference]: Finished difference Result 1381 states and 3448 transitions. [2022-03-03 18:04:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:04:08,190 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 [2022-03-03 18:04:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:04:08,192 INFO L225 Difference]: With dead ends: 1381 [2022-03-03 18:04:08,192 INFO L226 Difference]: Without dead ends: 1251 [2022-03-03 18:04:08,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:04:08,193 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 358 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:04:08,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2721 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:04:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-03 18:04:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1167. [2022-03-03 18:04:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.5060034305317322) internal successors, (2922), 1166 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) [2022-03-03 18:04:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2922 transitions. [2022-03-03 18:04:08,203 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2922 transitions. Word has length 79 [2022-03-03 18:04:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:04:08,204 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2922 transitions. [2022-03-03 18:04:08,204 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) [2022-03-03 18:04:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2922 transitions. [2022-03-03 18:04:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 18:04:08,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:04:08,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:04:08,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-03-03 18:04:08,205 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:04:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:04:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash 249657066, now seen corresponding path program 354 times [2022-03-03 18:04:08,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:04:08,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612727297] [2022-03-03 18:04:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:04:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:04:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:04:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:04:08,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:04:08,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612727297] [2022-03-03 18:04:08,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612727297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:04:08,536 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:04:08,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 18:04:08,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875123654] [2022-03-03 18:04:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:04:08,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 18:04:08,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:04:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 18:04:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:04:08,536 INFO L87 Difference]: Start difference. First operand 1167 states and 2922 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) Received shutdown request... [2022-03-03 18:04:10,098 WARN L244 SmtUtils]: Removed 4 from assertion stack [2022-03-03 18:04:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 18:04:10,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:04:10,098 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 137 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:04:10,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1410 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 18:04:10,099 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 18:04:10,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-03-03 18:04:10,100 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1167states) and FLOYD_HOARE automaton (currently 23 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 4ms.. [2022-03-03 18:04:10,101 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 18:04:10,101 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 18:04:10,104 INFO L732 BasicCegarLoop]: Path program histogram: [354] [2022-03-03 18:04:10,105 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 18:04:10,105 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 18:04:10,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:04:10 BasicIcfg [2022-03-03 18:04:10,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 18:04:10,109 INFO L158 Benchmark]: Toolchain (without parser) took 757293.27ms. Allocated memory was 175.1MB in the beginning and 286.3MB in the end (delta: 111.1MB). Free memory was 116.8MB in the beginning and 156.5MB in the end (delta: -39.8MB). Peak memory consumption was 72.3MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,109 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 175.1MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:04:10,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.85ms. Allocated memory was 175.1MB in the beginning and 238.0MB in the end (delta: 62.9MB). Free memory was 116.5MB in the beginning and 211.8MB in the end (delta: -95.3MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.50ms. Allocated memory is still 238.0MB. Free memory was 211.8MB in the beginning and 209.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,109 INFO L158 Benchmark]: Boogie Preprocessor took 25.14ms. Allocated memory is still 238.0MB. Free memory was 209.7MB in the beginning and 208.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,109 INFO L158 Benchmark]: RCFGBuilder took 288.31ms. Allocated memory is still 238.0MB. Free memory was 208.7MB in the beginning and 196.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,119 INFO L158 Benchmark]: TraceAbstraction took 756705.08ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 195.6MB in the beginning and 156.5MB in the end (delta: 39.0MB). Peak memory consumption was 88.3MB. Max. memory is 8.0GB. [2022-03-03 18:04:10,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 175.1MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.85ms. Allocated memory was 175.1MB in the beginning and 238.0MB in the end (delta: 62.9MB). Free memory was 116.5MB in the beginning and 211.8MB in the end (delta: -95.3MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.50ms. Allocated memory is still 238.0MB. Free memory was 211.8MB in the beginning and 209.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.14ms. Allocated memory is still 238.0MB. Free memory was 209.7MB in the beginning and 208.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 288.31ms. Allocated memory is still 238.0MB. Free memory was 208.7MB in the beginning and 196.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 756705.08ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 195.6MB in the beginning and 156.5MB in the end (delta: 39.0MB). Peak memory consumption was 88.3MB. 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 (1167states) and FLOYD_HOARE automaton (currently 23 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 4ms.. - 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 (1167states) and FLOYD_HOARE automaton (currently 23 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 4ms.. - 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 (1167states) and FLOYD_HOARE automaton (currently 23 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 756.6s, OverallIterations: 354, TraceHistogramMax: 1, PathProgramHistogramMax: 354, EmptinessCheckTime: 0.5s, AutomataDifference: 627.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 49 mSolverCounterUnknown, 109533 SdHoareTripleChecker+Valid, 418.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109533 mSDsluCounter, 959356 SdHoareTripleChecker+Invalid, 388.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 941951 mSDsCounter, 12252 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 368932 IncrementalHoareTripleChecker+Invalid, 381233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12252 mSolverCounterUnsat, 64191 mSDtfsCounter, 368932 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19246 GetRequests, 735 SyntacticMatches, 936 SemanticMatches, 17574 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196093 ImplicationChecksByTransitivity, 282.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1259occurred in iteration=332, InterpolantAutomatonStates: 14602, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 353 MinimizatonAttempts, 34917 StatesRemovedByMinimization, 350 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 119.9s InterpolantComputationTime, 27966 NumberOfCodeBlocks, 27966 NumberOfCodeBlocksAsserted, 354 NumberOfCheckSat, 27612 ConstructedInterpolants, 0 QuantifiedInterpolants, 347627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 354 InterpolantComputations, 354 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