/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-c7b2d19 [2022-03-15 14:39:12,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:39:12,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:39:12,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 14:39:12,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:39:12,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:39:12,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:39:12,166 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 [2022-03-15 14:39:12,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:39:12,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:39:12,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:39:12,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:39:12,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:39:12,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:39:12,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:39:12,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:39:12,200 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:39:12,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:39:12,201 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:39:12,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:39:12,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:39:12,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:39:12,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:39:12,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:39:12,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:39:12,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:39:12,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:39:12,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:39:12,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:39:12,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:39:12,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:39:12,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:39:12,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:39:12,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:39:12,444 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:39:12,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-15 14:39:12,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d95c3ee00/e8146292804649e78d33602fbceef667/FLAG04d451f5c [2022-03-15 14:39:12,956 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:39:12,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-03-15 14:39:12,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d95c3ee00/e8146292804649e78d33602fbceef667/FLAG04d451f5c [2022-03-15 14:39:12,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d95c3ee00/e8146292804649e78d33602fbceef667 [2022-03-15 14:39:12,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:39:12,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:39:12,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:39:12,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:39:12,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:39:12,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:39:12" (1/1) ... [2022-03-15 14:39:12,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4243bbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:12, skipping insertion in model container [2022-03-15 14:39:12,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:39:12" (1/1) ... [2022-03-15 14:39:13,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:39:13,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:39:13,253 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] [2022-03-15 14:39:13,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:39:13,262 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:39:13,286 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] [2022-03-15 14:39:13,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:39:13,305 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:39:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13 WrapperNode [2022-03-15 14:39:13,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:39:13,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:39:13,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:39:13,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:39:13,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,339 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-03-15 14:39:13,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:39:13,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:39:13,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:39:13,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:39:13,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:39:13,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:39:13,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:39:13,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:39:13,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (1/1) ... [2022-03-15 14:39:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:39:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:13,404 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) [2022-03-15 14:39:13,419 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 [2022-03-15 14:39:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:39:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:39:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:39:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:39:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:39:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:39:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:39:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:39:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:39:13,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:39:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:39:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:39:13,448 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:39:13,534 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:39:13,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:39:13,691 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:39:13,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:39:13,697 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 14:39:13,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:39:13 BoogieIcfgContainer [2022-03-15 14:39:13,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:39:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:39:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:39:13,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:39:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:39:12" (1/3) ... [2022-03-15 14:39:13,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360f29ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:39:13, skipping insertion in model container [2022-03-15 14:39:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:39:13" (2/3) ... [2022-03-15 14:39:13,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360f29ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:39:13, skipping insertion in model container [2022-03-15 14:39:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:39:13" (3/3) ... [2022-03-15 14:39:13,706 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-03-15 14:39:13,710 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:39:13,710 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:39:13,710 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:39:13,710 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:39:13,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,763 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,763 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,770 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,771 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:39:13,786 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:39:13,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:39:13,843 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 [2022-03-15 14:39:13,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:39:13,860 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 94 transitions, 204 flow [2022-03-15 14:39:13,946 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) [2022-03-15 14:39:13,951 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) [2022-03-15 14:39:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:13,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:13,976 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] [2022-03-15 14:39:13,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash -434209664, now seen corresponding path program 1 times [2022-03-15 14:39:13,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:13,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058786322] [2022-03-15 14:39:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:13,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:15,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:15,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058786322] [2022-03-15 14:39:15,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058786322] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:15,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:15,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:15,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082151289] [2022-03-15 14:39:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:15,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:15,203 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) [2022-03-15 14:39:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:16,609 INFO L93 Difference]: Finished difference Result 1343 states and 3319 transitions. [2022-03-15 14:39:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:39:16,611 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 [2022-03-15 14:39:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:16,634 INFO L225 Difference]: With dead ends: 1343 [2022-03-15 14:39:16,635 INFO L226 Difference]: Without dead ends: 1210 [2022-03-15 14:39:16,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:39:16,641 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-15 14:39:16,642 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] [2022-03-15 14:39:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-15 14:39:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2022-03-15 14:39:16,725 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) [2022-03-15 14:39:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2867 transitions. [2022-03-15 14:39:16,730 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2867 transitions. Word has length 79 [2022-03-15 14:39:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:16,731 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2867 transitions. [2022-03-15 14:39:16,731 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) [2022-03-15 14:39:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2867 transitions. [2022-03-15 14:39:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:16,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:16,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:16,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:39:16,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -801104094, now seen corresponding path program 2 times [2022-03-15 14:39:16,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:16,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881162555] [2022-03-15 14:39:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:17,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:17,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881162555] [2022-03-15 14:39:17,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881162555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:17,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:17,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:17,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988900365] [2022-03-15 14:39:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:17,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:17,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:17,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:17,322 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) [2022-03-15 14:39:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:18,513 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-03-15 14:39:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:39:18,513 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 [2022-03-15 14:39:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:18,520 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:39:18,520 INFO L226 Difference]: Without dead ends: 1237 [2022-03-15 14:39:18,521 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 [2022-03-15 14:39:18,522 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 [2022-03-15 14:39:18,522 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] [2022-03-15 14:39:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-15 14:39:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1158. [2022-03-15 14:39:18,551 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) [2022-03-15 14:39:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2874 transitions. [2022-03-15 14:39:18,555 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2874 transitions. Word has length 79 [2022-03-15 14:39:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:18,556 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2874 transitions. [2022-03-15 14:39:18,556 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) [2022-03-15 14:39:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2874 transitions. [2022-03-15 14:39:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:18,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:18,560 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] [2022-03-15 14:39:18,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:39:18,560 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -86866816, now seen corresponding path program 3 times [2022-03-15 14:39:18,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:18,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414462897] [2022-03-15 14:39:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:19,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:19,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414462897] [2022-03-15 14:39:19,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414462897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:19,044 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:19,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:19,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827730054] [2022-03-15 14:39:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:19,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:19,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:19,046 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) [2022-03-15 14:39:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:20,210 INFO L93 Difference]: Finished difference Result 1303 states and 3212 transitions. [2022-03-15 14:39:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:20,210 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 [2022-03-15 14:39:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:20,216 INFO L225 Difference]: With dead ends: 1303 [2022-03-15 14:39:20,216 INFO L226 Difference]: Without dead ends: 1190 [2022-03-15 14:39:20,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:39:20,218 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 [2022-03-15 14:39:20,218 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] [2022-03-15 14:39:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-15 14:39:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1146. [2022-03-15 14:39:20,243 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) [2022-03-15 14:39:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2845 transitions. [2022-03-15 14:39:20,247 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2845 transitions. Word has length 79 [2022-03-15 14:39:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:20,247 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2845 transitions. [2022-03-15 14:39:20,248 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) [2022-03-15 14:39:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2845 transitions. [2022-03-15 14:39:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:20,250 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:20,251 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] [2022-03-15 14:39:20,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:39:20,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash 383823998, now seen corresponding path program 4 times [2022-03-15 14:39:20,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:20,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738008740] [2022-03-15 14:39:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:20,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:20,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738008740] [2022-03-15 14:39:20,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738008740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:20,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:20,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:20,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933517310] [2022-03-15 14:39:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:20,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:20,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:20,685 INFO L87 Difference]: Start difference. First operand 1146 states and 2845 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:21,904 INFO L93 Difference]: Finished difference Result 1353 states and 3337 transitions. [2022-03-15 14:39:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:39:21,905 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 [2022-03-15 14:39:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:21,910 INFO L225 Difference]: With dead ends: 1353 [2022-03-15 14:39:21,910 INFO L226 Difference]: Without dead ends: 1255 [2022-03-15 14:39:21,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:39:21,912 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 266 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-15 14:39:21,912 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] [2022-03-15 14:39:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-15 14:39:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1170. [2022-03-15 14:39:21,938 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) [2022-03-15 14:39:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-03-15 14:39:21,942 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-03-15 14:39:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:21,942 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-03-15 14:39:21,943 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) [2022-03-15 14:39:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-03-15 14:39:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:21,945 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:21,946 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] [2022-03-15 14:39:21,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:39:21,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash -370005702, now seen corresponding path program 5 times [2022-03-15 14:39:21,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:21,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969815522] [2022-03-15 14:39:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:22,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:22,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969815522] [2022-03-15 14:39:22,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969815522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:22,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:22,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:22,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994245117] [2022-03-15 14:39:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:22,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:22,349 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) [2022-03-15 14:39:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:23,385 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-03-15 14:39:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:23,385 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 [2022-03-15 14:39:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:23,393 INFO L225 Difference]: With dead ends: 1321 [2022-03-15 14:39:23,393 INFO L226 Difference]: Without dead ends: 1170 [2022-03-15 14:39:23,394 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 [2022-03-15 14:39:23,397 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 [2022-03-15 14:39:23,397 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] [2022-03-15 14:39:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-03-15 14:39:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1130. [2022-03-15 14:39:23,423 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) [2022-03-15 14:39:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2801 transitions. [2022-03-15 14:39:23,426 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2801 transitions. Word has length 79 [2022-03-15 14:39:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:23,427 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2801 transitions. [2022-03-15 14:39:23,428 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) [2022-03-15 14:39:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2801 transitions. [2022-03-15 14:39:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:23,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:23,436 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] [2022-03-15 14:39:23,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:39:23,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash -501141252, now seen corresponding path program 6 times [2022-03-15 14:39:23,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:23,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446410426] [2022-03-15 14:39:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:23,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:23,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446410426] [2022-03-15 14:39:23,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446410426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:23,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:23,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:23,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658574751] [2022-03-15 14:39:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:23,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:23,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:23,933 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) [2022-03-15 14:39:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:25,406 INFO L93 Difference]: Finished difference Result 1388 states and 3423 transitions. [2022-03-15 14:39:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:39:25,406 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 [2022-03-15 14:39:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:25,411 INFO L225 Difference]: With dead ends: 1388 [2022-03-15 14:39:25,412 INFO L226 Difference]: Without dead ends: 1290 [2022-03-15 14:39:25,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:39:25,413 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 [2022-03-15 14:39:25,414 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] [2022-03-15 14:39:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-15 14:39:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2022-03-15 14:39:25,441 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) [2022-03-15 14:39:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-15 14:39:25,444 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-15 14:39:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:25,445 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-15 14:39:25,445 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) [2022-03-15 14:39:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-15 14:39:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:25,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:25,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:25,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:39:25,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1254970952, now seen corresponding path program 7 times [2022-03-15 14:39:25,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:25,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614143508] [2022-03-15 14:39:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:25,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:25,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614143508] [2022-03-15 14:39:25,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614143508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:25,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:25,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:25,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754678357] [2022-03-15 14:39:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:25,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:25,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:25,841 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) [2022-03-15 14:39:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:26,990 INFO L93 Difference]: Finished difference Result 1344 states and 3306 transitions. [2022-03-15 14:39:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:39:26,991 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 [2022-03-15 14:39:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:26,996 INFO L225 Difference]: With dead ends: 1344 [2022-03-15 14:39:26,996 INFO L226 Difference]: Without dead ends: 1209 [2022-03-15 14:39:26,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:39:26,997 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 [2022-03-15 14:39:26,998 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] [2022-03-15 14:39:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-03-15 14:39:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1134. [2022-03-15 14:39:27,019 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) [2022-03-15 14:39:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-03-15 14:39:27,022 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-03-15 14:39:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:27,022 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-03-15 14:39:27,022 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) [2022-03-15 14:39:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-03-15 14:39:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:27,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:27,025 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] [2022-03-15 14:39:27,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 14:39:27,025 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -315123390, now seen corresponding path program 8 times [2022-03-15 14:39:27,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:27,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237189965] [2022-03-15 14:39:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:27,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:27,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237189965] [2022-03-15 14:39:27,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237189965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:27,391 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:27,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:27,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938360902] [2022-03-15 14:39:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:27,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:27,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:27,392 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) [2022-03-15 14:39:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:28,255 INFO L93 Difference]: Finished difference Result 1332 states and 3273 transitions. [2022-03-15 14:39:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:28,256 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 [2022-03-15 14:39:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:28,259 INFO L225 Difference]: With dead ends: 1332 [2022-03-15 14:39:28,259 INFO L226 Difference]: Without dead ends: 1162 [2022-03-15 14:39:28,260 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 [2022-03-15 14:39:28,260 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 [2022-03-15 14:39:28,260 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] [2022-03-15 14:39:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-15 14:39:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1122. [2022-03-15 14:39:28,279 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) [2022-03-15 14:39:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2779 transitions. [2022-03-15 14:39:28,282 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2779 transitions. Word has length 79 [2022-03-15 14:39:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:28,283 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2779 transitions. [2022-03-15 14:39:28,283 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) [2022-03-15 14:39:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2779 transitions. [2022-03-15 14:39:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:28,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:28,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:28,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 14:39:28,286 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -813841404, now seen corresponding path program 9 times [2022-03-15 14:39:28,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:28,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972635152] [2022-03-15 14:39:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:28,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:28,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972635152] [2022-03-15 14:39:28,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972635152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:28,672 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:28,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:28,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716711686] [2022-03-15 14:39:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:28,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:28,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:28,673 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) [2022-03-15 14:39:31,731 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 [] [2022-03-15 14:39:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:31,973 INFO L93 Difference]: Finished difference Result 1466 states and 3579 transitions. [2022-03-15 14:39:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:39:31,974 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 [2022-03-15 14:39:31,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:31,979 INFO L225 Difference]: With dead ends: 1466 [2022-03-15 14:39:31,979 INFO L226 Difference]: Without dead ends: 1368 [2022-03-15 14:39:31,980 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 [2022-03-15 14:39:31,980 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, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:31,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2802 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:39:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2022-03-15 14:39:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1146. [2022-03-15 14:39:32,000 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) [2022-03-15 14:39:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2841 transitions. [2022-03-15 14:39:32,003 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2841 transitions. Word has length 79 [2022-03-15 14:39:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:32,004 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2841 transitions. [2022-03-15 14:39:32,004 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) [2022-03-15 14:39:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2841 transitions. [2022-03-15 14:39:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:32,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:32,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:32,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 14:39:32,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -99604126, now seen corresponding path program 10 times [2022-03-15 14:39:32,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:32,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592354576] [2022-03-15 14:39:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:32,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:32,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592354576] [2022-03-15 14:39:32,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592354576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:32,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:32,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:32,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26333368] [2022-03-15 14:39:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:32,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:32,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:32,424 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) [2022-03-15 14:39:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:33,610 INFO L93 Difference]: Finished difference Result 1370 states and 3365 transitions. [2022-03-15 14:39:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:39:33,611 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 [2022-03-15 14:39:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:33,614 INFO L225 Difference]: With dead ends: 1370 [2022-03-15 14:39:33,614 INFO L226 Difference]: Without dead ends: 1219 [2022-03-15 14:39:33,615 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 [2022-03-15 14:39:33,616 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 [2022-03-15 14:39:33,616 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] [2022-03-15 14:39:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-15 14:39:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1146. [2022-03-15 14:39:33,650 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) [2022-03-15 14:39:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-03-15 14:39:33,653 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-03-15 14:39:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:33,653 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-03-15 14:39:33,653 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) [2022-03-15 14:39:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-03-15 14:39:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:33,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:33,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:33,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 14:39:33,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1359290628, now seen corresponding path program 11 times [2022-03-15 14:39:33,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:33,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54084358] [2022-03-15 14:39:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:34,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:34,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54084358] [2022-03-15 14:39:34,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54084358] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:34,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:34,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:34,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681909758] [2022-03-15 14:39:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:34,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:34,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:34,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:34,022 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) [2022-03-15 14:39:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:34,902 INFO L93 Difference]: Finished difference Result 1330 states and 3255 transitions. [2022-03-15 14:39:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:39:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:34,905 INFO L225 Difference]: With dead ends: 1330 [2022-03-15 14:39:34,906 INFO L226 Difference]: Without dead ends: 1134 [2022-03-15 14:39:34,906 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 [2022-03-15 14:39:34,907 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 [2022-03-15 14:39:34,907 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] [2022-03-15 14:39:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-03-15 14:39:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1106. [2022-03-15 14:39:34,925 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) [2022-03-15 14:39:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 2735 transitions. [2022-03-15 14:39:34,928 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 2735 transitions. Word has length 79 [2022-03-15 14:39:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:34,929 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 2735 transitions. [2022-03-15 14:39:34,929 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) [2022-03-15 14:39:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 2735 transitions. [2022-03-15 14:39:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:34,931 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:34,932 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] [2022-03-15 14:39:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 14:39:34,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:34,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1511153852, now seen corresponding path program 12 times [2022-03-15 14:39:34,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:34,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458378433] [2022-03-15 14:39:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:35,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:35,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458378433] [2022-03-15 14:39:35,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458378433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:35,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:35,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:39:35,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085213560] [2022-03-15 14:39:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:35,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:39:35,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:39:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:39:35,372 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) [2022-03-15 14:39:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:36,774 INFO L93 Difference]: Finished difference Result 1433 states and 3528 transitions. [2022-03-15 14:39:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:39:36,774 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 [2022-03-15 14:39:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:36,778 INFO L225 Difference]: With dead ends: 1433 [2022-03-15 14:39:36,778 INFO L226 Difference]: Without dead ends: 1335 [2022-03-15 14:39:36,779 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 [2022-03-15 14:39:36,780 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 [2022-03-15 14:39:36,780 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] [2022-03-15 14:39:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-03-15 14:39:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2022-03-15 14:39:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-15 14:39:36,802 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-15 14:39:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:36,802 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-15 14:39:36,803 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) [2022-03-15 14:39:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-15 14:39:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:36,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:36,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:36,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 14:39:36,805 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2029983744, now seen corresponding path program 13 times [2022-03-15 14:39:36,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:36,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189045764] [2022-03-15 14:39:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:37,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:37,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189045764] [2022-03-15 14:39:37,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189045764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:37,216 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:37,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:39:37,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3147041] [2022-03-15 14:39:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:37,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:39:37,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:39:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:39:37,218 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) [2022-03-15 14:39:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:38,888 INFO L93 Difference]: Finished difference Result 1389 states and 3411 transitions. [2022-03-15 14:39:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:39:38,888 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 [2022-03-15 14:39:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:38,892 INFO L225 Difference]: With dead ends: 1389 [2022-03-15 14:39:38,892 INFO L226 Difference]: Without dead ends: 1254 [2022-03-15 14:39:38,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2734, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:39:38,893 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 [2022-03-15 14:39:38,894 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] [2022-03-15 14:39:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-15 14:39:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1134. [2022-03-15 14:39:38,911 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) [2022-03-15 14:39:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-15 14:39:38,914 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-15 14:39:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:38,914 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-15 14:39:38,914 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) [2022-03-15 14:39:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-15 14:39:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:38,917 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:38,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:38,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 14:39:38,917 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 661978180, now seen corresponding path program 14 times [2022-03-15 14:39:38,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:38,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880725383] [2022-03-15 14:39:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:39,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:39,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880725383] [2022-03-15 14:39:39,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880725383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:39,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:39,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:39,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619701126] [2022-03-15 14:39:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:39,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:39,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:39,316 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) [2022-03-15 14:39:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:40,547 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-15 14:39:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:39:40,548 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 [2022-03-15 14:39:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:40,553 INFO L225 Difference]: With dead ends: 1353 [2022-03-15 14:39:40,553 INFO L226 Difference]: Without dead ends: 1173 [2022-03-15 14:39:40,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:39:40,555 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 334 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:40,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2666 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:39:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-15 14:39:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1110. [2022-03-15 14:39:40,574 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) [2022-03-15 14:39:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2742 transitions. [2022-03-15 14:39:40,576 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2742 transitions. Word has length 79 [2022-03-15 14:39:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:40,576 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2742 transitions. [2022-03-15 14:39:40,576 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) [2022-03-15 14:39:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2742 transitions. [2022-03-15 14:39:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:40,579 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:40,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:40,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 14:39:40,579 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash 422865596, now seen corresponding path program 15 times [2022-03-15 14:39:40,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:40,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866718705] [2022-03-15 14:39:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:40,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:40,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866718705] [2022-03-15 14:39:40,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866718705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:40,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:40,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:40,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145340118] [2022-03-15 14:39:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:40,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:40,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:41,000 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) [2022-03-15 14:39:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:41,979 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-03-15 14:39:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:41,979 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 [2022-03-15 14:39:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:41,983 INFO L225 Difference]: With dead ends: 1353 [2022-03-15 14:39:41,983 INFO L226 Difference]: Without dead ends: 1126 [2022-03-15 14:39:41,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:39:41,985 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 [2022-03-15 14:39:41,985 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] [2022-03-15 14:39:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-03-15 14:39:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2022-03-15 14:39:42,002 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) [2022-03-15 14:39:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2713 transitions. [2022-03-15 14:39:42,005 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2713 transitions. Word has length 79 [2022-03-15 14:39:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:42,005 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 2713 transitions. [2022-03-15 14:39:42,005 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) [2022-03-15 14:39:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2713 transitions. [2022-03-15 14:39:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:42,007 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:42,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:42,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 14:39:42,008 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1890744956, now seen corresponding path program 16 times [2022-03-15 14:39:42,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:42,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991780527] [2022-03-15 14:39:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:42,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:42,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991780527] [2022-03-15 14:39:42,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991780527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:42,394 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:42,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:39:42,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017403102] [2022-03-15 14:39:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:39:42,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:39:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:39:42,395 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) [2022-03-15 14:39:45,543 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 [] [2022-03-15 14:39:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:46,665 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-15 14:39:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:39:46,665 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 [2022-03-15 14:39:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:46,669 INFO L225 Difference]: With dead ends: 1419 [2022-03-15 14:39:46,670 INFO L226 Difference]: Without dead ends: 1321 [2022-03-15 14:39:46,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=2532, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:39:46,671 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 350 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:46,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 3275 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-15 14:39:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-03-15 14:39:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1170. [2022-03-15 14:39:46,688 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) [2022-03-15 14:39:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-03-15 14:39:46,691 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-03-15 14:39:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:46,691 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-03-15 14:39:46,691 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) [2022-03-15 14:39:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-03-15 14:39:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:46,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:46,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:46,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 14:39:46,694 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1136915256, now seen corresponding path program 17 times [2022-03-15 14:39:46,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:46,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082351947] [2022-03-15 14:39:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:46,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:47,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:47,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082351947] [2022-03-15 14:39:47,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082351947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:47,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:47,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:39:47,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933887173] [2022-03-15 14:39:47,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:47,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:39:47,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:39:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:39:47,074 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:48,416 INFO L93 Difference]: Finished difference Result 1387 states and 3393 transitions. [2022-03-15 14:39:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:39:48,417 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 [2022-03-15 14:39:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:48,420 INFO L225 Difference]: With dead ends: 1387 [2022-03-15 14:39:48,420 INFO L226 Difference]: Without dead ends: 1252 [2022-03-15 14:39:48,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=2433, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 14:39:48,421 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 339 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:48,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 3078 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:39:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-03-15 14:39:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1146. [2022-03-15 14:39:48,438 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) [2022-03-15 14:39:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-03-15 14:39:48,441 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-03-15 14:39:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:48,441 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-03-15 14:39:48,441 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) [2022-03-15 14:39:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-03-15 14:39:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:48,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:48,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:48,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 14:39:48,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:48,445 INFO L85 PathProgramCache]: Analyzing trace with hash -231090308, now seen corresponding path program 18 times [2022-03-15 14:39:48,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:48,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79004684] [2022-03-15 14:39:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:48,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:48,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79004684] [2022-03-15 14:39:48,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79004684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:48,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:48,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:39:48,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892975190] [2022-03-15 14:39:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:48,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:39:48,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:39:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:39:48,854 INFO L87 Difference]: Start difference. First operand 1146 states and 2837 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:50,064 INFO L93 Difference]: Finished difference Result 1363 states and 3327 transitions. [2022-03-15 14:39:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:39:50,065 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 [2022-03-15 14:39:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:50,068 INFO L225 Difference]: With dead ends: 1363 [2022-03-15 14:39:50,068 INFO L226 Difference]: Without dead ends: 1183 [2022-03-15 14:39:50,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=1978, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:39:50,069 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 323 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:50,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2844 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:39:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-15 14:39:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1122. [2022-03-15 14:39:50,087 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) [2022-03-15 14:39:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2771 transitions. [2022-03-15 14:39:50,090 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2771 transitions. Word has length 79 [2022-03-15 14:39:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:50,090 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2771 transitions. [2022-03-15 14:39:50,090 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) [2022-03-15 14:39:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2771 transitions. [2022-03-15 14:39:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:50,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:50,093 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] [2022-03-15 14:39:50,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 14:39:50,094 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:50,094 INFO L85 PathProgramCache]: Analyzing trace with hash 959444536, now seen corresponding path program 19 times [2022-03-15 14:39:50,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:50,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142648024] [2022-03-15 14:39:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:50,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:50,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142648024] [2022-03-15 14:39:50,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142648024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:50,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:50,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:39:50,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762354389] [2022-03-15 14:39:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:50,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:39:50,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:50,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:39:50,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:39:50,503 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) [2022-03-15 14:39:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:51,370 INFO L93 Difference]: Finished difference Result 1339 states and 3261 transitions. [2022-03-15 14:39:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:39:51,371 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 [2022-03-15 14:39:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:51,373 INFO L225 Difference]: With dead ends: 1339 [2022-03-15 14:39:51,373 INFO L226 Difference]: Without dead ends: 1098 [2022-03-15 14:39:51,373 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 [2022-03-15 14:39:51,374 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 297 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:51,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2774 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:51,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-15 14:39:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1082. [2022-03-15 14:39:51,389 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) [2022-03-15 14:39:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2669 transitions. [2022-03-15 14:39:51,392 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2669 transitions. Word has length 79 [2022-03-15 14:39:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:51,392 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 2669 transitions. [2022-03-15 14:39:51,393 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) [2022-03-15 14:39:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2669 transitions. [2022-03-15 14:39:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:51,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:51,396 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] [2022-03-15 14:39:51,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 14:39:51,396 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2065338564, now seen corresponding path program 20 times [2022-03-15 14:39:51,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:51,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354674095] [2022-03-15 14:39:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:51,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:51,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354674095] [2022-03-15 14:39:51,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354674095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:51,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:51,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:39:51,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742339688] [2022-03-15 14:39:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:51,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:39:51,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:39:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:39:51,774 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) [2022-03-15 14:39:55,266 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 [] [2022-03-15 14:39:57,942 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 [] [2022-03-15 14:39:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:58,652 INFO L93 Difference]: Finished difference Result 1463 states and 3598 transitions. [2022-03-15 14:39:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:39:58,653 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 [2022-03-15 14:39:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:58,656 INFO L225 Difference]: With dead ends: 1463 [2022-03-15 14:39:58,656 INFO L226 Difference]: Without dead ends: 1365 [2022-03-15 14:39:58,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=3507, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:39:58,657 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 395 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:58,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3292 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1304 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-03-15 14:39:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-03-15 14:39:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1158. [2022-03-15 14:39:58,676 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) [2022-03-15 14:39:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-03-15 14:39:58,679 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-03-15 14:39:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:58,679 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-03-15 14:39:58,679 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) [2022-03-15 14:39:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-03-15 14:39:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:39:58,681 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:58,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:58,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-15 14:39:58,682 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1475799032, now seen corresponding path program 21 times [2022-03-15 14:39:58,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:58,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650379386] [2022-03-15 14:39:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:59,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:59,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650379386] [2022-03-15 14:39:59,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650379386] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:39:59,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:39:59,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:39:59,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453298865] [2022-03-15 14:39:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:39:59,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:39:59,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:39:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:39:59,054 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) [2022-03-15 14:40:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:00,734 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-03-15 14:40:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:40:00,735 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 [2022-03-15 14:40:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:00,737 INFO L225 Difference]: With dead ends: 1419 [2022-03-15 14:40:00,737 INFO L226 Difference]: Without dead ends: 1284 [2022-03-15 14:40:00,738 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 [2022-03-15 14:40:00,739 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 356 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:00,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 3577 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:40:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-03-15 14:40:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1134. [2022-03-15 14:40:00,756 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) [2022-03-15 14:40:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-03-15 14:40:00,759 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-03-15 14:40:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:00,760 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-03-15 14:40:00,760 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) [2022-03-15 14:40:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-03-15 14:40:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:00,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:00,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:00,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-15 14:40:00,762 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash 107793468, now seen corresponding path program 22 times [2022-03-15 14:40:00,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:00,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778552899] [2022-03-15 14:40:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:01,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:01,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778552899] [2022-03-15 14:40:01,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778552899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:01,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:01,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:01,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104864167] [2022-03-15 14:40:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:01,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:01,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:01,165 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) [2022-03-15 14:40:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:02,449 INFO L93 Difference]: Finished difference Result 1383 states and 3382 transitions. [2022-03-15 14:40:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:40:02,449 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 [2022-03-15 14:40:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:02,452 INFO L225 Difference]: With dead ends: 1383 [2022-03-15 14:40:02,452 INFO L226 Difference]: Without dead ends: 1203 [2022-03-15 14:40:02,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=2639, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:40:02,453 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 331 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:02,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3344 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:40:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-15 14:40:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1110. [2022-03-15 14:40:02,467 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) [2022-03-15 14:40:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2738 transitions. [2022-03-15 14:40:02,470 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2738 transitions. Word has length 79 [2022-03-15 14:40:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:02,470 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2738 transitions. [2022-03-15 14:40:02,470 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) [2022-03-15 14:40:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2738 transitions. [2022-03-15 14:40:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:02,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:02,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:02,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-15 14:40:02,473 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1298328312, now seen corresponding path program 23 times [2022-03-15 14:40:02,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:02,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046956195] [2022-03-15 14:40:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:02,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:02,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046956195] [2022-03-15 14:40:02,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046956195] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:02,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:02,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:40:02,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710791407] [2022-03-15 14:40:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:02,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:40:02,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:40:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:40:02,838 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) [2022-03-15 14:40:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:03,836 INFO L93 Difference]: Finished difference Result 1347 states and 3283 transitions. [2022-03-15 14:40:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:40:03,837 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 [2022-03-15 14:40:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:03,839 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:40:03,839 INFO L226 Difference]: Without dead ends: 1122 [2022-03-15 14:40:03,840 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 [2022-03-15 14:40:03,840 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 320 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:03,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2652 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-03-15 14:40:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1086. [2022-03-15 14:40:03,857 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) [2022-03-15 14:40:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2676 transitions. [2022-03-15 14:40:03,860 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2676 transitions. Word has length 79 [2022-03-15 14:40:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:03,860 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2676 transitions. [2022-03-15 14:40:03,861 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) [2022-03-15 14:40:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2676 transitions. [2022-03-15 14:40:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:03,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:03,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:03,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-15 14:40:03,864 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash -77925144, now seen corresponding path program 24 times [2022-03-15 14:40:03,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:03,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373843946] [2022-03-15 14:40:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:04,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:04,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373843946] [2022-03-15 14:40:04,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373843946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:04,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:04,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:40:04,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674283854] [2022-03-15 14:40:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:04,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:40:04,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:40:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:40:04,250 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) [2022-03-15 14:40:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:05,209 INFO L93 Difference]: Finished difference Result 1374 states and 3351 transitions. [2022-03-15 14:40:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:40:05,220 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 [2022-03-15 14:40:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:05,222 INFO L225 Difference]: With dead ends: 1374 [2022-03-15 14:40:05,222 INFO L226 Difference]: Without dead ends: 1090 [2022-03-15 14:40:05,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:40:05,225 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 312 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:05,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2909 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:40:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-03-15 14:40:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1074. [2022-03-15 14:40:05,267 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) [2022-03-15 14:40:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2647 transitions. [2022-03-15 14:40:05,269 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2647 transitions. Word has length 79 [2022-03-15 14:40:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:05,270 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2647 transitions. [2022-03-15 14:40:05,270 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) [2022-03-15 14:40:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2647 transitions. [2022-03-15 14:40:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:05,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:05,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:05,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-15 14:40:05,272 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 370587076, now seen corresponding path program 25 times [2022-03-15 14:40:05,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:05,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707931823] [2022-03-15 14:40:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:05,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:05,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707931823] [2022-03-15 14:40:05,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707931823] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:05,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:05,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:05,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424147790] [2022-03-15 14:40:05,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:05,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:05,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:05,710 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) [2022-03-15 14:40:08,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:40:10,655 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 [] [2022-03-15 14:40:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:11,561 INFO L93 Difference]: Finished difference Result 1439 states and 3532 transitions. [2022-03-15 14:40:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:40:11,561 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 [2022-03-15 14:40:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:11,564 INFO L225 Difference]: With dead ends: 1439 [2022-03-15 14:40:11,564 INFO L226 Difference]: Without dead ends: 1341 [2022-03-15 14:40:11,564 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 [2022-03-15 14:40:11,565 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 395 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3337 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1312 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-03-15 14:40:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-03-15 14:40:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1138. [2022-03-15 14:40:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 2.4758135444151277) internal successors, (2815), 1137 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 2815 transitions. [2022-03-15 14:40:11,591 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 2815 transitions. Word has length 79 [2022-03-15 14:40:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:11,591 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 2815 transitions. [2022-03-15 14:40:11,591 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) [2022-03-15 14:40:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 2815 transitions. [2022-03-15 14:40:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:11,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:11,594 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] [2022-03-15 14:40:11,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-15 14:40:11,594 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash -383242624, now seen corresponding path program 26 times [2022-03-15 14:40:11,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:11,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439605385] [2022-03-15 14:40:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:11,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:11,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:11,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439605385] [2022-03-15 14:40:11,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439605385] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:11,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:11,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:11,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562791183] [2022-03-15 14:40:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:11,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:11,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:11,987 INFO L87 Difference]: Start difference. First operand 1138 states and 2815 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) [2022-03-15 14:40:14,974 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 [] [2022-03-15 14:40:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:15,474 INFO L93 Difference]: Finished difference Result 1435 states and 3521 transitions. [2022-03-15 14:40:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:40:15,474 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 [2022-03-15 14:40:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:15,477 INFO L225 Difference]: With dead ends: 1435 [2022-03-15 14:40:15,477 INFO L226 Difference]: Without dead ends: 1272 [2022-03-15 14:40:15,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=3062, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:40:15,478 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 349 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:15,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 3650 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1381 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:40:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-03-15 14:40:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1126. [2022-03-15 14:40:15,508 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) [2022-03-15 14:40:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2782 transitions. [2022-03-15 14:40:15,510 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2782 transitions. Word has length 79 [2022-03-15 14:40:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:15,510 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 2782 transitions. [2022-03-15 14:40:15,511 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) [2022-03-15 14:40:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2782 transitions. [2022-03-15 14:40:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:15,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:15,513 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] [2022-03-15 14:40:15,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-15 14:40:15,513 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1751248188, now seen corresponding path program 27 times [2022-03-15 14:40:15,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:15,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913780178] [2022-03-15 14:40:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:15,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:15,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913780178] [2022-03-15 14:40:15,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913780178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:15,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:15,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:15,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4519350] [2022-03-15 14:40:15,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:15,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:15,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:15,927 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) [2022-03-15 14:40:18,805 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 [] [2022-03-15 14:40:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:19,223 INFO L93 Difference]: Finished difference Result 1371 states and 3345 transitions. [2022-03-15 14:40:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:40:19,223 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 [2022-03-15 14:40:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:19,226 INFO L225 Difference]: With dead ends: 1371 [2022-03-15 14:40:19,226 INFO L226 Difference]: Without dead ends: 1191 [2022-03-15 14:40:19,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:40:19,227 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 367 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:19,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 3089 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1139 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:40:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-15 14:40:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1114. [2022-03-15 14:40:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 2.4699011680143754) internal successors, (2749), 1113 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2749 transitions. [2022-03-15 14:40:19,245 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2749 transitions. Word has length 79 [2022-03-15 14:40:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:19,246 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 2749 transitions. [2022-03-15 14:40:19,246 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) [2022-03-15 14:40:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2749 transitions. [2022-03-15 14:40:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:19,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:19,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:19,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-15 14:40:19,249 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -3246602, now seen corresponding path program 28 times [2022-03-15 14:40:19,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:19,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383010954] [2022-03-15 14:40:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:19,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:19,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383010954] [2022-03-15 14:40:19,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383010954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:19,661 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:19,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:40:19,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463195336] [2022-03-15 14:40:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:19,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:40:19,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:40:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:40:19,662 INFO L87 Difference]: Start difference. First operand 1114 states and 2749 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) [2022-03-15 14:40:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:20,778 INFO L93 Difference]: Finished difference Result 1335 states and 3250 transitions. [2022-03-15 14:40:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:40:20,779 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 [2022-03-15 14:40:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:20,781 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:40:20,781 INFO L226 Difference]: Without dead ends: 1098 [2022-03-15 14:40:20,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=1979, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:40:20,782 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 327 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:20,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 3164 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:40:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-15 14:40:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2022-03-15 14:40:20,798 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) [2022-03-15 14:40:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2654 transitions. [2022-03-15 14:40:20,800 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2654 transitions. Word has length 79 [2022-03-15 14:40:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:20,801 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2654 transitions. [2022-03-15 14:40:20,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2654 transitions. [2022-03-15 14:40:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:20,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:20,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:20,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-15 14:40:20,803 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1936966800, now seen corresponding path program 29 times [2022-03-15 14:40:20,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:20,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802100929] [2022-03-15 14:40:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:21,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:21,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802100929] [2022-03-15 14:40:21,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802100929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:21,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:21,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:40:21,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104713492] [2022-03-15 14:40:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:21,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:40:21,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:40:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:40:21,179 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) [2022-03-15 14:40:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:22,015 INFO L93 Difference]: Finished difference Result 1358 states and 3307 transitions. [2022-03-15 14:40:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:40:22,015 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 [2022-03-15 14:40:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:22,017 INFO L225 Difference]: With dead ends: 1358 [2022-03-15 14:40:22,017 INFO L226 Difference]: Without dead ends: 1082 [2022-03-15 14:40:22,018 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 [2022-03-15 14:40:22,018 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 329 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:22,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2892 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-03-15 14:40:22,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-03-15 14:40:22,032 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) [2022-03-15 14:40:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2643 transitions. [2022-03-15 14:40:22,034 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2643 transitions. Word has length 79 [2022-03-15 14:40:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:22,034 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2643 transitions. [2022-03-15 14:40:22,035 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) [2022-03-15 14:40:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2643 transitions. [2022-03-15 14:40:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:22,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:22,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:22,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-15 14:40:22,037 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1083286280, now seen corresponding path program 30 times [2022-03-15 14:40:22,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:22,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148195438] [2022-03-15 14:40:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:22,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:22,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:22,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148195438] [2022-03-15 14:40:22,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148195438] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:22,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:22,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:40:22,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704888617] [2022-03-15 14:40:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:22,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:40:22,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:40:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:40:22,445 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) [2022-03-15 14:40:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:23,311 INFO L93 Difference]: Finished difference Result 1346 states and 3274 transitions. [2022-03-15 14:40:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 14:40:23,312 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 [2022-03-15 14:40:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:23,313 INFO L225 Difference]: With dead ends: 1346 [2022-03-15 14:40:23,314 INFO L226 Difference]: Without dead ends: 1001 [2022-03-15 14:40:23,314 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 [2022-03-15 14:40:23,315 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 343 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:23,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2957 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-03-15 14:40:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-03-15 14:40:23,328 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) [2022-03-15 14:40:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2488 transitions. [2022-03-15 14:40:23,330 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2488 transitions. Word has length 79 [2022-03-15 14:40:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:23,330 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 2488 transitions. [2022-03-15 14:40:23,330 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) [2022-03-15 14:40:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2488 transitions. [2022-03-15 14:40:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:23,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:23,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-15 14:40:23,333 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1960918208, now seen corresponding path program 31 times [2022-03-15 14:40:23,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:23,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496453184] [2022-03-15 14:40:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:23,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:23,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496453184] [2022-03-15 14:40:23,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496453184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:23,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:23,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:23,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480668493] [2022-03-15 14:40:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:23,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:23,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:23,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:23,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:23,696 INFO L87 Difference]: Start difference. First operand 1001 states and 2488 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) [2022-03-15 14:40:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:25,438 INFO L93 Difference]: Finished difference Result 1347 states and 3369 transitions. [2022-03-15 14:40:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:40:25,438 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 [2022-03-15 14:40:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:25,441 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:40:25,441 INFO L226 Difference]: Without dead ends: 1217 [2022-03-15 14:40:25,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=266, Invalid=3040, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:40:25,442 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 329 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:25,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3051 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:40:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-15 14:40:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1085. [2022-03-15 14:40:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 2.5009225092250924) internal successors, (2711), 1084 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2711 transitions. [2022-03-15 14:40:25,468 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2711 transitions. Word has length 79 [2022-03-15 14:40:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:25,468 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2711 transitions. [2022-03-15 14:40:25,468 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) [2022-03-15 14:40:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2711 transitions. [2022-03-15 14:40:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:25,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:25,470 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] [2022-03-15 14:40:25,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-15 14:40:25,470 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1480657922, now seen corresponding path program 32 times [2022-03-15 14:40:25,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:25,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018926175] [2022-03-15 14:40:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:25,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:25,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018926175] [2022-03-15 14:40:25,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018926175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:25,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:25,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:25,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007966471] [2022-03-15 14:40:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:25,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:25,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:25,870 INFO L87 Difference]: Start difference. First operand 1085 states and 2711 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) [2022-03-15 14:40:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:28,314 INFO L93 Difference]: Finished difference Result 1342 states and 3349 transitions. [2022-03-15 14:40:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:40:28,314 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 [2022-03-15 14:40:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:28,316 INFO L225 Difference]: With dead ends: 1342 [2022-03-15 14:40:28,316 INFO L226 Difference]: Without dead ends: 1244 [2022-03-15 14:40:28,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:40:28,317 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 361 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:28,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2884 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:40:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2022-03-15 14:40:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1089. [2022-03-15 14:40:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.4981617647058822) internal successors, (2718), 1088 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2718 transitions. [2022-03-15 14:40:28,331 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2718 transitions. Word has length 79 [2022-03-15 14:40:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:28,331 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2718 transitions. [2022-03-15 14:40:28,332 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) [2022-03-15 14:40:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2718 transitions. [2022-03-15 14:40:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:28,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:28,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:28,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-15 14:40:28,334 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2100072096, now seen corresponding path program 33 times [2022-03-15 14:40:28,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:28,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063915936] [2022-03-15 14:40:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:28,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:28,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063915936] [2022-03-15 14:40:28,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063915936] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:28,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:28,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:28,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086300980] [2022-03-15 14:40:28,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:28,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:28,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:28,741 INFO L87 Difference]: Start difference. First operand 1089 states and 2718 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) [2022-03-15 14:40:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:30,279 INFO L93 Difference]: Finished difference Result 1310 states and 3265 transitions. [2022-03-15 14:40:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:40:30,280 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 [2022-03-15 14:40:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:30,282 INFO L225 Difference]: With dead ends: 1310 [2022-03-15 14:40:30,282 INFO L226 Difference]: Without dead ends: 1197 [2022-03-15 14:40:30,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=268, Invalid=2924, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:40:30,283 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 329 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:30,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3053 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:40:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-03-15 14:40:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1077. [2022-03-15 14:40:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4990706319702602) internal successors, (2689), 1076 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) [2022-03-15 14:40:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2689 transitions. [2022-03-15 14:40:30,297 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2689 transitions. Word has length 79 [2022-03-15 14:40:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:30,298 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2689 transitions. [2022-03-15 14:40:30,298 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) [2022-03-15 14:40:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2689 transitions. [2022-03-15 14:40:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:30,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:30,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:30,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-15 14:40:30,300 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1541113504, now seen corresponding path program 34 times [2022-03-15 14:40:30,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:30,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635317378] [2022-03-15 14:40:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:30,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:30,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635317378] [2022-03-15 14:40:30,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635317378] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:30,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:30,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:30,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625174600] [2022-03-15 14:40:30,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:30,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:30,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:30,646 INFO L87 Difference]: Start difference. First operand 1077 states and 2689 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) [2022-03-15 14:40:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:32,462 INFO L93 Difference]: Finished difference Result 1352 states and 3368 transitions. [2022-03-15 14:40:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:40:32,463 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 [2022-03-15 14:40:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:32,465 INFO L225 Difference]: With dead ends: 1352 [2022-03-15 14:40:32,465 INFO L226 Difference]: Without dead ends: 1254 [2022-03-15 14:40:32,465 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 [2022-03-15 14:40:32,465 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 333 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:32,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2943 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:40:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-15 14:40:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1101. [2022-03-15 14:40:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 2.497272727272727) internal successors, (2747), 1100 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2747 transitions. [2022-03-15 14:40:32,484 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2747 transitions. Word has length 79 [2022-03-15 14:40:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:32,484 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2747 transitions. [2022-03-15 14:40:32,484 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) [2022-03-15 14:40:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2747 transitions. [2022-03-15 14:40:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:32,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:32,486 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] [2022-03-15 14:40:32,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-15 14:40:32,486 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2000024092, now seen corresponding path program 35 times [2022-03-15 14:40:32,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:32,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731445828] [2022-03-15 14:40:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:32,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:32,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731445828] [2022-03-15 14:40:32,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731445828] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:32,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:32,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:32,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197908825] [2022-03-15 14:40:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:32,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:32,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:32,866 INFO L87 Difference]: Start difference. First operand 1101 states and 2747 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) [2022-03-15 14:40:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:35,426 INFO L93 Difference]: Finished difference Result 1335 states and 3315 transitions. [2022-03-15 14:40:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:40:35,426 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 [2022-03-15 14:40:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:35,428 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:40:35,428 INFO L226 Difference]: Without dead ends: 1184 [2022-03-15 14:40:35,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2825, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:40:35,428 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 332 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:35,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2776 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:40:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-15 14:40:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1061. [2022-03-15 14:40:35,441 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) [2022-03-15 14:40:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2641 transitions. [2022-03-15 14:40:35,443 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2641 transitions. Word has length 79 [2022-03-15 14:40:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 2641 transitions. [2022-03-15 14:40:35,443 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) [2022-03-15 14:40:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2641 transitions. [2022-03-15 14:40:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:35,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:35,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:35,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-15 14:40:35,446 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1705977120, now seen corresponding path program 36 times [2022-03-15 14:40:35,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:35,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025322230] [2022-03-15 14:40:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:35,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:35,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:35,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025322230] [2022-03-15 14:40:35,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025322230] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:35,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:35,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:35,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776152513] [2022-03-15 14:40:35,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:35,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:35,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:35,865 INFO L87 Difference]: Start difference. First operand 1061 states and 2641 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) [2022-03-15 14:40:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:37,458 INFO L93 Difference]: Finished difference Result 1331 states and 3313 transitions. [2022-03-15 14:40:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:40:37,458 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 [2022-03-15 14:40:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:37,460 INFO L225 Difference]: With dead ends: 1331 [2022-03-15 14:40:37,460 INFO L226 Difference]: Without dead ends: 1201 [2022-03-15 14:40:37,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=3385, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:40:37,461 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 340 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:37,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 3226 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:40:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-03-15 14:40:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1073. [2022-03-15 14:40:37,473 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) [2022-03-15 14:40:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-03-15 14:40:37,475 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-03-15 14:40:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:37,475 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-03-15 14:40:37,475 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) [2022-03-15 14:40:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-03-15 14:40:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:37,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:37,477 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] [2022-03-15 14:40:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-15 14:40:37,477 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 852585954, now seen corresponding path program 37 times [2022-03-15 14:40:37,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:37,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793931516] [2022-03-15 14:40:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:37,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:37,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793931516] [2022-03-15 14:40:37,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793931516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:37,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:37,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:37,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411225490] [2022-03-15 14:40:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:37,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:37,837 INFO L87 Difference]: Start difference. First operand 1073 states and 2666 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) [2022-03-15 14:40:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:39,355 INFO L93 Difference]: Finished difference Result 1322 states and 3282 transitions. [2022-03-15 14:40:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:40:39,356 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 [2022-03-15 14:40:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:39,357 INFO L225 Difference]: With dead ends: 1322 [2022-03-15 14:40:39,357 INFO L226 Difference]: Without dead ends: 1224 [2022-03-15 14:40:39,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=274, Invalid=3266, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:40:39,358 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 341 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:39,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3076 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:40:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-03-15 14:40:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1077. [2022-03-15 14:40:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4842007434944238) internal successors, (2673), 1076 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) [2022-03-15 14:40:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2673 transitions. [2022-03-15 14:40:39,370 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2673 transitions. Word has length 79 [2022-03-15 14:40:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:39,371 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2673 transitions. [2022-03-15 14:40:39,371 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) [2022-03-15 14:40:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2673 transitions. [2022-03-15 14:40:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:39,372 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:39,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:39,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-15 14:40:39,372 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1566823232, now seen corresponding path program 38 times [2022-03-15 14:40:39,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:39,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832650469] [2022-03-15 14:40:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:39,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:39,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832650469] [2022-03-15 14:40:39,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832650469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:39,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:39,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:39,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318146888] [2022-03-15 14:40:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:39,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:39,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:39,766 INFO L87 Difference]: Start difference. First operand 1077 states and 2673 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) [2022-03-15 14:40:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:41,147 INFO L93 Difference]: Finished difference Result 1305 states and 3233 transitions. [2022-03-15 14:40:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:40:41,147 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 [2022-03-15 14:40:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:41,149 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:40:41,149 INFO L226 Difference]: Without dead ends: 1192 [2022-03-15 14:40:41,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=274, Invalid=3266, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:40:41,150 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 352 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:41,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2988 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:40:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-15 14:40:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1065. [2022-03-15 14:40:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.488721804511278) internal successors, (2648), 1064 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2648 transitions. [2022-03-15 14:40:41,163 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2648 transitions. Word has length 79 [2022-03-15 14:40:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:41,164 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2648 transitions. [2022-03-15 14:40:41,164 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) [2022-03-15 14:40:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2648 transitions. [2022-03-15 14:40:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:41,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:41,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:41,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-15 14:40:41,165 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1892271458, now seen corresponding path program 39 times [2022-03-15 14:40:41,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:41,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819363478] [2022-03-15 14:40:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:41,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:41,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819363478] [2022-03-15 14:40:41,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819363478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:41,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:41,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:41,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355009448] [2022-03-15 14:40:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:41,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:41,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:41,601 INFO L87 Difference]: Start difference. First operand 1065 states and 2648 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) [2022-03-15 14:40:44,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:40:45,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:40:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:45,989 INFO L93 Difference]: Finished difference Result 1315 states and 3261 transitions. [2022-03-15 14:40:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:40:45,990 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 [2022-03-15 14:40:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:45,991 INFO L225 Difference]: With dead ends: 1315 [2022-03-15 14:40:45,991 INFO L226 Difference]: Without dead ends: 1157 [2022-03-15 14:40:45,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=3057, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:40:45,992 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 351 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:45,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 3125 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-15 14:40:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-15 14:40:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1053. [2022-03-15 14:40:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4933460076045626) internal successors, (2623), 1052 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2623 transitions. [2022-03-15 14:40:46,006 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2623 transitions. Word has length 79 [2022-03-15 14:40:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:46,006 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2623 transitions. [2022-03-15 14:40:46,006 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) [2022-03-15 14:40:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2623 transitions. [2022-03-15 14:40:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:46,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:46,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-15 14:40:46,008 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -498974974, now seen corresponding path program 40 times [2022-03-15 14:40:46,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:46,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078490299] [2022-03-15 14:40:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:46,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:46,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078490299] [2022-03-15 14:40:46,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078490299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:46,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:46,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:46,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027811902] [2022-03-15 14:40:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:46,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:46,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:46,414 INFO L87 Difference]: Start difference. First operand 1053 states and 2623 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:47,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:47,608 INFO L93 Difference]: Finished difference Result 1287 states and 3200 transitions. [2022-03-15 14:40:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:40:47,609 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 [2022-03-15 14:40:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:47,611 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:40:47,611 INFO L226 Difference]: Without dead ends: 1173 [2022-03-15 14:40:47,611 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 [2022-03-15 14:40:47,611 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 319 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:47,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2743 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:40:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-03-15 14:40:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1077. [2022-03-15 14:40:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4953531598513012) internal successors, (2685), 1076 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2685 transitions. [2022-03-15 14:40:47,630 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2685 transitions. Word has length 79 [2022-03-15 14:40:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:47,630 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2685 transitions. [2022-03-15 14:40:47,630 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) [2022-03-15 14:40:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2685 transitions. [2022-03-15 14:40:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:47,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:47,632 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] [2022-03-15 14:40:47,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-15 14:40:47,632 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -865869404, now seen corresponding path program 41 times [2022-03-15 14:40:47,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:47,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116924496] [2022-03-15 14:40:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:48,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:48,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116924496] [2022-03-15 14:40:48,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116924496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:48,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:48,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:48,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626450958] [2022-03-15 14:40:48,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:48,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:48,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:48,005 INFO L87 Difference]: Start difference. First operand 1077 states and 2685 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:49,209 INFO L93 Difference]: Finished difference Result 1298 states and 3224 transitions. [2022-03-15 14:40:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:40:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:40:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:49,211 INFO L225 Difference]: With dead ends: 1298 [2022-03-15 14:40:49,211 INFO L226 Difference]: Without dead ends: 1200 [2022-03-15 14:40:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2825, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:40:49,212 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 309 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:49,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 3071 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:40:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-15 14:40:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1081. [2022-03-15 14:40:49,225 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) [2022-03-15 14:40:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-03-15 14:40:49,226 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-03-15 14:40:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:49,226 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-03-15 14:40:49,226 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) [2022-03-15 14:40:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-03-15 14:40:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:49,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:49,229 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] [2022-03-15 14:40:49,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-15 14:40:49,229 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:49,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash -151632126, now seen corresponding path program 42 times [2022-03-15 14:40:49,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:49,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512380823] [2022-03-15 14:40:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:49,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:49,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512380823] [2022-03-15 14:40:49,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512380823] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:49,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:49,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:49,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739269375] [2022-03-15 14:40:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:49,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:49,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:49,630 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) [2022-03-15 14:40:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:51,056 INFO L93 Difference]: Finished difference Result 1266 states and 3140 transitions. [2022-03-15 14:40:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:40:51,057 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 [2022-03-15 14:40:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:51,058 INFO L225 Difference]: With dead ends: 1266 [2022-03-15 14:40:51,058 INFO L226 Difference]: Without dead ends: 1157 [2022-03-15 14:40:51,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:40:51,059 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 323 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:51,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2861 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:40:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-15 14:40:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1073. [2022-03-15 14:40:51,069 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) [2022-03-15 14:40:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2674 transitions. [2022-03-15 14:40:51,071 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2674 transitions. Word has length 79 [2022-03-15 14:40:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:51,071 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2674 transitions. [2022-03-15 14:40:51,071 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) [2022-03-15 14:40:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2674 transitions. [2022-03-15 14:40:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:51,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:51,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:51,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-15 14:40:51,073 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash 319058688, now seen corresponding path program 43 times [2022-03-15 14:40:51,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:51,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730717600] [2022-03-15 14:40:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:51,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:51,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730717600] [2022-03-15 14:40:51,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730717600] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:51,483 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:51,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:51,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193729047] [2022-03-15 14:40:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:51,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:51,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:51,484 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) [2022-03-15 14:40:53,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:40:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:54,973 INFO L93 Difference]: Finished difference Result 1320 states and 3276 transitions. [2022-03-15 14:40:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:40:54,974 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 [2022-03-15 14:40:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:54,975 INFO L225 Difference]: With dead ends: 1320 [2022-03-15 14:40:54,975 INFO L226 Difference]: Without dead ends: 1222 [2022-03-15 14:40:54,976 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 [2022-03-15 14:40:54,976 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 333 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:54,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2892 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:40:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-15 14:40:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1097. [2022-03-15 14:40:54,987 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) [2022-03-15 14:40:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-03-15 14:40:54,988 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-03-15 14:40:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:54,988 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-03-15 14:40:54,988 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) [2022-03-15 14:40:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-03-15 14:40:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:54,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:54,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:54,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-15 14:40:54,991 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash -434771012, now seen corresponding path program 44 times [2022-03-15 14:40:54,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:54,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407607077] [2022-03-15 14:40:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:55,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:55,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407607077] [2022-03-15 14:40:55,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407607077] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:55,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:55,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:40:55,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928880547] [2022-03-15 14:40:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:55,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:40:55,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:40:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:40:55,356 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) [2022-03-15 14:40:57,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:40:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:57,956 INFO L93 Difference]: Finished difference Result 1288 states and 3188 transitions. [2022-03-15 14:40:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:40:57,957 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 [2022-03-15 14:40:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:57,958 INFO L225 Difference]: With dead ends: 1288 [2022-03-15 14:40:57,958 INFO L226 Difference]: Without dead ends: 1145 [2022-03-15 14:40:57,959 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 [2022-03-15 14:40:57,959 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 312 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:57,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 3109 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:40:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-03-15 14:40:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1065. [2022-03-15 14:40:57,970 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) [2022-03-15 14:40:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-03-15 14:40:57,971 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-03-15 14:40:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:57,972 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-03-15 14:40:57,972 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) [2022-03-15 14:40:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-03-15 14:40:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:40:57,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:57,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:57,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-15 14:40:57,973 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:57,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1152942558, now seen corresponding path program 45 times [2022-03-15 14:40:57,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:57,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882049015] [2022-03-15 14:40:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:58,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:58,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882049015] [2022-03-15 14:40:58,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882049015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:58,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:40:58,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:40:58,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26420339] [2022-03-15 14:40:58,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:58,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:40:58,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:58,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:40:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:40:58,371 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) [2022-03-15 14:41:02,495 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 [] [2022-03-15 14:41:03,721 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 [] [2022-03-15 14:41:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:03,896 INFO L93 Difference]: Finished difference Result 1442 states and 3553 transitions. [2022-03-15 14:41:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:41:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:41:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:03,898 INFO L225 Difference]: With dead ends: 1442 [2022-03-15 14:41:03,898 INFO L226 Difference]: Without dead ends: 1344 [2022-03-15 14:41:03,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=3850, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:41:03,899 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 410 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:03,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 3338 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1282 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-03-15 14:41:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-03-15 14:41:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1081. [2022-03-15 14:41:03,915 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) [2022-03-15 14:41:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-03-15 14:41:03,917 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-03-15 14:41:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:03,917 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-03-15 14:41:03,917 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) [2022-03-15 14:41:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-03-15 14:41:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:03,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:03,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:03,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-15 14:41:03,920 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1867179836, now seen corresponding path program 46 times [2022-03-15 14:41:03,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:03,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738090505] [2022-03-15 14:41:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:04,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:04,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738090505] [2022-03-15 14:41:04,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738090505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:04,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:04,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:41:04,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466308948] [2022-03-15 14:41:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:04,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:41:04,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:41:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:41:04,317 INFO L87 Difference]: Start difference. First operand 1081 states and 2692 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) [2022-03-15 14:41:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:06,169 INFO L93 Difference]: Finished difference Result 1335 states and 3311 transitions. [2022-03-15 14:41:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:41:06,169 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 [2022-03-15 14:41:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:06,171 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:41:06,171 INFO L226 Difference]: Without dead ends: 1184 [2022-03-15 14:41:06,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=297, Invalid=3609, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:41:06,171 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 405 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:06,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 3167 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:41:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-15 14:41:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1069. [2022-03-15 14:41:06,185 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) [2022-03-15 14:41:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-03-15 14:41:06,187 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-03-15 14:41:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:06,187 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-03-15 14:41:06,187 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) [2022-03-15 14:41:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-03-15 14:41:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:06,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:06,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-15 14:41:06,189 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1338960420, now seen corresponding path program 47 times [2022-03-15 14:41:06,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:06,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555326181] [2022-03-15 14:41:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:06,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:06,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555326181] [2022-03-15 14:41:06,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555326181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:06,580 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:06,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:06,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854325005] [2022-03-15 14:41:06,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:06,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:06,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:06,581 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) [2022-03-15 14:41:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:07,843 INFO L93 Difference]: Finished difference Result 1307 states and 3234 transitions. [2022-03-15 14:41:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:41:07,843 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 [2022-03-15 14:41:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:07,844 INFO L225 Difference]: With dead ends: 1307 [2022-03-15 14:41:07,844 INFO L226 Difference]: Without dead ends: 1133 [2022-03-15 14:41:07,845 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 [2022-03-15 14:41:07,845 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 373 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:07,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2947 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:41:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-03-15 14:41:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1053. [2022-03-15 14:41:07,854 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) [2022-03-15 14:41:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-03-15 14:41:07,855 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-03-15 14:41:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:07,855 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-03-15 14:41:07,855 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) [2022-03-15 14:41:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-03-15 14:41:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:07,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:07,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:07,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-15 14:41:07,857 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -535166140, now seen corresponding path program 48 times [2022-03-15 14:41:07,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:07,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085029376] [2022-03-15 14:41:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:08,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:08,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085029376] [2022-03-15 14:41:08,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085029376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:08,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:08,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:08,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125509498] [2022-03-15 14:41:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:08,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:08,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:08,230 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) [2022-03-15 14:41:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:10,009 INFO L93 Difference]: Finished difference Result 1341 states and 3315 transitions. [2022-03-15 14:41:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:41:10,009 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 [2022-03-15 14:41:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:10,011 INFO L225 Difference]: With dead ends: 1341 [2022-03-15 14:41:10,011 INFO L226 Difference]: Without dead ends: 1243 [2022-03-15 14:41:10,011 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 [2022-03-15 14:41:10,011 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 312 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:10,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2971 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:41:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-03-15 14:41:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1101. [2022-03-15 14:41:10,022 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) [2022-03-15 14:41:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-15 14:41:10,023 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-15 14:41:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:10,023 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-15 14:41:10,023 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) [2022-03-15 14:41:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-15 14:41:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:10,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:10,025 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] [2022-03-15 14:41:10,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-15 14:41:10,025 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1288995840, now seen corresponding path program 49 times [2022-03-15 14:41:10,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:10,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300254273] [2022-03-15 14:41:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:10,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:10,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300254273] [2022-03-15 14:41:10,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300254273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:10,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:10,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:10,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263600187] [2022-03-15 14:41:10,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:10,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:10,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:10,380 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) [2022-03-15 14:41:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:12,727 INFO L93 Difference]: Finished difference Result 1309 states and 3227 transitions. [2022-03-15 14:41:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:41:12,728 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 [2022-03-15 14:41:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:12,729 INFO L225 Difference]: With dead ends: 1309 [2022-03-15 14:41:12,729 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 14:41:12,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:41:12,730 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 344 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:12,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 3098 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:41:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 14:41:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1077. [2022-03-15 14:41:12,742 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) [2022-03-15 14:41:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-15 14:41:12,744 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-15 14:41:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-15 14:41:12,745 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) [2022-03-15 14:41:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-15 14:41:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:12,746 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:12,746 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] [2022-03-15 14:41:12,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-15 14:41:12,747 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1637965892, now seen corresponding path program 50 times [2022-03-15 14:41:12,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:12,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621372595] [2022-03-15 14:41:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:13,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:13,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621372595] [2022-03-15 14:41:13,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621372595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:13,094 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:13,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:13,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113767943] [2022-03-15 14:41:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:13,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:13,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:13,095 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) [2022-03-15 14:41:14,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:14,375 INFO L93 Difference]: Finished difference Result 1285 states and 3161 transitions. [2022-03-15 14:41:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:41:14,376 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 [2022-03-15 14:41:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:14,377 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:41:14,377 INFO L226 Difference]: Without dead ends: 1081 [2022-03-15 14:41:14,378 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 [2022-03-15 14:41:14,378 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 299 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:14,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2851 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:41:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-15 14:41:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1029. [2022-03-15 14:41:14,390 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) [2022-03-15 14:41:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2557 transitions. [2022-03-15 14:41:14,392 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2557 transitions. Word has length 79 [2022-03-15 14:41:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:14,392 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2557 transitions. [2022-03-15 14:41:14,392 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) [2022-03-15 14:41:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2557 transitions. [2022-03-15 14:41:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:14,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:14,394 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] [2022-03-15 14:41:14,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-15 14:41:14,394 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash 728359548, now seen corresponding path program 51 times [2022-03-15 14:41:14,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:14,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695103558] [2022-03-15 14:41:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:14,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:14,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695103558] [2022-03-15 14:41:14,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695103558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:14,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:14,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:14,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125089966] [2022-03-15 14:41:14,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:14,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:14,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:14,768 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) [2022-03-15 14:41:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:15,683 INFO L93 Difference]: Finished difference Result 1251 states and 3101 transitions. [2022-03-15 14:41:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:41:15,683 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 [2022-03-15 14:41:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:15,685 INFO L225 Difference]: With dead ends: 1251 [2022-03-15 14:41:15,685 INFO L226 Difference]: Without dead ends: 1137 [2022-03-15 14:41:15,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=1972, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:41:15,685 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 297 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:15,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2333 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-03-15 14:41:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1065. [2022-03-15 14:41:15,695 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) [2022-03-15 14:41:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-03-15 14:41:15,696 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-03-15 14:41:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:15,697 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-03-15 14:41:15,697 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) [2022-03-15 14:41:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-03-15 14:41:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:15,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:15,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:15,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-15 14:41:15,698 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash 361465118, now seen corresponding path program 52 times [2022-03-15 14:41:15,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:15,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326810770] [2022-03-15 14:41:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:16,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:16,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326810770] [2022-03-15 14:41:16,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326810770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:16,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:16,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:16,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310592610] [2022-03-15 14:41:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:16,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:16,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:16,090 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) [2022-03-15 14:41:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:17,088 INFO L93 Difference]: Finished difference Result 1262 states and 3125 transitions. [2022-03-15 14:41:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:41:17,088 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 [2022-03-15 14:41:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:17,090 INFO L225 Difference]: With dead ends: 1262 [2022-03-15 14:41:17,090 INFO L226 Difference]: Without dead ends: 1164 [2022-03-15 14:41:17,090 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 [2022-03-15 14:41:17,091 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 288 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:17,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2672 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-15 14:41:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1069. [2022-03-15 14:41:17,103 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) [2022-03-15 14:41:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-03-15 14:41:17,104 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-03-15 14:41:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:17,105 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-03-15 14:41:17,105 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) [2022-03-15 14:41:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-03-15 14:41:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:17,107 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:17,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:17,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-15 14:41:17,107 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1075702396, now seen corresponding path program 53 times [2022-03-15 14:41:17,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:17,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21211301] [2022-03-15 14:41:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:17,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:17,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21211301] [2022-03-15 14:41:17,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21211301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:17,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:17,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:17,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426877001] [2022-03-15 14:41:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:17,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:17,484 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) [2022-03-15 14:41:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:18,432 INFO L93 Difference]: Finished difference Result 1230 states and 3041 transitions. [2022-03-15 14:41:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:18,433 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 [2022-03-15 14:41:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:18,435 INFO L225 Difference]: With dead ends: 1230 [2022-03-15 14:41:18,435 INFO L226 Difference]: Without dead ends: 1121 [2022-03-15 14:41:18,435 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 [2022-03-15 14:41:18,435 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 316 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:18,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2345 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-03-15 14:41:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1061. [2022-03-15 14:41:18,444 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) [2022-03-15 14:41:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2641 transitions. [2022-03-15 14:41:18,445 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2641 transitions. Word has length 79 [2022-03-15 14:41:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 2641 transitions. [2022-03-15 14:41:18,446 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) [2022-03-15 14:41:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2641 transitions. [2022-03-15 14:41:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:18,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:18,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-15 14:41:18,447 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1546393210, now seen corresponding path program 54 times [2022-03-15 14:41:18,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:18,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551921267] [2022-03-15 14:41:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:18,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:18,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551921267] [2022-03-15 14:41:18,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551921267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:18,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:18,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:18,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785469668] [2022-03-15 14:41:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:18,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:18,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:18,805 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) [2022-03-15 14:41:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:19,935 INFO L93 Difference]: Finished difference Result 1284 states and 3177 transitions. [2022-03-15 14:41:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:41:19,936 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 [2022-03-15 14:41:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:19,937 INFO L225 Difference]: With dead ends: 1284 [2022-03-15 14:41:19,937 INFO L226 Difference]: Without dead ends: 1186 [2022-03-15 14:41:19,938 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 [2022-03-15 14:41:19,938 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 294 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:19,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2606 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-15 14:41:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-15 14:41:19,951 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) [2022-03-15 14:41:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2699 transitions. [2022-03-15 14:41:19,953 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2699 transitions. Word has length 79 [2022-03-15 14:41:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:19,954 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2699 transitions. [2022-03-15 14:41:19,954 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) [2022-03-15 14:41:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2699 transitions. [2022-03-15 14:41:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:19,961 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:19,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:19,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-15 14:41:19,962 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 792563510, now seen corresponding path program 55 times [2022-03-15 14:41:19,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:19,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073166004] [2022-03-15 14:41:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:20,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:20,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073166004] [2022-03-15 14:41:20,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073166004] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:20,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:20,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:20,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332241101] [2022-03-15 14:41:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:20,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:20,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:20,349 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) [2022-03-15 14:41:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:22,010 INFO L93 Difference]: Finished difference Result 1252 states and 3089 transitions. [2022-03-15 14:41:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:22,010 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 [2022-03-15 14:41:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:22,011 INFO L225 Difference]: With dead ends: 1252 [2022-03-15 14:41:22,012 INFO L226 Difference]: Without dead ends: 1109 [2022-03-15 14:41:22,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:41:22,012 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 275 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:22,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2691 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:41:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-15 14:41:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1053. [2022-03-15 14:41:22,023 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) [2022-03-15 14:41:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-03-15 14:41:22,025 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-03-15 14:41:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:22,025 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-03-15 14:41:22,025 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) [2022-03-15 14:41:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-03-15 14:41:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:22,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:22,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:22,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-15 14:41:22,028 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1914690216, now seen corresponding path program 56 times [2022-03-15 14:41:22,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:22,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878863375] [2022-03-15 14:41:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:22,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:22,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878863375] [2022-03-15 14:41:22,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878863375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:22,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:22,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:22,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630386315] [2022-03-15 14:41:22,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:22,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:22,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:22,421 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) [2022-03-15 14:41:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:23,692 INFO L93 Difference]: Finished difference Result 1327 states and 3285 transitions. [2022-03-15 14:41:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:41:23,692 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 [2022-03-15 14:41:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:23,694 INFO L225 Difference]: With dead ends: 1327 [2022-03-15 14:41:23,694 INFO L226 Difference]: Without dead ends: 1229 [2022-03-15 14:41:23,694 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 [2022-03-15 14:41:23,695 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:23,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 3012 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:41:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-15 14:41:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1081. [2022-03-15 14:41:23,708 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) [2022-03-15 14:41:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2688 transitions. [2022-03-15 14:41:23,709 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2688 transitions. Word has length 79 [2022-03-15 14:41:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2688 transitions. [2022-03-15 14:41:23,709 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) [2022-03-15 14:41:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2688 transitions. [2022-03-15 14:41:23,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:23,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:23,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:23,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-15 14:41:23,712 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1626447380, now seen corresponding path program 57 times [2022-03-15 14:41:23,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:23,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086669918] [2022-03-15 14:41:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:23,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:24,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:24,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086669918] [2022-03-15 14:41:24,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086669918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:24,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:24,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:24,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467548996] [2022-03-15 14:41:24,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:24,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:24,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:24,103 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) [2022-03-15 14:41:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:25,286 INFO L93 Difference]: Finished difference Result 1283 states and 3168 transitions. [2022-03-15 14:41:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:41:25,286 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 [2022-03-15 14:41:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:25,288 INFO L225 Difference]: With dead ends: 1283 [2022-03-15 14:41:25,288 INFO L226 Difference]: Without dead ends: 1148 [2022-03-15 14:41:25,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:41:25,288 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 329 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:25,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2872 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-15 14:41:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1057. [2022-03-15 14:41:25,300 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) [2022-03-15 14:41:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2626 transitions. [2022-03-15 14:41:25,302 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2626 transitions. Word has length 79 [2022-03-15 14:41:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:25,302 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2626 transitions. [2022-03-15 14:41:25,302 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) [2022-03-15 14:41:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2626 transitions. [2022-03-15 14:41:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:25,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:25,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:25,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-15 14:41:25,303 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1728672354, now seen corresponding path program 58 times [2022-03-15 14:41:25,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:25,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623863972] [2022-03-15 14:41:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:25,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:25,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:25,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623863972] [2022-03-15 14:41:25,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623863972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:25,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:25,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:25,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256476166] [2022-03-15 14:41:25,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:25,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:25,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:25,663 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) [2022-03-15 14:41:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:26,700 INFO L93 Difference]: Finished difference Result 1271 states and 3135 transitions. [2022-03-15 14:41:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:26,700 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 [2022-03-15 14:41:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:26,702 INFO L225 Difference]: With dead ends: 1271 [2022-03-15 14:41:26,702 INFO L226 Difference]: Without dead ends: 1105 [2022-03-15 14:41:26,702 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 [2022-03-15 14:41:26,702 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 318 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:26,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2661 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-03-15 14:41:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1049. [2022-03-15 14:41:26,711 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) [2022-03-15 14:41:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 2608 transitions. [2022-03-15 14:41:26,712 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 2608 transitions. Word has length 79 [2022-03-15 14:41:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:26,713 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 2608 transitions. [2022-03-15 14:41:26,713 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) [2022-03-15 14:41:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 2608 transitions. [2022-03-15 14:41:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:26,714 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:26,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:26,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-15 14:41:26,714 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:26,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 733675362, now seen corresponding path program 59 times [2022-03-15 14:41:26,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:26,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924777099] [2022-03-15 14:41:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:26,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:27,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:27,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924777099] [2022-03-15 14:41:27,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924777099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:27,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:27,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:27,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106455695] [2022-03-15 14:41:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:27,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:27,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:27,056 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) [2022-03-15 14:41:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:28,774 INFO L93 Difference]: Finished difference Result 1329 states and 3282 transitions. [2022-03-15 14:41:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:41:28,775 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:41:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:28,776 INFO L225 Difference]: With dead ends: 1329 [2022-03-15 14:41:28,776 INFO L226 Difference]: Without dead ends: 1231 [2022-03-15 14:41:28,777 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 [2022-03-15 14:41:28,777 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 302 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:28,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2925 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:41:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-15 14:41:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1097. [2022-03-15 14:41:28,787 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) [2022-03-15 14:41:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-03-15 14:41:28,788 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-03-15 14:41:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:28,788 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-03-15 14:41:28,788 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) [2022-03-15 14:41:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-03-15 14:41:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:28,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:28,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:28,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-15 14:41:28,790 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -20154338, now seen corresponding path program 60 times [2022-03-15 14:41:28,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:28,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445967206] [2022-03-15 14:41:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:29,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:29,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445967206] [2022-03-15 14:41:29,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445967206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:29,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:29,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:29,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973360871] [2022-03-15 14:41:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:29,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:29,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:29,151 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) [2022-03-15 14:41:31,360 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 [] [2022-03-15 14:41:33,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:41:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:33,767 INFO L93 Difference]: Finished difference Result 1297 states and 3194 transitions. [2022-03-15 14:41:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:41:33,768 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 [2022-03-15 14:41:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:33,770 INFO L225 Difference]: With dead ends: 1297 [2022-03-15 14:41:33,770 INFO L226 Difference]: Without dead ends: 1162 [2022-03-15 14:41:33,770 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 [2022-03-15 14:41:33,771 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 316 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:33,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2906 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-03-15 14:41:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-15 14:41:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1073. [2022-03-15 14:41:33,798 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) [2022-03-15 14:41:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-03-15 14:41:33,800 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-03-15 14:41:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:33,800 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-03-15 14:41:33,801 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) [2022-03-15 14:41:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-03-15 14:41:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:33,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:33,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:33,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-15 14:41:33,802 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1388159902, now seen corresponding path program 61 times [2022-03-15 14:41:33,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:33,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831976369] [2022-03-15 14:41:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:33,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:34,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:34,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831976369] [2022-03-15 14:41:34,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831976369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:34,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:34,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:34,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057360252] [2022-03-15 14:41:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:34,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:34,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:34,130 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) [2022-03-15 14:41:36,284 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 [] [2022-03-15 14:41:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:37,004 INFO L93 Difference]: Finished difference Result 1273 states and 3128 transitions. [2022-03-15 14:41:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:37,004 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 [2022-03-15 14:41:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:37,006 INFO L225 Difference]: With dead ends: 1273 [2022-03-15 14:41:37,006 INFO L226 Difference]: Without dead ends: 1085 [2022-03-15 14:41:37,006 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 [2022-03-15 14:41:37,006 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 289 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:37,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2965 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 14:41:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-15 14:41:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-15 14:41:37,015 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) [2022-03-15 14:41:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2586 transitions. [2022-03-15 14:41:37,016 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2586 transitions. Word has length 79 [2022-03-15 14:41:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:37,017 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2586 transitions. [2022-03-15 14:41:37,017 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) [2022-03-15 14:41:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2586 transitions. [2022-03-15 14:41:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:37,018 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:37,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:37,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-15 14:41:37,018 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash 71669508, now seen corresponding path program 62 times [2022-03-15 14:41:37,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:37,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013361433] [2022-03-15 14:41:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:37,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:37,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013361433] [2022-03-15 14:41:37,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013361433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:37,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:37,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:41:37,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276206015] [2022-03-15 14:41:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:37,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:41:37,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:41:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:41:37,374 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) [2022-03-15 14:41:40,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:41:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:40,322 INFO L93 Difference]: Finished difference Result 1369 states and 3388 transitions. [2022-03-15 14:41:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:41:40,323 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 [2022-03-15 14:41:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:40,324 INFO L225 Difference]: With dead ends: 1369 [2022-03-15 14:41:40,324 INFO L226 Difference]: Without dead ends: 1271 [2022-03-15 14:41:40,325 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 [2022-03-15 14:41:40,325 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 355 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:40,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3117 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 14:41:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-15 14:41:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1093. [2022-03-15 14:41:40,336 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) [2022-03-15 14:41:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-15 14:41:40,338 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-15 14:41:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:40,338 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-15 14:41:40,338 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) [2022-03-15 14:41:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-15 14:41:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:40,339 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:40,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:40,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-15 14:41:40,340 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash -682160192, now seen corresponding path program 63 times [2022-03-15 14:41:40,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:40,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255893050] [2022-03-15 14:41:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:40,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:40,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255893050] [2022-03-15 14:41:40,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255893050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:40,734 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:40,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:41:40,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906781760] [2022-03-15 14:41:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:40,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:41:40,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:41:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:41:40,735 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) [2022-03-15 14:41:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:42,265 INFO L93 Difference]: Finished difference Result 1325 states and 3271 transitions. [2022-03-15 14:41:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:41:42,265 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 [2022-03-15 14:41:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:42,267 INFO L225 Difference]: With dead ends: 1325 [2022-03-15 14:41:42,267 INFO L226 Difference]: Without dead ends: 1190 [2022-03-15 14:41:42,267 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 [2022-03-15 14:41:42,268 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 341 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:42,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3086 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:41:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-15 14:41:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1069. [2022-03-15 14:41:42,278 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) [2022-03-15 14:41:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-15 14:41:42,280 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-15 14:41:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:42,280 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-15 14:41:42,280 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) [2022-03-15 14:41:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-15 14:41:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:42,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:42,281 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] [2022-03-15 14:41:42,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-15 14:41:42,281 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2050165756, now seen corresponding path program 64 times [2022-03-15 14:41:42,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:42,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601480110] [2022-03-15 14:41:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:42,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:42,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601480110] [2022-03-15 14:41:42,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601480110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:42,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:42,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:42,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712561769] [2022-03-15 14:41:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:42,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:42,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:42,644 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) [2022-03-15 14:41:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:43,862 INFO L93 Difference]: Finished difference Result 1289 states and 3172 transitions. [2022-03-15 14:41:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:41:43,862 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 [2022-03-15 14:41:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:43,864 INFO L225 Difference]: With dead ends: 1289 [2022-03-15 14:41:43,864 INFO L226 Difference]: Without dead ends: 1109 [2022-03-15 14:41:43,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=2637, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:41:43,865 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 316 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:43,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2859 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-15 14:41:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1045. [2022-03-15 14:41:43,874 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) [2022-03-15 14:41:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2593 transitions. [2022-03-15 14:41:43,876 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2593 transitions. Word has length 79 [2022-03-15 14:41:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:43,876 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2593 transitions. [2022-03-15 14:41:43,876 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) [2022-03-15 14:41:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2593 transitions. [2022-03-15 14:41:43,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:43,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:43,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:43,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-15 14:41:43,877 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2005688956, now seen corresponding path program 65 times [2022-03-15 14:41:43,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:43,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290214170] [2022-03-15 14:41:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:44,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:44,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290214170] [2022-03-15 14:41:44,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290214170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:44,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:44,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:44,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539487042] [2022-03-15 14:41:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:44,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:44,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:44,216 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) [2022-03-15 14:41:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:45,281 INFO L93 Difference]: Finished difference Result 1304 states and 3207 transitions. [2022-03-15 14:41:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:45,282 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 [2022-03-15 14:41:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:45,283 INFO L225 Difference]: With dead ends: 1304 [2022-03-15 14:41:45,283 INFO L226 Difference]: Without dead ends: 1073 [2022-03-15 14:41:45,284 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 [2022-03-15 14:41:45,284 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:45,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2943 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-15 14:41:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1029. [2022-03-15 14:41:45,293 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) [2022-03-15 14:41:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2553 transitions. [2022-03-15 14:41:45,295 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2553 transitions. Word has length 79 [2022-03-15 14:41:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:45,295 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2553 transitions. [2022-03-15 14:41:45,295 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) [2022-03-15 14:41:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2553 transitions. [2022-03-15 14:41:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:45,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:45,296 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] [2022-03-15 14:41:45,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-15 14:41:45,297 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash -642885026, now seen corresponding path program 66 times [2022-03-15 14:41:45,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:45,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842409429] [2022-03-15 14:41:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:45,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:45,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842409429] [2022-03-15 14:41:45,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842409429] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:45,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:45,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:45,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325512683] [2022-03-15 14:41:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:45,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:45,636 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) [2022-03-15 14:41:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:47,914 INFO L93 Difference]: Finished difference Result 1345 states and 3322 transitions. [2022-03-15 14:41:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:41:47,914 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 [2022-03-15 14:41:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:47,916 INFO L225 Difference]: With dead ends: 1345 [2022-03-15 14:41:47,916 INFO L226 Difference]: Without dead ends: 1247 [2022-03-15 14:41:47,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:41:47,916 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 319 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:47,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2997 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 14:41:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-15 14:41:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1089. [2022-03-15 14:41:47,926 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) [2022-03-15 14:41:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-03-15 14:41:47,927 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-03-15 14:41:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:47,927 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-03-15 14:41:47,927 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) [2022-03-15 14:41:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-03-15 14:41:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:47,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:47,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:47,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-15 14:41:47,929 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:47,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:47,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1396714726, now seen corresponding path program 67 times [2022-03-15 14:41:47,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:47,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221588042] [2022-03-15 14:41:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:47,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:48,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:48,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221588042] [2022-03-15 14:41:48,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221588042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:48,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:48,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:41:48,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770326852] [2022-03-15 14:41:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:48,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:41:48,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:48,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:41:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:41:48,307 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) [2022-03-15 14:41:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:49,654 INFO L93 Difference]: Finished difference Result 1301 states and 3205 transitions. [2022-03-15 14:41:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:41:49,655 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 [2022-03-15 14:41:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:49,656 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:41:49,656 INFO L226 Difference]: Without dead ends: 1166 [2022-03-15 14:41:49,656 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 [2022-03-15 14:41:49,657 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 352 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:49,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2853 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-15 14:41:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1065. [2022-03-15 14:41:49,667 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) [2022-03-15 14:41:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2644 transitions. [2022-03-15 14:41:49,669 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2644 transitions. Word has length 79 [2022-03-15 14:41:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:49,669 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2644 transitions. [2022-03-15 14:41:49,669 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) [2022-03-15 14:41:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2644 transitions. [2022-03-15 14:41:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:49,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:49,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:49,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-15 14:41:49,670 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1530247006, now seen corresponding path program 68 times [2022-03-15 14:41:49,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:49,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814889650] [2022-03-15 14:41:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:50,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:50,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814889650] [2022-03-15 14:41:50,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814889650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:50,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:50,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:41:50,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159453776] [2022-03-15 14:41:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:50,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:41:50,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:41:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:41:50,032 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) [2022-03-15 14:41:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:51,583 INFO L93 Difference]: Finished difference Result 1265 states and 3106 transitions. [2022-03-15 14:41:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 14:41:51,584 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 [2022-03-15 14:41:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:51,585 INFO L225 Difference]: With dead ends: 1265 [2022-03-15 14:41:51,585 INFO L226 Difference]: Without dead ends: 1085 [2022-03-15 14:41:51,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:41:51,586 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 310 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:51,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2632 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:41:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-03-15 14:41:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-03-15 14:41:51,594 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) [2022-03-15 14:41:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2582 transitions. [2022-03-15 14:41:51,595 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2582 transitions. Word has length 79 [2022-03-15 14:41:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:51,596 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2582 transitions. [2022-03-15 14:41:51,596 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) [2022-03-15 14:41:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2582 transitions. [2022-03-15 14:41:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:51,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:51,597 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] [2022-03-15 14:41:51,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-15 14:41:51,597 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1291134422, now seen corresponding path program 69 times [2022-03-15 14:41:51,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:51,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65038618] [2022-03-15 14:41:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:51,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:51,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:51,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65038618] [2022-03-15 14:41:51,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65038618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:51,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:51,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:51,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929167376] [2022-03-15 14:41:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:51,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:51,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:51,947 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) [2022-03-15 14:41:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:52,891 INFO L93 Difference]: Finished difference Result 1288 states and 3163 transitions. [2022-03-15 14:41:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:41:52,892 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 [2022-03-15 14:41:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:52,893 INFO L225 Difference]: With dead ends: 1288 [2022-03-15 14:41:52,893 INFO L226 Difference]: Without dead ends: 1069 [2022-03-15 14:41:52,893 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 [2022-03-15 14:41:52,894 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 295 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:52,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2632 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-03-15 14:41:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1037. [2022-03-15 14:41:52,902 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) [2022-03-15 14:41:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 2571 transitions. [2022-03-15 14:41:52,903 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 2571 transitions. Word has length 79 [2022-03-15 14:41:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:52,903 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 2571 transitions. [2022-03-15 14:41:52,903 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) [2022-03-15 14:41:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 2571 transitions. [2022-03-15 14:41:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:52,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:52,905 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] [2022-03-15 14:41:52,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-15 14:41:52,905 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1048765976, now seen corresponding path program 70 times [2022-03-15 14:41:52,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:52,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987786501] [2022-03-15 14:41:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:53,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:53,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987786501] [2022-03-15 14:41:53,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987786501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:53,224 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:53,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:53,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091628341] [2022-03-15 14:41:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:53,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:53,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:53,226 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) [2022-03-15 14:41:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:54,189 INFO L93 Difference]: Finished difference Result 1349 states and 3312 transitions. [2022-03-15 14:41:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:41:54,190 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 [2022-03-15 14:41:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:54,191 INFO L225 Difference]: With dead ends: 1349 [2022-03-15 14:41:54,192 INFO L226 Difference]: Without dead ends: 1064 [2022-03-15 14:41:54,192 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 [2022-03-15 14:41:54,192 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 [2022-03-15 14:41:54,192 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] [2022-03-15 14:41:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-03-15 14:41:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1033. [2022-03-15 14:41:54,203 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) [2022-03-15 14:41:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2564 transitions. [2022-03-15 14:41:54,205 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2564 transitions. Word has length 79 [2022-03-15 14:41:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:54,205 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2564 transitions. [2022-03-15 14:41:54,205 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) [2022-03-15 14:41:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2564 transitions. [2022-03-15 14:41:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:54,206 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:54,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:54,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-15 14:41:54,207 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 341960830, now seen corresponding path program 71 times [2022-03-15 14:41:54,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:54,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052618303] [2022-03-15 14:41:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:54,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:54,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052618303] [2022-03-15 14:41:54,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052618303] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:54,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:54,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:54,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801827465] [2022-03-15 14:41:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:54,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:54,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:54,541 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) [2022-03-15 14:41:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:55,375 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-03-15 14:41:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:41:55,375 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 [2022-03-15 14:41:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:55,376 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:41:55,377 INFO L226 Difference]: Without dead ends: 1157 [2022-03-15 14:41:55,377 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 [2022-03-15 14:41:55,377 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 260 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:55,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2284 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-03-15 14:41:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1101. [2022-03-15 14:41:55,385 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) [2022-03-15 14:41:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-03-15 14:41:55,387 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-03-15 14:41:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-03-15 14:41:55,387 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) [2022-03-15 14:41:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-03-15 14:41:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:55,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:55,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:55,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-15 14:41:55,388 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -511430336, now seen corresponding path program 72 times [2022-03-15 14:41:55,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:55,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143721649] [2022-03-15 14:41:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:55,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:55,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143721649] [2022-03-15 14:41:55,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143721649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:55,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:55,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:55,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362024802] [2022-03-15 14:41:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:55,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:55,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:55,748 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) [2022-03-15 14:41:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:56,575 INFO L93 Difference]: Finished difference Result 1282 states and 3172 transitions. [2022-03-15 14:41:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:41:56,575 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 [2022-03-15 14:41:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:56,576 INFO L225 Difference]: With dead ends: 1282 [2022-03-15 14:41:56,577 INFO L226 Difference]: Without dead ends: 1184 [2022-03-15 14:41:56,577 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 [2022-03-15 14:41:56,577 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:56,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2222 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-15 14:41:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1105. [2022-03-15 14:41:56,589 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) [2022-03-15 14:41:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-03-15 14:41:56,590 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-03-15 14:41:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-03-15 14:41:56,590 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) [2022-03-15 14:41:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-03-15 14:41:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:56,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:56,591 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] [2022-03-15 14:41:56,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-15 14:41:56,592 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 202806942, now seen corresponding path program 73 times [2022-03-15 14:41:56,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:56,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593406795] [2022-03-15 14:41:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:56,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:56,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593406795] [2022-03-15 14:41:56,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593406795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:56,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:56,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:56,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983556093] [2022-03-15 14:41:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:56,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:56,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:56,905 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) [2022-03-15 14:41:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:57,725 INFO L93 Difference]: Finished difference Result 1250 states and 3088 transitions. [2022-03-15 14:41:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:41:57,726 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 [2022-03-15 14:41:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:57,727 INFO L225 Difference]: With dead ends: 1250 [2022-03-15 14:41:57,727 INFO L226 Difference]: Without dead ends: 1137 [2022-03-15 14:41:57,728 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 [2022-03-15 14:41:57,728 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 279 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:57,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2283 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-03-15 14:41:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1093. [2022-03-15 14:41:57,736 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) [2022-03-15 14:41:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-03-15 14:41:57,737 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-03-15 14:41:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:57,738 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-03-15 14:41:57,738 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) [2022-03-15 14:41:57,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-03-15 14:41:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:57,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:57,739 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] [2022-03-15 14:41:57,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-15 14:41:57,740 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:57,740 INFO L85 PathProgramCache]: Analyzing trace with hash 761765534, now seen corresponding path program 74 times [2022-03-15 14:41:57,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:57,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318291560] [2022-03-15 14:41:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:57,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:58,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:58,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318291560] [2022-03-15 14:41:58,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318291560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:58,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:58,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:58,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766031606] [2022-03-15 14:41:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:58,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:58,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:58,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:58,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:58,056 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) [2022-03-15 14:41:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:59,062 INFO L93 Difference]: Finished difference Result 1300 states and 3213 transitions. [2022-03-15 14:41:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:41:59,062 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 [2022-03-15 14:41:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:59,064 INFO L225 Difference]: With dead ends: 1300 [2022-03-15 14:41:59,064 INFO L226 Difference]: Without dead ends: 1202 [2022-03-15 14:41:59,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:41:59,064 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 254 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:59,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2640 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-03-15 14:41:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1117. [2022-03-15 14:41:59,074 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) [2022-03-15 14:41:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-15 14:41:59,075 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-15 14:41:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:59,075 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-15 14:41:59,075 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) [2022-03-15 14:41:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-15 14:41:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:41:59,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:59,076 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] [2022-03-15 14:41:59,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-15 14:41:59,077 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash 7935834, now seen corresponding path program 75 times [2022-03-15 14:41:59,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:59,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475495679] [2022-03-15 14:41:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:59,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:59,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475495679] [2022-03-15 14:41:59,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475495679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:41:59,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:41:59,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:41:59,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043576294] [2022-03-15 14:41:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:41:59,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:41:59,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:41:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:41:59,459 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) [2022-03-15 14:42:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:00,406 INFO L93 Difference]: Finished difference Result 1268 states and 3125 transitions. [2022-03-15 14:42:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:42:00,406 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 [2022-03-15 14:42:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:00,408 INFO L225 Difference]: With dead ends: 1268 [2022-03-15 14:42:00,408 INFO L226 Difference]: Without dead ends: 1117 [2022-03-15 14:42:00,408 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 [2022-03-15 14:42:00,408 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 253 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:00,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2482 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-03-15 14:42:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1077. [2022-03-15 14:42:00,417 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) [2022-03-15 14:42:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-03-15 14:42:00,419 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-03-15 14:42:00,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:00,419 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-03-15 14:42:00,419 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) [2022-03-15 14:42:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-03-15 14:42:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:00,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:00,420 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] [2022-03-15 14:42:00,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-15 14:42:00,420 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1362577762, now seen corresponding path program 76 times [2022-03-15 14:42:00,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:00,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238054291] [2022-03-15 14:42:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:00,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:00,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238054291] [2022-03-15 14:42:00,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238054291] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:00,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:00,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:00,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555935509] [2022-03-15 14:42:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:00,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:00,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:00,749 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) [2022-03-15 14:42:03,734 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 [] [2022-03-15 14:42:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:03,957 INFO L93 Difference]: Finished difference Result 1415 states and 3469 transitions. [2022-03-15 14:42:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:42:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:42:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:03,959 INFO L225 Difference]: With dead ends: 1415 [2022-03-15 14:42:03,959 INFO L226 Difference]: Without dead ends: 1317 [2022-03-15 14:42:03,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=2321, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:42:03,960 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 349 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:03,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2807 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:42:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-03-15 14:42:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1093. [2022-03-15 14:42:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.488095238095238) internal successors, (2717), 1092 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) [2022-03-15 14:42:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2717 transitions. [2022-03-15 14:42:03,973 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2717 transitions. Word has length 79 [2022-03-15 14:42:03,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:03,973 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2717 transitions. [2022-03-15 14:42:03,973 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) [2022-03-15 14:42:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2717 transitions. [2022-03-15 14:42:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:03,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:03,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:03,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-15 14:42:03,975 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -648340484, now seen corresponding path program 77 times [2022-03-15 14:42:03,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:03,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247117076] [2022-03-15 14:42:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:04,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:04,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247117076] [2022-03-15 14:42:04,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247117076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:04,320 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:04,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:04,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563591217] [2022-03-15 14:42:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:04,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:04,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:04,321 INFO L87 Difference]: Start difference. First operand 1093 states and 2717 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) [2022-03-15 14:42:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:05,406 INFO L93 Difference]: Finished difference Result 1307 states and 3226 transitions. [2022-03-15 14:42:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:42:05,407 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 [2022-03-15 14:42:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:05,408 INFO L225 Difference]: With dead ends: 1307 [2022-03-15 14:42:05,408 INFO L226 Difference]: Without dead ends: 1156 [2022-03-15 14:42:05,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2140, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:42:05,409 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 336 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:05,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2642 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:42:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-03-15 14:42:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1081. [2022-03-15 14:42:05,419 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) [2022-03-15 14:42:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-03-15 14:42:05,421 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-03-15 14:42:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:05,421 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-03-15 14:42:05,421 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) [2022-03-15 14:42:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-03-15 14:42:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:05,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:05,422 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] [2022-03-15 14:42:05,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-15 14:42:05,422 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1176559900, now seen corresponding path program 78 times [2022-03-15 14:42:05,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:05,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551204530] [2022-03-15 14:42:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:05,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:05,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551204530] [2022-03-15 14:42:05,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551204530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:05,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:05,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:05,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552674665] [2022-03-15 14:42:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:05,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:05,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:05,760 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) [2022-03-15 14:42:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:06,625 INFO L93 Difference]: Finished difference Result 1279 states and 3149 transitions. [2022-03-15 14:42:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:42:06,626 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 [2022-03-15 14:42:06,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:06,627 INFO L225 Difference]: With dead ends: 1279 [2022-03-15 14:42:06,627 INFO L226 Difference]: Without dead ends: 1109 [2022-03-15 14:42:06,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:42:06,627 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 290 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:06,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2438 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-15 14:42:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1069. [2022-03-15 14:42:06,636 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) [2022-03-15 14:42:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-03-15 14:42:06,637 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-03-15 14:42:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:06,637 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-03-15 14:42:06,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-03-15 14:42:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:06,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:06,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:06,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-15 14:42:06,638 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1297874624, now seen corresponding path program 79 times [2022-03-15 14:42:06,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:06,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215433783] [2022-03-15 14:42:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:06,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:06,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215433783] [2022-03-15 14:42:06,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215433783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:06,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:06,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:06,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656122298] [2022-03-15 14:42:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:06,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:06,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:06,963 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) [2022-03-15 14:42:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:08,221 INFO L93 Difference]: Finished difference Result 1333 states and 3285 transitions. [2022-03-15 14:42:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:42:08,222 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 [2022-03-15 14:42:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:08,223 INFO L225 Difference]: With dead ends: 1333 [2022-03-15 14:42:08,223 INFO L226 Difference]: Without dead ends: 1235 [2022-03-15 14:42:08,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:42:08,224 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:08,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2679 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:42:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-15 14:42:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1117. [2022-03-15 14:42:08,233 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) [2022-03-15 14:42:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-03-15 14:42:08,234 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-03-15 14:42:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-03-15 14:42:08,234 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) [2022-03-15 14:42:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-03-15 14:42:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:08,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:08,235 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] [2022-03-15 14:42:08,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-15 14:42:08,236 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2051704324, now seen corresponding path program 80 times [2022-03-15 14:42:08,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:08,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017942445] [2022-03-15 14:42:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:08,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:08,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017942445] [2022-03-15 14:42:08,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017942445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:08,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:08,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:08,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028528016] [2022-03-15 14:42:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:08,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:08,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:08,600 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) [2022-03-15 14:42:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:09,838 INFO L93 Difference]: Finished difference Result 1301 states and 3197 transitions. [2022-03-15 14:42:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:09,838 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 [2022-03-15 14:42:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:09,840 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:42:09,840 INFO L226 Difference]: Without dead ends: 1166 [2022-03-15 14:42:09,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:42:09,840 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 271 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:09,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2933 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:42:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-15 14:42:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1093. [2022-03-15 14:42:09,850 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) [2022-03-15 14:42:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-03-15 14:42:09,851 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-03-15 14:42:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:09,851 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-03-15 14:42:09,851 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) [2022-03-15 14:42:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-03-15 14:42:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:09,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:09,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:09,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-15 14:42:09,853 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash 875257408, now seen corresponding path program 81 times [2022-03-15 14:42:09,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:09,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094652499] [2022-03-15 14:42:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:09,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:10,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:10,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094652499] [2022-03-15 14:42:10,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094652499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:10,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:10,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:10,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130926799] [2022-03-15 14:42:10,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:10,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:10,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:10,242 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) [2022-03-15 14:42:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:11,247 INFO L93 Difference]: Finished difference Result 1277 states and 3131 transitions. [2022-03-15 14:42:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:42:11,247 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 [2022-03-15 14:42:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:11,249 INFO L225 Difference]: With dead ends: 1277 [2022-03-15 14:42:11,249 INFO L226 Difference]: Without dead ends: 1081 [2022-03-15 14:42:11,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:42:11,249 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 287 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:11,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2448 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-03-15 14:42:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1053. [2022-03-15 14:42:11,258 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) [2022-03-15 14:42:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-15 14:42:11,259 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-15 14:42:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:11,259 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-15 14:42:11,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-15 14:42:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:11,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:11,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:11,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-15 14:42:11,260 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1273278144, now seen corresponding path program 82 times [2022-03-15 14:42:11,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:11,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165390748] [2022-03-15 14:42:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:11,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:11,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165390748] [2022-03-15 14:42:11,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165390748] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:11,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:11,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:42:11,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074922345] [2022-03-15 14:42:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:11,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:42:11,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:42:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:42:11,595 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) [2022-03-15 14:42:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:13,108 INFO L93 Difference]: Finished difference Result 1365 states and 3369 transitions. [2022-03-15 14:42:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:42:13,108 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 [2022-03-15 14:42:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:13,110 INFO L225 Difference]: With dead ends: 1365 [2022-03-15 14:42:13,110 INFO L226 Difference]: Without dead ends: 1267 [2022-03-15 14:42:13,110 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 [2022-03-15 14:42:13,110 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 307 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:13,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 3127 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:42:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-15 14:42:13,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1105. [2022-03-15 14:42:13,121 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) [2022-03-15 14:42:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-03-15 14:42:13,122 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-03-15 14:42:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:13,123 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-03-15 14:42:13,123 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) [2022-03-15 14:42:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-03-15 14:42:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:13,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:13,124 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] [2022-03-15 14:42:13,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-15 14:42:13,124 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2027107844, now seen corresponding path program 83 times [2022-03-15 14:42:13,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:13,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109617476] [2022-03-15 14:42:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:13,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:13,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109617476] [2022-03-15 14:42:13,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109617476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:13,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:13,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:42:13,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239734079] [2022-03-15 14:42:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:13,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:42:13,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:42:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:42:13,481 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) [2022-03-15 14:42:16,493 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 [] [2022-03-15 14:42:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:16,820 INFO L93 Difference]: Finished difference Result 1333 states and 3281 transitions. [2022-03-15 14:42:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:42:16,820 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 [2022-03-15 14:42:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:16,822 INFO L225 Difference]: With dead ends: 1333 [2022-03-15 14:42:16,822 INFO L226 Difference]: Without dead ends: 1198 [2022-03-15 14:42:16,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:42:16,822 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 309 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:16,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2969 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1130 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:42:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-15 14:42:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1093. [2022-03-15 14:42:16,832 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) [2022-03-15 14:42:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-03-15 14:42:16,834 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-03-15 14:42:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:16,834 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-03-15 14:42:16,834 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) [2022-03-15 14:42:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-03-15 14:42:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:16,836 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:16,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-15 14:42:16,836 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1739640036, now seen corresponding path program 84 times [2022-03-15 14:42:16,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:16,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804700321] [2022-03-15 14:42:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:17,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:17,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804700321] [2022-03-15 14:42:17,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804700321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:17,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:17,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:17,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546383623] [2022-03-15 14:42:17,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:17,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:17,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:17,159 INFO L87 Difference]: Start difference. First operand 1093 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) [2022-03-15 14:42:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:18,165 INFO L93 Difference]: Finished difference Result 1297 states and 3186 transitions. [2022-03-15 14:42:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:42:18,165 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 [2022-03-15 14:42:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:18,167 INFO L225 Difference]: With dead ends: 1297 [2022-03-15 14:42:18,167 INFO L226 Difference]: Without dead ends: 1105 [2022-03-15 14:42:18,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:42:18,167 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 323 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:18,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2633 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-03-15 14:42:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1057. [2022-03-15 14:42:18,176 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) [2022-03-15 14:42:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2618 transitions. [2022-03-15 14:42:18,177 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2618 transitions. Word has length 79 [2022-03-15 14:42:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:18,177 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2618 transitions. [2022-03-15 14:42:18,177 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) [2022-03-15 14:42:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2618 transitions. [2022-03-15 14:42:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:18,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:18,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-15 14:42:18,179 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash 660741304, now seen corresponding path program 85 times [2022-03-15 14:42:18,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:18,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092066034] [2022-03-15 14:42:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:18,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:18,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092066034] [2022-03-15 14:42:18,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092066034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:18,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:18,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:18,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321609707] [2022-03-15 14:42:18,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:18,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:18,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:18,496 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) [2022-03-15 14:42:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:19,327 INFO L93 Difference]: Finished difference Result 1300 states and 3188 transitions. [2022-03-15 14:42:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:42:19,327 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 [2022-03-15 14:42:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:19,329 INFO L225 Difference]: With dead ends: 1300 [2022-03-15 14:42:19,329 INFO L226 Difference]: Without dead ends: 1073 [2022-03-15 14:42:19,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:42:19,329 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 298 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:19,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2401 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-15 14:42:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1045. [2022-03-15 14:42:19,339 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) [2022-03-15 14:42:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2585 transitions. [2022-03-15 14:42:19,341 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2585 transitions. Word has length 79 [2022-03-15 14:42:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:19,341 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2585 transitions. [2022-03-15 14:42:19,341 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) [2022-03-15 14:42:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2585 transitions. [2022-03-15 14:42:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:19,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:19,342 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] [2022-03-15 14:42:19,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-15 14:42:19,343 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1125652126, now seen corresponding path program 86 times [2022-03-15 14:42:19,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:19,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85455147] [2022-03-15 14:42:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:19,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:19,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85455147] [2022-03-15 14:42:19,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85455147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:19,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:19,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:42:19,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339977703] [2022-03-15 14:42:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:19,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:42:19,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:42:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:42:19,759 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) [2022-03-15 14:42:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:21,672 INFO L93 Difference]: Finished difference Result 1361 states and 3354 transitions. [2022-03-15 14:42:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:42:21,672 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 [2022-03-15 14:42:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:21,674 INFO L225 Difference]: With dead ends: 1361 [2022-03-15 14:42:21,674 INFO L226 Difference]: Without dead ends: 1263 [2022-03-15 14:42:21,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:42:21,675 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 344 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:21,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2842 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 14:42:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-15 14:42:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1105. [2022-03-15 14:42:21,687 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) [2022-03-15 14:42:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-03-15 14:42:21,689 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-03-15 14:42:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:21,689 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-03-15 14:42:21,689 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) [2022-03-15 14:42:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-03-15 14:42:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:21,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:21,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:21,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-15 14:42:21,690 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:21,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash 371822426, now seen corresponding path program 87 times [2022-03-15 14:42:21,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:21,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239592362] [2022-03-15 14:42:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:22,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:22,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239592362] [2022-03-15 14:42:22,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239592362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:22,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:22,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:42:22,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508762229] [2022-03-15 14:42:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:22,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:42:22,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:42:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:42:22,109 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) [2022-03-15 14:42:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:23,471 INFO L93 Difference]: Finished difference Result 1317 states and 3237 transitions. [2022-03-15 14:42:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:42:23,471 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 [2022-03-15 14:42:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:23,473 INFO L225 Difference]: With dead ends: 1317 [2022-03-15 14:42:23,473 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:42:23,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=240, Invalid=2730, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:42:23,473 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 346 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:23,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2689 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:42:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:42:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1081. [2022-03-15 14:42:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.477777777777778) internal successors, (2676), 1080 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2676 transitions. [2022-03-15 14:42:23,485 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2676 transitions. Word has length 79 [2022-03-15 14:42:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:23,485 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2676 transitions. [2022-03-15 14:42:23,485 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) [2022-03-15 14:42:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2676 transitions. [2022-03-15 14:42:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:23,486 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:23,486 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] [2022-03-15 14:42:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-15 14:42:23,487 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash -996183138, now seen corresponding path program 88 times [2022-03-15 14:42:23,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:23,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591411596] [2022-03-15 14:42:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:23,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:23,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591411596] [2022-03-15 14:42:23,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591411596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:23,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:23,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:23,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970577214] [2022-03-15 14:42:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:23,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:23,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:23,889 INFO L87 Difference]: Start difference. First operand 1081 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:25,017 INFO L93 Difference]: Finished difference Result 1281 states and 3138 transitions. [2022-03-15 14:42:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:42:25,017 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 [2022-03-15 14:42:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:25,018 INFO L225 Difference]: With dead ends: 1281 [2022-03-15 14:42:25,018 INFO L226 Difference]: Without dead ends: 1101 [2022-03-15 14:42:25,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:42:25,019 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 303 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:25,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2611 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:42:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-03-15 14:42:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1057. [2022-03-15 14:42:25,028 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) [2022-03-15 14:42:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2614 transitions. [2022-03-15 14:42:25,029 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2614 transitions. Word has length 79 [2022-03-15 14:42:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:25,029 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2614 transitions. [2022-03-15 14:42:25,029 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) [2022-03-15 14:42:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2614 transitions. [2022-03-15 14:42:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:25,030 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:25,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:25,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-15 14:42:25,031 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1235295722, now seen corresponding path program 89 times [2022-03-15 14:42:25,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:25,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679479251] [2022-03-15 14:42:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:25,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:25,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:25,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679479251] [2022-03-15 14:42:25,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679479251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:25,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:25,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:25,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442915589] [2022-03-15 14:42:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:25,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:25,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:25,389 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) [2022-03-15 14:42:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:26,219 INFO L93 Difference]: Finished difference Result 1304 states and 3195 transitions. [2022-03-15 14:42:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:42:26,219 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 [2022-03-15 14:42:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:26,221 INFO L225 Difference]: With dead ends: 1304 [2022-03-15 14:42:26,221 INFO L226 Difference]: Without dead ends: 1061 [2022-03-15 14:42:26,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:42:26,221 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 312 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:26,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2340 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-15 14:42:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-15 14:42:26,231 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) [2022-03-15 14:42:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-15 14:42:26,232 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-15 14:42:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:26,232 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-15 14:42:26,232 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) [2022-03-15 14:42:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-15 14:42:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:26,233 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:26,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-15 14:42:26,234 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash -652823478, now seen corresponding path program 90 times [2022-03-15 14:42:26,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:26,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217733233] [2022-03-15 14:42:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:26,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:26,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217733233] [2022-03-15 14:42:26,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217733233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:26,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:26,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:26,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008292988] [2022-03-15 14:42:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:26,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:26,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:26,632 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) [2022-03-15 14:42:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:27,493 INFO L93 Difference]: Finished difference Result 1298 states and 3178 transitions. [2022-03-15 14:42:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:42:27,493 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 [2022-03-15 14:42:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:27,495 INFO L225 Difference]: With dead ends: 1298 [2022-03-15 14:42:27,495 INFO L226 Difference]: Without dead ends: 1029 [2022-03-15 14:42:27,495 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 [2022-03-15 14:42:27,495 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:27,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2392 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-03-15 14:42:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1013. [2022-03-15 14:42:27,504 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) [2022-03-15 14:42:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2509 transitions. [2022-03-15 14:42:27,505 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2509 transitions. Word has length 79 [2022-03-15 14:42:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:27,505 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2509 transitions. [2022-03-15 14:42:27,505 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) [2022-03-15 14:42:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2509 transitions. [2022-03-15 14:42:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:27,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:27,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-15 14:42:27,507 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1342808418, now seen corresponding path program 91 times [2022-03-15 14:42:27,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:27,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054357834] [2022-03-15 14:42:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:27,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:27,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054357834] [2022-03-15 14:42:27,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054357834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:27,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:27,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:42:27,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602599064] [2022-03-15 14:42:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:27,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:42:27,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:42:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:42:27,869 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) [2022-03-15 14:42:31,157 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 [] [2022-03-15 14:42:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:31,336 INFO L93 Difference]: Finished difference Result 1321 states and 3256 transitions. [2022-03-15 14:42:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:42:31,336 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 [2022-03-15 14:42:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:31,338 INFO L225 Difference]: With dead ends: 1321 [2022-03-15 14:42:31,338 INFO L226 Difference]: Without dead ends: 1223 [2022-03-15 14:42:31,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2942, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:42:31,338 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 328 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:31,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2982 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1146 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:42:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-15 14:42:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1053. [2022-03-15 14:42:31,348 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) [2022-03-15 14:42:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2615 transitions. [2022-03-15 14:42:31,349 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2615 transitions. Word has length 79 [2022-03-15 14:42:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:31,349 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2615 transitions. [2022-03-15 14:42:31,349 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) [2022-03-15 14:42:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2615 transitions. [2022-03-15 14:42:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:31,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:31,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-15 14:42:31,351 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:31,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -628571140, now seen corresponding path program 92 times [2022-03-15 14:42:31,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:31,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562344813] [2022-03-15 14:42:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:31,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:31,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562344813] [2022-03-15 14:42:31,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562344813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:31,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:31,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:42:31,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517902871] [2022-03-15 14:42:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:31,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:42:31,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:42:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:42:31,756 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) [2022-03-15 14:42:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:33,577 INFO L93 Difference]: Finished difference Result 1293 states and 3183 transitions. [2022-03-15 14:42:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:42:33,577 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 [2022-03-15 14:42:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:33,579 INFO L225 Difference]: With dead ends: 1293 [2022-03-15 14:42:33,579 INFO L226 Difference]: Without dead ends: 1142 [2022-03-15 14:42:33,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2941, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:42:33,579 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 350 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:33,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2825 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:42:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-03-15 14:42:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1053. [2022-03-15 14:42:33,588 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) [2022-03-15 14:42:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-03-15 14:42:33,589 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-03-15 14:42:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-03-15 14:42:33,589 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) [2022-03-15 14:42:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-03-15 14:42:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:33,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:33,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:33,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-15 14:42:33,590 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 830323614, now seen corresponding path program 93 times [2022-03-15 14:42:33,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:33,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094252127] [2022-03-15 14:42:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:33,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:33,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094252127] [2022-03-15 14:42:33,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094252127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:33,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:33,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:42:33,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765128986] [2022-03-15 14:42:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:33,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:42:33,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:42:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:42:33,918 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) [2022-03-15 14:42:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:34,981 INFO L93 Difference]: Finished difference Result 1241 states and 3040 transitions. [2022-03-15 14:42:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:42:34,981 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 [2022-03-15 14:42:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:34,982 INFO L225 Difference]: With dead ends: 1241 [2022-03-15 14:42:34,982 INFO L226 Difference]: Without dead ends: 1061 [2022-03-15 14:42:34,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:42:34,983 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 289 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:34,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2876 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-03-15 14:42:34,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-03-15 14:42:34,991 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) [2022-03-15 14:42:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-03-15 14:42:34,992 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-03-15 14:42:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:34,992 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-03-15 14:42:34,992 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) [2022-03-15 14:42:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-03-15 14:42:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:34,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:34,994 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] [2022-03-15 14:42:34,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-15 14:42:34,994 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 591211030, now seen corresponding path program 94 times [2022-03-15 14:42:34,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:34,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900065528] [2022-03-15 14:42:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:35,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:35,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900065528] [2022-03-15 14:42:35,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900065528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:35,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:35,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:35,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340461988] [2022-03-15 14:42:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:35,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:35,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:35,316 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) [2022-03-15 14:42:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:36,184 INFO L93 Difference]: Finished difference Result 1264 states and 3097 transitions. [2022-03-15 14:42:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:36,184 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 [2022-03-15 14:42:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:36,186 INFO L225 Difference]: With dead ends: 1264 [2022-03-15 14:42:36,186 INFO L226 Difference]: Without dead ends: 1045 [2022-03-15 14:42:36,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:42:36,186 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 300 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:36,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2618 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-03-15 14:42:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1025. [2022-03-15 14:42:36,196 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) [2022-03-15 14:42:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2538 transitions. [2022-03-15 14:42:36,198 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2538 transitions. Word has length 79 [2022-03-15 14:42:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:36,198 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 2538 transitions. [2022-03-15 14:42:36,198 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) [2022-03-15 14:42:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2538 transitions. [2022-03-15 14:42:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:36,200 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:36,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:36,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-15 14:42:36,201 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1748689368, now seen corresponding path program 95 times [2022-03-15 14:42:36,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:36,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436964314] [2022-03-15 14:42:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:36,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:36,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436964314] [2022-03-15 14:42:36,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436964314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:36,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:36,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:36,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347616876] [2022-03-15 14:42:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:36,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:36,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:36,546 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) [2022-03-15 14:42:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:37,481 INFO L93 Difference]: Finished difference Result 1294 states and 3167 transitions. [2022-03-15 14:42:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:42:37,482 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 [2022-03-15 14:42:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:37,483 INFO L225 Difference]: With dead ends: 1294 [2022-03-15 14:42:37,483 INFO L226 Difference]: Without dead ends: 1033 [2022-03-15 14:42:37,483 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 [2022-03-15 14:42:37,483 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 313 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:37,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2819 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-03-15 14:42:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1017. [2022-03-15 14:42:37,491 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) [2022-03-15 14:42:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2516 transitions. [2022-03-15 14:42:37,493 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2516 transitions. Word has length 79 [2022-03-15 14:42:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:37,493 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2516 transitions. [2022-03-15 14:42:37,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2516 transitions. [2022-03-15 14:42:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:37,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:37,494 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] [2022-03-15 14:42:37,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-15 14:42:37,494 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 644605002, now seen corresponding path program 96 times [2022-03-15 14:42:37,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:37,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857845412] [2022-03-15 14:42:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:37,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:37,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857845412] [2022-03-15 14:42:37,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857845412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:37,846 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:37,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:37,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333994785] [2022-03-15 14:42:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:37,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:37,847 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) [2022-03-15 14:42:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:38,699 INFO L93 Difference]: Finished difference Result 1289 states and 3147 transitions. [2022-03-15 14:42:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:42:38,699 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 [2022-03-15 14:42:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:38,701 INFO L225 Difference]: With dead ends: 1289 [2022-03-15 14:42:38,701 INFO L226 Difference]: Without dead ends: 991 [2022-03-15 14:42:38,701 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 [2022-03-15 14:42:38,701 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 311 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:38,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2683 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-03-15 14:42:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-03-15 14:42:38,709 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) [2022-03-15 14:42:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2465 transitions. [2022-03-15 14:42:38,710 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2465 transitions. Word has length 79 [2022-03-15 14:42:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:38,710 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 2465 transitions. [2022-03-15 14:42:38,710 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) [2022-03-15 14:42:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2465 transitions. [2022-03-15 14:42:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:38,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:38,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:38,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-15 14:42:38,712 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1403728634, now seen corresponding path program 97 times [2022-03-15 14:42:38,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:38,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270957770] [2022-03-15 14:42:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:38,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:38,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270957770] [2022-03-15 14:42:38,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270957770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:38,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:38,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-15 14:42:38,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952914509] [2022-03-15 14:42:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:38,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:42:38,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:42:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:42:38,993 INFO L87 Difference]: Start difference. First operand 991 states and 2465 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) [2022-03-15 14:42:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:39,838 INFO L93 Difference]: Finished difference Result 1317 states and 3291 transitions. [2022-03-15 14:42:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:42:39,838 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 [2022-03-15 14:42:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:39,840 INFO L225 Difference]: With dead ends: 1317 [2022-03-15 14:42:39,840 INFO L226 Difference]: Without dead ends: 1187 [2022-03-15 14:42:39,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:42:39,840 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 233 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:39,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 2224 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-03-15 14:42:39,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1095. [2022-03-15 14:42:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.5073126142595976) internal successors, (2743), 1094 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) [2022-03-15 14:42:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2743 transitions. [2022-03-15 14:42:39,851 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2743 transitions. Word has length 79 [2022-03-15 14:42:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:39,851 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2743 transitions. [2022-03-15 14:42:39,851 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) [2022-03-15 14:42:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2743 transitions. [2022-03-15 14:42:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:39,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:39,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:39,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-15 14:42:39,853 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2037847496, now seen corresponding path program 98 times [2022-03-15 14:42:39,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:39,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737074573] [2022-03-15 14:42:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:40,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:40,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737074573] [2022-03-15 14:42:40,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737074573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:40,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:40,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:40,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356372168] [2022-03-15 14:42:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:40,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:40,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:40,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:40,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:40,179 INFO L87 Difference]: Start difference. First operand 1095 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) [2022-03-15 14:42:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:41,106 INFO L93 Difference]: Finished difference Result 1324 states and 3300 transitions. [2022-03-15 14:42:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:41,107 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 [2022-03-15 14:42:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:41,108 INFO L225 Difference]: With dead ends: 1324 [2022-03-15 14:42:41,108 INFO L226 Difference]: Without dead ends: 1226 [2022-03-15 14:42:41,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:42:41,109 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 316 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:41,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2350 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-03-15 14:42:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1099. [2022-03-15 14:42:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.504553734061931) internal successors, (2750), 1098 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) [2022-03-15 14:42:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2750 transitions. [2022-03-15 14:42:41,121 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2750 transitions. Word has length 79 [2022-03-15 14:42:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:41,121 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2750 transitions. [2022-03-15 14:42:41,122 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) [2022-03-15 14:42:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2750 transitions. [2022-03-15 14:42:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:41,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:41,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:41,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-15 14:42:41,124 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1542882522, now seen corresponding path program 99 times [2022-03-15 14:42:41,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:41,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653484968] [2022-03-15 14:42:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:41,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:41,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:41,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653484968] [2022-03-15 14:42:41,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653484968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:41,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:41,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:41,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696821771] [2022-03-15 14:42:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:41,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:41,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:41,427 INFO L87 Difference]: Start difference. First operand 1099 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) [2022-03-15 14:42:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:42,316 INFO L93 Difference]: Finished difference Result 1292 states and 3216 transitions. [2022-03-15 14:42:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:42:42,316 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 [2022-03-15 14:42:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:42,317 INFO L225 Difference]: With dead ends: 1292 [2022-03-15 14:42:42,318 INFO L226 Difference]: Without dead ends: 1179 [2022-03-15 14:42:42,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:42:42,318 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 285 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:42,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2346 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-03-15 14:42:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1087. [2022-03-15 14:42:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.505524861878453) internal successors, (2721), 1086 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) [2022-03-15 14:42:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2721 transitions. [2022-03-15 14:42:42,329 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2721 transitions. Word has length 79 [2022-03-15 14:42:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:42,329 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2721 transitions. [2022-03-15 14:42:42,329 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) [2022-03-15 14:42:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2721 transitions. [2022-03-15 14:42:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:42,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:42,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:42,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-15 14:42:42,331 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -983923930, now seen corresponding path program 100 times [2022-03-15 14:42:42,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:42,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194615954] [2022-03-15 14:42:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:42,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:42,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194615954] [2022-03-15 14:42:42,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194615954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:42,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:42,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:42,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726032923] [2022-03-15 14:42:42,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:42,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:42,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:42,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:42,656 INFO L87 Difference]: Start difference. First operand 1087 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) [2022-03-15 14:42:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:43,675 INFO L93 Difference]: Finished difference Result 1322 states and 3290 transitions. [2022-03-15 14:42:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:42:43,676 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 [2022-03-15 14:42:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:43,677 INFO L225 Difference]: With dead ends: 1322 [2022-03-15 14:42:43,677 INFO L226 Difference]: Without dead ends: 1224 [2022-03-15 14:42:43,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:42:43,678 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 253 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:43,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2499 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:42:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-03-15 14:42:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1111. [2022-03-15 14:42:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5036036036036036) internal successors, (2779), 1110 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) [2022-03-15 14:42:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2779 transitions. [2022-03-15 14:42:43,703 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2779 transitions. Word has length 79 [2022-03-15 14:42:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:43,703 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2779 transitions. [2022-03-15 14:42:43,703 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) [2022-03-15 14:42:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2779 transitions. [2022-03-15 14:42:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:43,705 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:43,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:43,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-15 14:42:43,705 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1737753630, now seen corresponding path program 101 times [2022-03-15 14:42:43,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:43,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549549948] [2022-03-15 14:42:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:44,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:44,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549549948] [2022-03-15 14:42:44,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549549948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:44,013 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:44,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:44,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820988165] [2022-03-15 14:42:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:44,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:44,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:44,014 INFO L87 Difference]: Start difference. First operand 1111 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) [2022-03-15 14:42:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:44,915 INFO L93 Difference]: Finished difference Result 1305 states and 3237 transitions. [2022-03-15 14:42:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:42:44,916 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 [2022-03-15 14:42:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:44,917 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:42:44,917 INFO L226 Difference]: Without dead ends: 1154 [2022-03-15 14:42:44,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:42:44,918 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 287 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:44,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2249 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-15 14:42:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1071. [2022-03-15 14:42:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.5018691588785047) internal successors, (2677), 1070 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) [2022-03-15 14:42:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2677 transitions. [2022-03-15 14:42:44,928 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2677 transitions. Word has length 79 [2022-03-15 14:42:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2677 transitions. [2022-03-15 14:42:44,929 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) [2022-03-15 14:42:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2677 transitions. [2022-03-15 14:42:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:44,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:44,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:44,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-15 14:42:44,930 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2031800602, now seen corresponding path program 102 times [2022-03-15 14:42:44,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:44,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546018662] [2022-03-15 14:42:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:45,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:45,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546018662] [2022-03-15 14:42:45,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546018662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:45,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:45,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:45,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607068801] [2022-03-15 14:42:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:45,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:45,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:45,221 INFO L87 Difference]: Start difference. First operand 1071 states and 2677 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) [2022-03-15 14:42:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:46,125 INFO L93 Difference]: Finished difference Result 1313 states and 3272 transitions. [2022-03-15 14:42:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:46,126 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 [2022-03-15 14:42:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:46,127 INFO L225 Difference]: With dead ends: 1313 [2022-03-15 14:42:46,127 INFO L226 Difference]: Without dead ends: 1183 [2022-03-15 14:42:46,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:42:46,128 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 299 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:46,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2270 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-15 14:42:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1083. [2022-03-15 14:42:46,138 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) [2022-03-15 14:42:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-15 14:42:46,140 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-15 14:42:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:46,140 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-15 14:42:46,140 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) [2022-03-15 14:42:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-15 14:42:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:46,141 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:46,141 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] [2022-03-15 14:42:46,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-15 14:42:46,142 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1409775528, now seen corresponding path program 103 times [2022-03-15 14:42:46,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:46,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2758658] [2022-03-15 14:42:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:46,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:46,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2758658] [2022-03-15 14:42:46,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2758658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:46,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:46,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:46,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64418158] [2022-03-15 14:42:46,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:46,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:46,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:46,449 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) [2022-03-15 14:42:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:47,479 INFO L93 Difference]: Finished difference Result 1304 states and 3241 transitions. [2022-03-15 14:42:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:42:47,480 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 [2022-03-15 14:42:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:47,481 INFO L225 Difference]: With dead ends: 1304 [2022-03-15 14:42:47,481 INFO L226 Difference]: Without dead ends: 1206 [2022-03-15 14:42:47,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=2135, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:42:47,482 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 303 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:47,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2639 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-15 14:42:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1087. [2022-03-15 14:42:47,490 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) [2022-03-15 14:42:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:42:47,491 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:42:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:47,492 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:42:47,492 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) [2022-03-15 14:42:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:42:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:47,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:47,493 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] [2022-03-15 14:42:47,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-15 14:42:47,493 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2124012806, now seen corresponding path program 104 times [2022-03-15 14:42:47,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:47,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011932397] [2022-03-15 14:42:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:47,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:47,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011932397] [2022-03-15 14:42:47,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011932397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:47,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:47,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:47,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088289639] [2022-03-15 14:42:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:47,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:47,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:47,805 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) [2022-03-15 14:42:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:48,783 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-03-15 14:42:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:42:48,784 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 [2022-03-15 14:42:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:48,785 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:42:48,785 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 14:42:48,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:42:48,786 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 292 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:48,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2547 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 14:42:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1075. [2022-03-15 14:42:48,795 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) [2022-03-15 14:42:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-03-15 14:42:48,796 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-03-15 14:42:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:48,796 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-03-15 14:42:48,796 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) [2022-03-15 14:42:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-03-15 14:42:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:48,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:48,797 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] [2022-03-15 14:42:48,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-15 14:42:48,798 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1845506264, now seen corresponding path program 105 times [2022-03-15 14:42:48,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:48,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322581686] [2022-03-15 14:42:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:48,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:49,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:49,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322581686] [2022-03-15 14:42:49,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322581686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:49,087 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:49,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:49,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137359205] [2022-03-15 14:42:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:49,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:49,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:49,088 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) [2022-03-15 14:42:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:49,906 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-15 14:42:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:42:49,907 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 [2022-03-15 14:42:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:49,908 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:42:49,908 INFO L226 Difference]: Without dead ends: 1127 [2022-03-15 14:42:49,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:42:49,909 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 252 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:49,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2336 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-15 14:42:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-15 14:42:49,917 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) [2022-03-15 14:42:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2655 transitions. [2022-03-15 14:42:49,918 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2655 transitions. Word has length 79 [2022-03-15 14:42:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:49,919 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2655 transitions. [2022-03-15 14:42:49,919 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) [2022-03-15 14:42:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2655 transitions. [2022-03-15 14:42:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:49,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:49,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:49,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-15 14:42:49,920 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1378340728, now seen corresponding path program 106 times [2022-03-15 14:42:49,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:49,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776909482] [2022-03-15 14:42:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:50,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:50,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776909482] [2022-03-15 14:42:50,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776909482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:50,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:50,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:50,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184964202] [2022-03-15 14:42:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:50,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:50,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:50,227 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) [2022-03-15 14:42:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:51,090 INFO L93 Difference]: Finished difference Result 1301 states and 3239 transitions. [2022-03-15 14:42:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:42:51,090 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 [2022-03-15 14:42:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:51,092 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:42:51,092 INFO L226 Difference]: Without dead ends: 1171 [2022-03-15 14:42:51,092 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 [2022-03-15 14:42:51,092 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 272 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:51,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2399 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-15 14:42:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-03-15 14:42:51,101 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) [2022-03-15 14:42:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-15 14:42:51,102 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-15 14:42:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:51,102 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-15 14:42:51,102 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) [2022-03-15 14:42:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-15 14:42:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:51,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:51,104 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] [2022-03-15 14:42:51,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-15 14:42:51,104 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2063235402, now seen corresponding path program 107 times [2022-03-15 14:42:51,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:51,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828288123] [2022-03-15 14:42:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:51,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:51,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828288123] [2022-03-15 14:42:51,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828288123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:51,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:51,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:51,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434370294] [2022-03-15 14:42:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:51,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:51,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:51,424 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) [2022-03-15 14:42:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:52,389 INFO L93 Difference]: Finished difference Result 1292 states and 3208 transitions. [2022-03-15 14:42:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:42:52,390 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 [2022-03-15 14:42:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:52,391 INFO L225 Difference]: With dead ends: 1292 [2022-03-15 14:42:52,391 INFO L226 Difference]: Without dead ends: 1194 [2022-03-15 14:42:52,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:42:52,392 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 296 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:52,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2637 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-15 14:42:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-03-15 14:42:52,402 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) [2022-03-15 14:42:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:42:52,403 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:42:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:52,412 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:42:52,412 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) [2022-03-15 14:42:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:42:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:52,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:52,413 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] [2022-03-15 14:42:52,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-15 14:42:52,413 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1517494616, now seen corresponding path program 108 times [2022-03-15 14:42:52,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:52,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693587342] [2022-03-15 14:42:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:52,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:52,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693587342] [2022-03-15 14:42:52,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693587342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:52,716 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:52,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:42:52,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128323465] [2022-03-15 14:42:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:52,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:42:52,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:42:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:42:52,717 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) [2022-03-15 14:42:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:53,652 INFO L93 Difference]: Finished difference Result 1275 states and 3159 transitions. [2022-03-15 14:42:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:42:53,652 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 [2022-03-15 14:42:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:53,654 INFO L225 Difference]: With dead ends: 1275 [2022-03-15 14:42:53,654 INFO L226 Difference]: Without dead ends: 1162 [2022-03-15 14:42:53,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:42:53,654 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 323 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:53,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2440 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-15 14:42:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-03-15 14:42:53,665 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) [2022-03-15 14:42:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-03-15 14:42:53,668 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-03-15 14:42:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:53,668 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-03-15 14:42:53,668 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) [2022-03-15 14:42:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-03-15 14:42:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:53,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:53,669 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] [2022-03-15 14:42:53,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-15 14:42:53,670 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:53,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1192046390, now seen corresponding path program 109 times [2022-03-15 14:42:53,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:53,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595966535] [2022-03-15 14:42:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:53,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:53,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595966535] [2022-03-15 14:42:53,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595966535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:53,972 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:53,972 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:53,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006457262] [2022-03-15 14:42:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:53,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:53,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:53,973 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) [2022-03-15 14:42:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:54,773 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-15 14:42:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:42:54,774 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 [2022-03-15 14:42:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:54,775 INFO L225 Difference]: With dead ends: 1281 [2022-03-15 14:42:54,775 INFO L226 Difference]: Without dead ends: 1131 [2022-03-15 14:42:54,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:42:54,776 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 256 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:54,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2290 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-15 14:42:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1071. [2022-03-15 14:42:54,784 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) [2022-03-15 14:42:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2673 transitions. [2022-03-15 14:42:54,785 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2673 transitions. Word has length 79 [2022-03-15 14:42:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:54,786 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2673 transitions. [2022-03-15 14:42:54,786 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) [2022-03-15 14:42:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2673 transitions. [2022-03-15 14:42:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:54,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:54,787 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] [2022-03-15 14:42:54,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-15 14:42:54,787 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1898627354, now seen corresponding path program 110 times [2022-03-15 14:42:54,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:54,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984122177] [2022-03-15 14:42:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:55,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:55,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984122177] [2022-03-15 14:42:55,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984122177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:55,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:55,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:55,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861003343] [2022-03-15 14:42:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:55,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:55,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:55,089 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) [2022-03-15 14:42:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:55,880 INFO L93 Difference]: Finished difference Result 1305 states and 3234 transitions. [2022-03-15 14:42:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:42:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:42:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:55,882 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:42:55,882 INFO L226 Difference]: Without dead ends: 1103 [2022-03-15 14:42:55,882 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 [2022-03-15 14:42:55,883 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 271 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:55,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2452 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-15 14:42:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-15 14:42:55,899 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) [2022-03-15 14:42:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2611 transitions. [2022-03-15 14:42:55,901 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2611 transitions. Word has length 79 [2022-03-15 14:42:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:55,901 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2611 transitions. [2022-03-15 14:42:55,901 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) [2022-03-15 14:42:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2611 transitions. [2022-03-15 14:42:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:55,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:55,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:55,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-15 14:42:55,902 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -75464088, now seen corresponding path program 111 times [2022-03-15 14:42:55,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:55,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595775849] [2022-03-15 14:42:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:56,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:56,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595775849] [2022-03-15 14:42:56,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595775849] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:56,217 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:56,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:56,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490559163] [2022-03-15 14:42:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:56,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:56,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:56,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:56,218 INFO L87 Difference]: Start difference. First operand 1047 states and 2611 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) [2022-03-15 14:42:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:57,162 INFO L93 Difference]: Finished difference Result 1321 states and 3294 transitions. [2022-03-15 14:42:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:57,163 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 [2022-03-15 14:42:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:57,164 INFO L225 Difference]: With dead ends: 1321 [2022-03-15 14:42:57,164 INFO L226 Difference]: Without dead ends: 1191 [2022-03-15 14:42:57,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:42:57,165 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 291 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:57,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2309 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-15 14:42:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1083. [2022-03-15 14:42:57,174 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) [2022-03-15 14:42:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-15 14:42:57,175 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-15 14:42:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:57,175 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-15 14:42:57,175 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) [2022-03-15 14:42:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-15 14:42:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:57,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:57,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:57,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-15 14:42:57,177 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -928855254, now seen corresponding path program 112 times [2022-03-15 14:42:57,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:57,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251408640] [2022-03-15 14:42:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:57,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:57,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:57,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251408640] [2022-03-15 14:42:57,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251408640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:57,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:57,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:57,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495868487] [2022-03-15 14:42:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:57,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:57,487 INFO L87 Difference]: Start difference. First operand 1083 states and 2702 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) [2022-03-15 14:42:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:58,435 INFO L93 Difference]: Finished difference Result 1308 states and 3252 transitions. [2022-03-15 14:42:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:42:58,436 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 [2022-03-15 14:42:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:58,438 INFO L225 Difference]: With dead ends: 1308 [2022-03-15 14:42:58,438 INFO L226 Difference]: Without dead ends: 1210 [2022-03-15 14:42:58,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:42:58,439 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 300 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2500 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 [2022-03-15 14:42:58,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2500 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-03-15 14:42:58,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1087. [2022-03-15 14:42:58,448 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) [2022-03-15 14:42:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:42:58,449 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:42:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:58,450 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:42:58,450 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) [2022-03-15 14:42:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:42:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:58,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:58,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:58,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-15 14:42:58,451 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash -214617976, now seen corresponding path program 113 times [2022-03-15 14:42:58,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:58,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66682845] [2022-03-15 14:42:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:58,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:58,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66682845] [2022-03-15 14:42:58,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66682845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:58,751 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:42:58,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:42:58,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671238792] [2022-03-15 14:42:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:58,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:42:58,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:42:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:42:58,751 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) [2022-03-15 14:42:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:59,669 INFO L93 Difference]: Finished difference Result 1276 states and 3168 transitions. [2022-03-15 14:42:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:59,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:42:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:59,671 INFO L225 Difference]: With dead ends: 1276 [2022-03-15 14:42:59,671 INFO L226 Difference]: Without dead ends: 1163 [2022-03-15 14:42:59,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:42:59,671 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 311 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:59,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2310 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-03-15 14:42:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1075. [2022-03-15 14:42:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4953445065176907) internal successors, (2680), 1074 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) [2022-03-15 14:42:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2680 transitions. [2022-03-15 14:42:59,681 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2680 transitions. Word has length 79 [2022-03-15 14:42:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:59,681 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2680 transitions. [2022-03-15 14:42:59,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2680 transitions. [2022-03-15 14:42:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:42:59,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:59,683 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] [2022-03-15 14:42:59,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-15 14:42:59,683 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 344340616, now seen corresponding path program 114 times [2022-03-15 14:42:59,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:59,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125678976] [2022-03-15 14:42:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:00,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:00,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125678976] [2022-03-15 14:43:00,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125678976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:00,039 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:00,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:00,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760085887] [2022-03-15 14:43:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:00,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:00,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:00,039 INFO L87 Difference]: Start difference. First operand 1075 states and 2680 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) [2022-03-15 14:43:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:01,231 INFO L93 Difference]: Finished difference Result 1318 states and 3271 transitions. [2022-03-15 14:43:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:43:01,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:01,233 INFO L225 Difference]: With dead ends: 1318 [2022-03-15 14:43:01,233 INFO L226 Difference]: Without dead ends: 1220 [2022-03-15 14:43:01,233 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 [2022-03-15 14:43:01,233 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 293 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:01,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2312 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:43:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-15 14:43:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1099. [2022-03-15 14:43:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.493624772313297) internal successors, (2738), 1098 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) [2022-03-15 14:43:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2738 transitions. [2022-03-15 14:43:01,245 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2738 transitions. Word has length 79 [2022-03-15 14:43:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:01,245 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2738 transitions. [2022-03-15 14:43:01,245 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) [2022-03-15 14:43:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2738 transitions. [2022-03-15 14:43:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:01,246 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:01,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:01,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-15 14:43:01,247 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash -409489084, now seen corresponding path program 115 times [2022-03-15 14:43:01,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:01,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305535342] [2022-03-15 14:43:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:01,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:01,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305535342] [2022-03-15 14:43:01,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305535342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:01,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:01,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:01,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803920976] [2022-03-15 14:43:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:01,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:01,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:01,559 INFO L87 Difference]: Start difference. First operand 1099 states and 2738 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) [2022-03-15 14:43:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:02,461 INFO L93 Difference]: Finished difference Result 1301 states and 3218 transitions. [2022-03-15 14:43:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:43:02,461 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 [2022-03-15 14:43:02,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:02,462 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:43:02,463 INFO L226 Difference]: Without dead ends: 1150 [2022-03-15 14:43:02,463 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 [2022-03-15 14:43:02,463 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 291 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:02,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2408 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-03-15 14:43:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1059. [2022-03-15 14:43:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.491493383742911) internal successors, (2636), 1058 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2636 transitions. [2022-03-15 14:43:02,473 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2636 transitions. Word has length 79 [2022-03-15 14:43:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:02,473 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2636 transitions. [2022-03-15 14:43:02,473 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) [2022-03-15 14:43:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2636 transitions. [2022-03-15 14:43:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:02,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:02,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:02,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-15 14:43:02,475 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -703536056, now seen corresponding path program 116 times [2022-03-15 14:43:02,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:02,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012041510] [2022-03-15 14:43:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:02,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:02,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012041510] [2022-03-15 14:43:02,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012041510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:02,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:02,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:02,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790043787] [2022-03-15 14:43:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:02,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:02,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:02,784 INFO L87 Difference]: Start difference. First operand 1059 states and 2636 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) [2022-03-15 14:43:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:03,783 INFO L93 Difference]: Finished difference Result 1305 states and 3242 transitions. [2022-03-15 14:43:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:43:03,784 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 [2022-03-15 14:43:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:03,785 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:43:03,785 INFO L226 Difference]: Without dead ends: 1175 [2022-03-15 14:43:03,786 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 [2022-03-15 14:43:03,786 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 292 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:03,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2469 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-03-15 14:43:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1071. [2022-03-15 14:43:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.486915887850467) internal successors, (2661), 1070 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2661 transitions. [2022-03-15 14:43:03,797 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2661 transitions. Word has length 79 [2022-03-15 14:43:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:03,797 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2661 transitions. [2022-03-15 14:43:03,797 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) [2022-03-15 14:43:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2661 transitions. [2022-03-15 14:43:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:03,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:03,799 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] [2022-03-15 14:43:03,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-15 14:43:03,799 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1556927222, now seen corresponding path program 117 times [2022-03-15 14:43:03,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:03,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532465726] [2022-03-15 14:43:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:03,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:04,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:04,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532465726] [2022-03-15 14:43:04,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532465726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:04,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:04,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:04,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990163237] [2022-03-15 14:43:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:04,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:04,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:04,125 INFO L87 Difference]: Start difference. First operand 1071 states and 2661 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) [2022-03-15 14:43:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:05,106 INFO L93 Difference]: Finished difference Result 1288 states and 3189 transitions. [2022-03-15 14:43:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:43:05,106 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 [2022-03-15 14:43:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:05,107 INFO L225 Difference]: With dead ends: 1288 [2022-03-15 14:43:05,107 INFO L226 Difference]: Without dead ends: 1190 [2022-03-15 14:43:05,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:43:05,108 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 297 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:05,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2559 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-15 14:43:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1075. [2022-03-15 14:43:05,116 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) [2022-03-15 14:43:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:43:05,117 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:43:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:05,117 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:43:05,117 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) [2022-03-15 14:43:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:43:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:05,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:05,119 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] [2022-03-15 14:43:05,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-15 14:43:05,119 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash -842689944, now seen corresponding path program 118 times [2022-03-15 14:43:05,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:05,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443497125] [2022-03-15 14:43:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:05,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:05,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443497125] [2022-03-15 14:43:05,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443497125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:05,440 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:05,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:05,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744058622] [2022-03-15 14:43:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:05,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:05,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:05,440 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) [2022-03-15 14:43:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:06,398 INFO L93 Difference]: Finished difference Result 1271 states and 3140 transitions. [2022-03-15 14:43:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:43:06,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:06,400 INFO L225 Difference]: With dead ends: 1271 [2022-03-15 14:43:06,400 INFO L226 Difference]: Without dead ends: 1158 [2022-03-15 14:43:06,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:43:06,400 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 304 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:06,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2482 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-03-15 14:43:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1063. [2022-03-15 14:43:06,409 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) [2022-03-15 14:43:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-15 14:43:06,410 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-15 14:43:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:06,410 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-15 14:43:06,410 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) [2022-03-15 14:43:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-15 14:43:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:06,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:06,411 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] [2022-03-15 14:43:06,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-15 14:43:06,411 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash -517241718, now seen corresponding path program 119 times [2022-03-15 14:43:06,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:06,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735923080] [2022-03-15 14:43:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:06,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:06,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735923080] [2022-03-15 14:43:06,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735923080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:06,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:06,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:06,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092896497] [2022-03-15 14:43:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:06,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:06,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:06,724 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) [2022-03-15 14:43:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:07,675 INFO L93 Difference]: Finished difference Result 1289 states and 3190 transitions. [2022-03-15 14:43:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:43:07,675 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 [2022-03-15 14:43:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:07,677 INFO L225 Difference]: With dead ends: 1289 [2022-03-15 14:43:07,677 INFO L226 Difference]: Without dead ends: 1131 [2022-03-15 14:43:07,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:43:07,677 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 254 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:07,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2723 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-15 14:43:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-15 14:43:07,685 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) [2022-03-15 14:43:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2618 transitions. [2022-03-15 14:43:07,687 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2618 transitions. Word has length 79 [2022-03-15 14:43:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:07,687 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2618 transitions. [2022-03-15 14:43:07,687 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) [2022-03-15 14:43:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2618 transitions. [2022-03-15 14:43:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:07,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:07,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:07,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-15 14:43:07,688 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:07,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1300436666, now seen corresponding path program 120 times [2022-03-15 14:43:07,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:07,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646817872] [2022-03-15 14:43:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:07,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:07,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646817872] [2022-03-15 14:43:07,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646817872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:07,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:07,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:07,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718489019] [2022-03-15 14:43:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:07,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:07,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:07,981 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) [2022-03-15 14:43:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:08,854 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-15 14:43:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:43:08,854 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 [2022-03-15 14:43:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:08,856 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:43:08,856 INFO L226 Difference]: Without dead ends: 1155 [2022-03-15 14:43:08,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:43:08,856 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 291 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:08,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2313 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-15 14:43:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-15 14:43:08,865 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) [2022-03-15 14:43:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-15 14:43:08,866 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-15 14:43:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:08,866 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-15 14:43:08,866 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) [2022-03-15 14:43:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-15 14:43:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:08,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:08,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:08,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-15 14:43:08,868 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2141139464, now seen corresponding path program 121 times [2022-03-15 14:43:08,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:08,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330097288] [2022-03-15 14:43:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:08,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:09,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:09,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330097288] [2022-03-15 14:43:09,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330097288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:09,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:09,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:09,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786587443] [2022-03-15 14:43:09,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:09,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:09,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:09,204 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) [2022-03-15 14:43:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:10,083 INFO L93 Difference]: Finished difference Result 1272 states and 3149 transitions. [2022-03-15 14:43:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:10,084 INFO L225 Difference]: With dead ends: 1272 [2022-03-15 14:43:10,085 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 14:43:10,085 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 [2022-03-15 14:43:10,085 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 272 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:10,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2221 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 14:43:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1087. [2022-03-15 14:43:10,094 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) [2022-03-15 14:43:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-15 14:43:10,096 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-15 14:43:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:10,096 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-15 14:43:10,096 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) [2022-03-15 14:43:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-15 14:43:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:10,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:10,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:10,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-15 14:43:10,097 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1439590554, now seen corresponding path program 122 times [2022-03-15 14:43:10,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:10,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921208651] [2022-03-15 14:43:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:10,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:10,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921208651] [2022-03-15 14:43:10,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921208651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:10,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:10,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:10,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257502830] [2022-03-15 14:43:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:10,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:10,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:10,403 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) [2022-03-15 14:43:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:11,261 INFO L93 Difference]: Finished difference Result 1240 states and 3065 transitions. [2022-03-15 14:43:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:43:11,261 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:11,262 INFO L225 Difference]: With dead ends: 1240 [2022-03-15 14:43:11,263 INFO L226 Difference]: Without dead ends: 1127 [2022-03-15 14:43:11,263 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 [2022-03-15 14:43:11,263 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 [2022-03-15 14:43:11,263 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] [2022-03-15 14:43:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-15 14:43:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-15 14:43:11,272 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) [2022-03-15 14:43:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:43:11,273 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:43:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:11,273 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:43:11,273 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) [2022-03-15 14:43:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:43:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:11,274 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:11,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:11,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-15 14:43:11,275 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -880631962, now seen corresponding path program 123 times [2022-03-15 14:43:11,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:11,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22896627] [2022-03-15 14:43:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:11,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:11,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22896627] [2022-03-15 14:43:11,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22896627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:11,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:11,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:11,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619655326] [2022-03-15 14:43:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:11,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:11,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:11,569 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) [2022-03-15 14:43:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:12,633 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-03-15 14:43:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:12,633 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 [2022-03-15 14:43:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:12,635 INFO L225 Difference]: With dead ends: 1290 [2022-03-15 14:43:12,635 INFO L226 Difference]: Without dead ends: 1192 [2022-03-15 14:43:12,635 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 [2022-03-15 14:43:12,635 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 254 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:12,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2602 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-15 14:43:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1099. [2022-03-15 14:43:12,644 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) [2022-03-15 14:43:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:43:12,646 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:43:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:12,646 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:43:12,646 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) [2022-03-15 14:43:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:43:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:12,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:12,647 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] [2022-03-15 14:43:12,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-15 14:43:12,647 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1634461662, now seen corresponding path program 124 times [2022-03-15 14:43:12,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:12,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248830623] [2022-03-15 14:43:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:12,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:12,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248830623] [2022-03-15 14:43:12,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248830623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:12,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:12,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:12,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154341502] [2022-03-15 14:43:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:12,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:12,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:12,960 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) [2022-03-15 14:43:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:13,846 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-03-15 14:43:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:43:13,846 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 [2022-03-15 14:43:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:13,847 INFO L225 Difference]: With dead ends: 1258 [2022-03-15 14:43:13,848 INFO L226 Difference]: Without dead ends: 1107 [2022-03-15 14:43:13,848 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 [2022-03-15 14:43:13,848 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 253 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:13,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 2452 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-15 14:43:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1059. [2022-03-15 14:43:13,856 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) [2022-03-15 14:43:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:43:13,857 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:43:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:13,858 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:43:13,858 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) [2022-03-15 14:43:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:43:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:13,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:13,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:13,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-15 14:43:13,859 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1289992038, now seen corresponding path program 125 times [2022-03-15 14:43:13,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:13,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686954730] [2022-03-15 14:43:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:14,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:14,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686954730] [2022-03-15 14:43:14,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686954730] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:14,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:14,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:14,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926286458] [2022-03-15 14:43:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:14,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:14,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:14,163 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) [2022-03-15 14:43:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:15,236 INFO L93 Difference]: Finished difference Result 1309 states and 3232 transitions. [2022-03-15 14:43:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:43:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:15,237 INFO L225 Difference]: With dead ends: 1309 [2022-03-15 14:43:15,237 INFO L226 Difference]: Without dead ends: 1211 [2022-03-15 14:43:15,238 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 [2022-03-15 14:43:15,238 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 289 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:15,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2635 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-15 14:43:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1087. [2022-03-15 14:43:15,247 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) [2022-03-15 14:43:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:43:15,248 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:43:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:15,248 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:43:15,248 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) [2022-03-15 14:43:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:43:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:15,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:15,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:15,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-03-15 14:43:15,249 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash 536162338, now seen corresponding path program 126 times [2022-03-15 14:43:15,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:15,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662148593] [2022-03-15 14:43:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:15,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:15,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:15,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662148593] [2022-03-15 14:43:15,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662148593] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:15,572 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:15,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:15,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574072965] [2022-03-15 14:43:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:15,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:15,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:15,579 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) [2022-03-15 14:43:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:16,583 INFO L93 Difference]: Finished difference Result 1265 states and 3115 transitions. [2022-03-15 14:43:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:43:16,584 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 [2022-03-15 14:43:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:16,585 INFO L225 Difference]: With dead ends: 1265 [2022-03-15 14:43:16,585 INFO L226 Difference]: Without dead ends: 1130 [2022-03-15 14:43:16,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:43:16,586 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 270 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:16,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2600 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-03-15 14:43:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1063. [2022-03-15 14:43:16,594 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) [2022-03-15 14:43:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:43:16,596 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:43:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:16,596 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:43:16,596 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) [2022-03-15 14:43:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:43:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:16,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:16,597 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] [2022-03-15 14:43:16,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-15 14:43:16,597 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1476009900, now seen corresponding path program 127 times [2022-03-15 14:43:16,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:16,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847704463] [2022-03-15 14:43:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:16,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:16,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:16,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847704463] [2022-03-15 14:43:16,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847704463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:16,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:16,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:16,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260269526] [2022-03-15 14:43:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:16,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:16,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:16,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:16,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:16,889 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) [2022-03-15 14:43:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:17,713 INFO L93 Difference]: Finished difference Result 1253 states and 3082 transitions. [2022-03-15 14:43:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:43:17,713 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 [2022-03-15 14:43:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:17,714 INFO L225 Difference]: With dead ends: 1253 [2022-03-15 14:43:17,714 INFO L226 Difference]: Without dead ends: 1071 [2022-03-15 14:43:17,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:43:17,715 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 263 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:17,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2583 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-15 14:43:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1039. [2022-03-15 14:43:17,722 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) [2022-03-15 14:43:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2589 transitions. [2022-03-15 14:43:17,724 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2589 transitions. Word has length 79 [2022-03-15 14:43:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:17,724 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2589 transitions. [2022-03-15 14:43:17,724 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) [2022-03-15 14:43:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2589 transitions. [2022-03-15 14:43:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:17,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:17,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:17,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-15 14:43:17,725 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2103729414, now seen corresponding path program 128 times [2022-03-15 14:43:17,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:17,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293197486] [2022-03-15 14:43:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:18,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:18,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293197486] [2022-03-15 14:43:18,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293197486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:18,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:18,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:18,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029478398] [2022-03-15 14:43:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:18,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:18,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:18,017 INFO L87 Difference]: Start difference. First operand 1039 states and 2589 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) [2022-03-15 14:43:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:19,039 INFO L93 Difference]: Finished difference Result 1321 states and 3294 transitions. [2022-03-15 14:43:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:19,040 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 [2022-03-15 14:43:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:19,041 INFO L225 Difference]: With dead ends: 1321 [2022-03-15 14:43:19,041 INFO L226 Difference]: Without dead ends: 1191 [2022-03-15 14:43:19,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:43:19,042 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 264 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:19,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2456 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-03-15 14:43:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1095. [2022-03-15 14:43:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.5) internal successors, (2735), 1094 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) [2022-03-15 14:43:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2735 transitions. [2022-03-15 14:43:19,053 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2735 transitions. Word has length 79 [2022-03-15 14:43:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:19,053 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2735 transitions. [2022-03-15 14:43:19,053 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) [2022-03-15 14:43:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2735 transitions. [2022-03-15 14:43:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:19,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:19,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:19,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-15 14:43:19,055 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1250338248, now seen corresponding path program 129 times [2022-03-15 14:43:19,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:19,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959219231] [2022-03-15 14:43:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:19,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:19,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959219231] [2022-03-15 14:43:19,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959219231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:19,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:19,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:19,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325752092] [2022-03-15 14:43:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:19,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:19,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:19,368 INFO L87 Difference]: Start difference. First operand 1095 states and 2735 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) [2022-03-15 14:43:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:20,595 INFO L93 Difference]: Finished difference Result 1316 states and 3274 transitions. [2022-03-15 14:43:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:43:20,595 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 [2022-03-15 14:43:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:20,597 INFO L225 Difference]: With dead ends: 1316 [2022-03-15 14:43:20,597 INFO L226 Difference]: Without dead ends: 1218 [2022-03-15 14:43:20,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:43:20,598 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 307 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:20,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2553 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:43:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-03-15 14:43:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1099. [2022-03-15 14:43:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4972677595628414) internal successors, (2742), 1098 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) [2022-03-15 14:43:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2742 transitions. [2022-03-15 14:43:20,609 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2742 transitions. Word has length 79 [2022-03-15 14:43:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:20,609 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2742 transitions. [2022-03-15 14:43:20,609 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) [2022-03-15 14:43:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2742 transitions. [2022-03-15 14:43:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:20,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:20,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:20,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-15 14:43:20,610 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1964575526, now seen corresponding path program 130 times [2022-03-15 14:43:20,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:20,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578630865] [2022-03-15 14:43:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:20,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:20,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578630865] [2022-03-15 14:43:20,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578630865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:20,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:20,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:20,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816488625] [2022-03-15 14:43:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:20,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:20,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:20,923 INFO L87 Difference]: Start difference. First operand 1099 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) [2022-03-15 14:43:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:21,956 INFO L93 Difference]: Finished difference Result 1284 states and 3190 transitions. [2022-03-15 14:43:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:43:21,956 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 [2022-03-15 14:43:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:21,958 INFO L225 Difference]: With dead ends: 1284 [2022-03-15 14:43:21,958 INFO L226 Difference]: Without dead ends: 1171 [2022-03-15 14:43:21,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:43:21,958 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 317 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:21,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2361 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-15 14:43:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1087. [2022-03-15 14:43:21,967 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) [2022-03-15 14:43:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-03-15 14:43:21,969 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-03-15 14:43:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:21,969 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-03-15 14:43:21,969 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) [2022-03-15 14:43:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-03-15 14:43:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:21,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:21,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:21,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-03-15 14:43:21,970 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1771433178, now seen corresponding path program 131 times [2022-03-15 14:43:21,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:21,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913552485] [2022-03-15 14:43:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:22,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:22,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913552485] [2022-03-15 14:43:22,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913552485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:22,264 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:22,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:22,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121551036] [2022-03-15 14:43:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:22,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:22,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:22,265 INFO L87 Difference]: Start difference. First operand 1087 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) [2022-03-15 14:43:24,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:43:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:24,679 INFO L93 Difference]: Finished difference Result 1326 states and 3293 transitions. [2022-03-15 14:43:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:43:24,679 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 [2022-03-15 14:43:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:24,681 INFO L225 Difference]: With dead ends: 1326 [2022-03-15 14:43:24,681 INFO L226 Difference]: Without dead ends: 1228 [2022-03-15 14:43:24,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:43:24,681 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 300 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:24,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2483 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:43:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-03-15 14:43:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1111. [2022-03-15 14:43:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4963963963963964) internal successors, (2771), 1110 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) [2022-03-15 14:43:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2771 transitions. [2022-03-15 14:43:24,691 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2771 transitions. Word has length 79 [2022-03-15 14:43:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:24,691 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2771 transitions. [2022-03-15 14:43:24,692 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) [2022-03-15 14:43:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2771 transitions. [2022-03-15 14:43:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:24,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:24,693 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] [2022-03-15 14:43:24,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-15 14:43:24,693 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1769704418, now seen corresponding path program 132 times [2022-03-15 14:43:24,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:24,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642762769] [2022-03-15 14:43:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:24,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:24,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:24,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642762769] [2022-03-15 14:43:24,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642762769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:24,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:24,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:24,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345791431] [2022-03-15 14:43:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:24,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:24,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:24,988 INFO L87 Difference]: Start difference. First operand 1111 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) [2022-03-15 14:43:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:25,960 INFO L93 Difference]: Finished difference Result 1309 states and 3240 transitions. [2022-03-15 14:43:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:43:25,961 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 [2022-03-15 14:43:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:25,962 INFO L225 Difference]: With dead ends: 1309 [2022-03-15 14:43:25,962 INFO L226 Difference]: Without dead ends: 1158 [2022-03-15 14:43:25,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:43:25,963 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 276 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2332 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 [2022-03-15 14:43:25,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2332 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-03-15 14:43:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1071. [2022-03-15 14:43:25,972 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) [2022-03-15 14:43:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-15 14:43:25,973 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-15 14:43:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:25,973 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-15 14:43:25,973 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) [2022-03-15 14:43:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-15 14:43:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:25,974 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:25,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:25,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-15 14:43:25,974 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1475657446, now seen corresponding path program 133 times [2022-03-15 14:43:25,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:25,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538156274] [2022-03-15 14:43:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:25,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:26,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:26,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538156274] [2022-03-15 14:43:26,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538156274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:26,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:26,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:26,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953761231] [2022-03-15 14:43:26,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:26,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:26,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:26,325 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) [2022-03-15 14:43:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:27,321 INFO L93 Difference]: Finished difference Result 1301 states and 3227 transitions. [2022-03-15 14:43:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:43:27,322 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 [2022-03-15 14:43:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:27,323 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:43:27,323 INFO L226 Difference]: Without dead ends: 1171 [2022-03-15 14:43:27,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:43:27,324 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:27,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2620 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-15 14:43:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-03-15 14:43:27,333 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) [2022-03-15 14:43:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-03-15 14:43:27,334 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-03-15 14:43:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:27,334 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-03-15 14:43:27,335 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) [2022-03-15 14:43:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-03-15 14:43:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:27,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:27,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:27,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-15 14:43:27,336 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash 622266280, now seen corresponding path program 134 times [2022-03-15 14:43:27,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:27,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705411287] [2022-03-15 14:43:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:27,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:27,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705411287] [2022-03-15 14:43:27,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705411287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:27,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:27,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:27,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93689300] [2022-03-15 14:43:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:27,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:27,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:27,644 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:28,631 INFO L93 Difference]: Finished difference Result 1292 states and 3196 transitions. [2022-03-15 14:43:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:43:28,631 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 [2022-03-15 14:43:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:28,633 INFO L225 Difference]: With dead ends: 1292 [2022-03-15 14:43:28,633 INFO L226 Difference]: Without dead ends: 1194 [2022-03-15 14:43:28,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:43:28,633 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 306 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:28,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2477 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-15 14:43:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-03-15 14:43:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1086 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2697 transitions. [2022-03-15 14:43:28,644 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2697 transitions. Word has length 79 [2022-03-15 14:43:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:28,644 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2697 transitions. [2022-03-15 14:43:28,644 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) [2022-03-15 14:43:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2697 transitions. [2022-03-15 14:43:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:28,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:28,645 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] [2022-03-15 14:43:28,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-15 14:43:28,645 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1336503558, now seen corresponding path program 135 times [2022-03-15 14:43:28,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:28,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261175767] [2022-03-15 14:43:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:28,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:28,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261175767] [2022-03-15 14:43:28,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261175767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:28,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:28,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:28,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131372648] [2022-03-15 14:43:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:28,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:28,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:28,978 INFO L87 Difference]: Start difference. First operand 1087 states and 2697 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) [2022-03-15 14:43:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:29,967 INFO L93 Difference]: Finished difference Result 1275 states and 3147 transitions. [2022-03-15 14:43:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:43:29,967 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 [2022-03-15 14:43:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:29,969 INFO L225 Difference]: With dead ends: 1275 [2022-03-15 14:43:29,969 INFO L226 Difference]: Without dead ends: 1162 [2022-03-15 14:43:29,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:43:29,969 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 331 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:29,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2407 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-15 14:43:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-03-15 14:43:29,978 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) [2022-03-15 14:43:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-15 14:43:29,989 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-15 14:43:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:29,989 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-15 14:43:29,989 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) [2022-03-15 14:43:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-15 14:43:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:29,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:29,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-03-15 14:43:29,991 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1661951784, now seen corresponding path program 136 times [2022-03-15 14:43:29,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:29,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954943428] [2022-03-15 14:43:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:29,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:30,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:30,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954943428] [2022-03-15 14:43:30,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954943428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:30,327 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:30,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:30,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539466290] [2022-03-15 14:43:30,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:30,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:30,328 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) [2022-03-15 14:43:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:31,249 INFO L93 Difference]: Finished difference Result 1273 states and 3146 transitions. [2022-03-15 14:43:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:43:31,250 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 [2022-03-15 14:43:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:31,251 INFO L225 Difference]: With dead ends: 1273 [2022-03-15 14:43:31,251 INFO L226 Difference]: Without dead ends: 1115 [2022-03-15 14:43:31,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1795, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:43:31,252 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 250 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:31,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2741 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-15 14:43:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-15 14:43:31,260 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) [2022-03-15 14:43:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-03-15 14:43:31,261 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-03-15 14:43:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:31,261 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-03-15 14:43:31,261 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) [2022-03-15 14:43:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-03-15 14:43:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:31,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:31,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:31,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-15 14:43:31,263 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:31,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1817268008, now seen corresponding path program 137 times [2022-03-15 14:43:31,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:31,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023597824] [2022-03-15 14:43:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:31,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:31,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023597824] [2022-03-15 14:43:31,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023597824] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:31,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:31,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:31,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670165396] [2022-03-15 14:43:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:31,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:31,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:31,561 INFO L87 Difference]: Start difference. First operand 1063 states and 2647 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:32,415 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-03-15 14:43:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:43:32,415 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 [2022-03-15 14:43:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:32,417 INFO L225 Difference]: With dead ends: 1269 [2022-03-15 14:43:32,417 INFO L226 Difference]: Without dead ends: 1155 [2022-03-15 14:43:32,417 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 [2022-03-15 14:43:32,418 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 283 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:32,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2279 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-15 14:43:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1087. [2022-03-15 14:43:32,427 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) [2022-03-15 14:43:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:43:32,429 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:43:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:32,429 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:43:32,429 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) [2022-03-15 14:43:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:43:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:32,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:32,430 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] [2022-03-15 14:43:32,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-15 14:43:32,430 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1450373578, now seen corresponding path program 138 times [2022-03-15 14:43:32,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:32,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919691019] [2022-03-15 14:43:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:32,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:32,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919691019] [2022-03-15 14:43:32,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919691019] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:32,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:32,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:32,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357474211] [2022-03-15 14:43:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:32,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:32,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:32,733 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) [2022-03-15 14:43:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:33,668 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-03-15 14:43:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:33,668 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 [2022-03-15 14:43:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:33,669 INFO L225 Difference]: With dead ends: 1280 [2022-03-15 14:43:33,670 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:43:33,670 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 [2022-03-15 14:43:33,670 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 249 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:33,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 2576 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:43:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1091. [2022-03-15 14:43:33,679 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) [2022-03-15 14:43:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-03-15 14:43:33,680 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-03-15 14:43:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:33,680 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-03-15 14:43:33,680 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) [2022-03-15 14:43:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-03-15 14:43:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:33,681 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:33,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:33,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-15 14:43:33,682 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2130356440, now seen corresponding path program 139 times [2022-03-15 14:43:33,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:33,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376564866] [2022-03-15 14:43:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:33,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:33,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376564866] [2022-03-15 14:43:33,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376564866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:33,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:33,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:33,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698445848] [2022-03-15 14:43:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:33,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:33,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:33,981 INFO L87 Difference]: Start difference. First operand 1091 states and 2716 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:34,870 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-03-15 14:43:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:43:34,870 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 [2022-03-15 14:43:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:34,871 INFO L225 Difference]: With dead ends: 1248 [2022-03-15 14:43:34,872 INFO L226 Difference]: Without dead ends: 1139 [2022-03-15 14:43:34,872 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 [2022-03-15 14:43:34,872 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 283 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:34,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2289 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-15 14:43:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-03-15 14:43:34,881 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) [2022-03-15 14:43:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-15 14:43:34,882 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-15 14:43:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:34,882 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-15 14:43:34,882 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) [2022-03-15 14:43:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-15 14:43:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:34,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:34,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:34,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-03-15 14:43:34,884 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1659665626, now seen corresponding path program 140 times [2022-03-15 14:43:34,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:34,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67748244] [2022-03-15 14:43:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:35,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:35,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67748244] [2022-03-15 14:43:35,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67748244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:35,186 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:35,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:35,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841436942] [2022-03-15 14:43:35,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:35,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:35,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:35,187 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) [2022-03-15 14:43:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:36,217 INFO L93 Difference]: Finished difference Result 1302 states and 3223 transitions. [2022-03-15 14:43:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:36,218 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 [2022-03-15 14:43:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:36,219 INFO L225 Difference]: With dead ends: 1302 [2022-03-15 14:43:36,220 INFO L226 Difference]: Without dead ends: 1204 [2022-03-15 14:43:36,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:43:36,220 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 299 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:36,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2298 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-03-15 14:43:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1107. [2022-03-15 14:43:36,229 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) [2022-03-15 14:43:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-15 14:43:36,231 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-15 14:43:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:36,231 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-15 14:43:36,231 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) [2022-03-15 14:43:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-15 14:43:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:36,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:36,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:36,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-15 14:43:36,232 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:36,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1881471970, now seen corresponding path program 141 times [2022-03-15 14:43:36,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:36,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377646883] [2022-03-15 14:43:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:36,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:36,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377646883] [2022-03-15 14:43:36,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377646883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:36,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:36,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:36,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472625374] [2022-03-15 14:43:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:36,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:36,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:36,533 INFO L87 Difference]: Start difference. First operand 1107 states and 2756 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:37,484 INFO L93 Difference]: Finished difference Result 1270 states and 3135 transitions. [2022-03-15 14:43:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:43:37,485 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 [2022-03-15 14:43:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:37,486 INFO L225 Difference]: With dead ends: 1270 [2022-03-15 14:43:37,486 INFO L226 Difference]: Without dead ends: 1127 [2022-03-15 14:43:37,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:43:37,486 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 252 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:37,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2612 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-15 14:43:37,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-03-15 14:43:37,495 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) [2022-03-15 14:43:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:43:37,497 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:43:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:37,497 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:43:37,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:43:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:37,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:37,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:37,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-15 14:43:37,498 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash -825781756, now seen corresponding path program 142 times [2022-03-15 14:43:37,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:37,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265552992] [2022-03-15 14:43:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:37,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:37,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:37,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265552992] [2022-03-15 14:43:37,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265552992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:37,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:37,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:37,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538123108] [2022-03-15 14:43:37,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:37,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:37,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:37,803 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) [2022-03-15 14:43:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:39,333 INFO L93 Difference]: Finished difference Result 1345 states and 3331 transitions. [2022-03-15 14:43:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:43:39,333 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 [2022-03-15 14:43:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:39,335 INFO L225 Difference]: With dead ends: 1345 [2022-03-15 14:43:39,335 INFO L226 Difference]: Without dead ends: 1247 [2022-03-15 14:43:39,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 14:43:39,343 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 332 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:39,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2563 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:43:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-15 14:43:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1103. [2022-03-15 14:43:39,352 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) [2022-03-15 14:43:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-15 14:43:39,353 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-15 14:43:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:39,354 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-15 14:43:39,354 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) [2022-03-15 14:43:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-15 14:43:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:39,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:39,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:39,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-15 14:43:39,355 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1579611456, now seen corresponding path program 143 times [2022-03-15 14:43:39,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:39,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857423476] [2022-03-15 14:43:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:39,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:39,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857423476] [2022-03-15 14:43:39,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857423476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:39,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:39,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:39,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214165866] [2022-03-15 14:43:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:39,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:39,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:39,684 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) [2022-03-15 14:43:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:40,778 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-03-15 14:43:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:43:40,779 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 [2022-03-15 14:43:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:40,780 INFO L225 Difference]: With dead ends: 1301 [2022-03-15 14:43:40,780 INFO L226 Difference]: Without dead ends: 1166 [2022-03-15 14:43:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:43:40,781 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 311 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2551 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-15 14:43:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1079. [2022-03-15 14:43:40,790 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) [2022-03-15 14:43:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-15 14:43:40,792 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-15 14:43:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:40,792 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-15 14:43:40,792 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) [2022-03-15 14:43:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-15 14:43:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:40,793 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:40,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:40,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-15 14:43:40,793 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -639763894, now seen corresponding path program 144 times [2022-03-15 14:43:40,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:40,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008663084] [2022-03-15 14:43:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:41,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:41,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008663084] [2022-03-15 14:43:41,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008663084] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:41,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:41,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:41,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210950951] [2022-03-15 14:43:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:41,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:41,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:41,114 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) [2022-03-15 14:43:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:42,031 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-15 14:43:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:43:42,031 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 [2022-03-15 14:43:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:42,033 INFO L225 Difference]: With dead ends: 1289 [2022-03-15 14:43:42,033 INFO L226 Difference]: Without dead ends: 1115 [2022-03-15 14:43:42,033 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 [2022-03-15 14:43:42,034 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 319 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:42,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2334 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-15 14:43:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-03-15 14:43:42,042 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) [2022-03-15 14:43:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-15 14:43:42,044 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-15 14:43:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:42,044 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-15 14:43:42,044 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) [2022-03-15 14:43:42,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-15 14:43:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:42,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:42,045 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] [2022-03-15 14:43:42,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-15 14:43:42,045 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash -198073876, now seen corresponding path program 145 times [2022-03-15 14:43:42,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:42,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090998991] [2022-03-15 14:43:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:42,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:42,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:42,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090998991] [2022-03-15 14:43:42,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090998991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:42,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:42,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:42,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881759296] [2022-03-15 14:43:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:42,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:42,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:42,367 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) [2022-03-15 14:43:45,626 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 [] [2022-03-15 14:43:47,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:43:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:47,805 INFO L93 Difference]: Finished difference Result 1406 states and 3442 transitions. [2022-03-15 14:43:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:43:47,806 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 [2022-03-15 14:43:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:47,807 INFO L225 Difference]: With dead ends: 1406 [2022-03-15 14:43:47,807 INFO L226 Difference]: Without dead ends: 1308 [2022-03-15 14:43:47,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:43:47,808 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 325 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:47,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2668 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 993 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-15 14:43:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-03-15 14:43:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1087. [2022-03-15 14:43:47,817 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) [2022-03-15 14:43:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-15 14:43:47,818 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-15 14:43:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:47,818 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-15 14:43:47,818 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) [2022-03-15 14:43:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-15 14:43:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:47,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:47,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:47,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-03-15 14:43:47,820 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash 516163402, now seen corresponding path program 146 times [2022-03-15 14:43:47,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:47,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509488423] [2022-03-15 14:43:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:48,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:48,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509488423] [2022-03-15 14:43:48,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509488423] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:48,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:48,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:43:48,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409718529] [2022-03-15 14:43:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:48,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:43:48,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:43:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:43:48,115 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) [2022-03-15 14:43:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:49,361 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-03-15 14:43:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:43:49,362 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 [2022-03-15 14:43:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:49,363 INFO L225 Difference]: With dead ends: 1311 [2022-03-15 14:43:49,363 INFO L226 Difference]: Without dead ends: 1160 [2022-03-15 14:43:49,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:43:49,364 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 318 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:49,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2367 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:43:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-15 14:43:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1087. [2022-03-15 14:43:49,380 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) [2022-03-15 14:43:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:43:49,382 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:43:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:49,382 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:43:49,382 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) [2022-03-15 14:43:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:43:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:49,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:49,383 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] [2022-03-15 14:43:49,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-15 14:43:49,383 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1975058156, now seen corresponding path program 147 times [2022-03-15 14:43:49,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:49,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305122215] [2022-03-15 14:43:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:49,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:49,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305122215] [2022-03-15 14:43:49,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305122215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:49,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:49,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-15 14:43:49,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719845872] [2022-03-15 14:43:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:49,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:43:49,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:43:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:43:49,680 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) [2022-03-15 14:43:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:50,478 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-15 14:43:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:43:50,479 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 [2022-03-15 14:43:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:50,480 INFO L225 Difference]: With dead ends: 1271 [2022-03-15 14:43:50,480 INFO L226 Difference]: Without dead ends: 1051 [2022-03-15 14:43:50,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:43:50,480 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 248 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:50,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2253 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-03-15 14:43:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1023. [2022-03-15 14:43:50,489 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) [2022-03-15 14:43:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2545 transitions. [2022-03-15 14:43:50,490 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2545 transitions. Word has length 79 [2022-03-15 14:43:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:50,490 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2545 transitions. [2022-03-15 14:43:50,490 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) [2022-03-15 14:43:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2545 transitions. [2022-03-15 14:43:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:50,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:50,491 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] [2022-03-15 14:43:50,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-15 14:43:50,491 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 699727110, now seen corresponding path program 148 times [2022-03-15 14:43:50,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:50,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45430043] [2022-03-15 14:43:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:50,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:50,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45430043] [2022-03-15 14:43:50,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45430043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:50,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:50,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:50,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270505297] [2022-03-15 14:43:50,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:50,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:50,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:50,830 INFO L87 Difference]: Start difference. First operand 1023 states and 2545 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) [2022-03-15 14:43:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:52,405 INFO L93 Difference]: Finished difference Result 1345 states and 3360 transitions. [2022-03-15 14:43:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:43:52,405 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 [2022-03-15 14:43:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:52,407 INFO L225 Difference]: With dead ends: 1345 [2022-03-15 14:43:52,407 INFO L226 Difference]: Without dead ends: 1215 [2022-03-15 14:43:52,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:43:52,407 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 346 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:52,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2554 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:43:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-15 14:43:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1083. [2022-03-15 14:43:52,417 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) [2022-03-15 14:43:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-15 14:43:52,418 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-15 14:43:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:52,418 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-15 14:43:52,418 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) [2022-03-15 14:43:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-15 14:43:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:52,419 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:52,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:52,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-03-15 14:43:52,420 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash -153664056, now seen corresponding path program 149 times [2022-03-15 14:43:52,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:52,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115144343] [2022-03-15 14:43:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:52,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:52,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115144343] [2022-03-15 14:43:52,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115144343] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:52,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:52,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:52,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524708642] [2022-03-15 14:43:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:52,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:52,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:52,732 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) [2022-03-15 14:43:55,545 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 [] [2022-03-15 14:43:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:56,436 INFO L93 Difference]: Finished difference Result 1376 states and 3431 transitions. [2022-03-15 14:43:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:43:56,436 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 [2022-03-15 14:43:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:56,438 INFO L225 Difference]: With dead ends: 1376 [2022-03-15 14:43:56,438 INFO L226 Difference]: Without dead ends: 1278 [2022-03-15 14:43:56,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=2701, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:43:56,439 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 310 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:56,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2752 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1126 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-15 14:43:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-15 14:43:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1111. [2022-03-15 14:43:56,451 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) [2022-03-15 14:43:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-03-15 14:43:56,453 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-03-15 14:43:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:56,453 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-03-15 14:43:56,453 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) [2022-03-15 14:43:56,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-03-15 14:43:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:56,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:56,455 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] [2022-03-15 14:43:56,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-15 14:43:56,455 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:56,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 560573222, now seen corresponding path program 150 times [2022-03-15 14:43:56,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:56,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945834104] [2022-03-15 14:43:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:56,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:56,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945834104] [2022-03-15 14:43:56,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945834104] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:56,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:56,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:56,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220041299] [2022-03-15 14:43:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:56,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:56,773 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) [2022-03-15 14:43:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:58,267 INFO L93 Difference]: Finished difference Result 1359 states and 3382 transitions. [2022-03-15 14:43:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:43:58,268 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:43:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:58,269 INFO L225 Difference]: With dead ends: 1359 [2022-03-15 14:43:58,269 INFO L226 Difference]: Without dead ends: 1246 [2022-03-15 14:43:58,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:43:58,270 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 332 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:58,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2709 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:43:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-03-15 14:43:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1103. [2022-03-15 14:43:58,278 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) [2022-03-15 14:43:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-15 14:43:58,280 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-15 14:43:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:58,280 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-15 14:43:58,280 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) [2022-03-15 14:43:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-15 14:43:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:43:58,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:58,281 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] [2022-03-15 14:43:58,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-15 14:43:58,281 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1119531814, now seen corresponding path program 151 times [2022-03-15 14:43:58,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:58,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331974946] [2022-03-15 14:43:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:58,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:58,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331974946] [2022-03-15 14:43:58,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331974946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:43:58,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:43:58,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:43:58,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700960693] [2022-03-15 14:43:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:43:58,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:43:58,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:43:58,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:43:58,592 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) [2022-03-15 14:44:01,416 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 [] [2022-03-15 14:44:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:01,965 INFO L93 Difference]: Finished difference Result 1390 states and 3457 transitions. [2022-03-15 14:44:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:44:01,965 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 [2022-03-15 14:44:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:01,967 INFO L225 Difference]: With dead ends: 1390 [2022-03-15 14:44:01,967 INFO L226 Difference]: Without dead ends: 1292 [2022-03-15 14:44:01,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:44:01,968 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 329 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:01,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2698 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1100 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:44:01,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-03-15 14:44:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1127. [2022-03-15 14:44:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4893428063943164) internal successors, (2803), 1126 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2803 transitions. [2022-03-15 14:44:01,979 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2803 transitions. Word has length 79 [2022-03-15 14:44:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:01,979 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2803 transitions. [2022-03-15 14:44:01,980 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) [2022-03-15 14:44:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2803 transitions. [2022-03-15 14:44:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:01,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:01,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:01,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-15 14:44:01,987 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 365702114, now seen corresponding path program 152 times [2022-03-15 14:44:01,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:01,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530946467] [2022-03-15 14:44:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:02,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:02,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530946467] [2022-03-15 14:44:02,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530946467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:02,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:02,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:02,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795682064] [2022-03-15 14:44:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:02,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:02,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:02,300 INFO L87 Difference]: Start difference. First operand 1127 states and 2803 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) [2022-03-15 14:44:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:03,599 INFO L93 Difference]: Finished difference Result 1424 states and 3534 transitions. [2022-03-15 14:44:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:44:03,600 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 [2022-03-15 14:44:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:03,601 INFO L225 Difference]: With dead ends: 1424 [2022-03-15 14:44:03,602 INFO L226 Difference]: Without dead ends: 1245 [2022-03-15 14:44:03,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:44:03,602 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 315 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:03,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2855 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-15 14:44:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1095. [2022-03-15 14:44:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4817184643510055) internal successors, (2715), 1094 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2715 transitions. [2022-03-15 14:44:03,613 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2715 transitions. Word has length 79 [2022-03-15 14:44:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:03,613 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2715 transitions. [2022-03-15 14:44:03,613 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) [2022-03-15 14:44:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2715 transitions. [2022-03-15 14:44:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:03,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:03,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:03,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-15 14:44:03,615 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash 71655142, now seen corresponding path program 153 times [2022-03-15 14:44:03,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:03,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221253039] [2022-03-15 14:44:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:03,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:03,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221253039] [2022-03-15 14:44:03,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221253039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:03,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:03,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:03,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98385923] [2022-03-15 14:44:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:03,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:03,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:03,947 INFO L87 Difference]: Start difference. First operand 1095 states and 2715 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) [2022-03-15 14:44:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:05,318 INFO L93 Difference]: Finished difference Result 1365 states and 3387 transitions. [2022-03-15 14:44:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:44:05,319 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 [2022-03-15 14:44:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:05,320 INFO L225 Difference]: With dead ends: 1365 [2022-03-15 14:44:05,320 INFO L226 Difference]: Without dead ends: 1235 [2022-03-15 14:44:05,321 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 [2022-03-15 14:44:05,321 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 345 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:05,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2771 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-15 14:44:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1107. [2022-03-15 14:44:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.477396021699819) internal successors, (2740), 1106 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2740 transitions. [2022-03-15 14:44:05,332 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2740 transitions. Word has length 79 [2022-03-15 14:44:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:05,333 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2740 transitions. [2022-03-15 14:44:05,333 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) [2022-03-15 14:44:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2740 transitions. [2022-03-15 14:44:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:05,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:05,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:05,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-15 14:44:05,334 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -781736024, now seen corresponding path program 154 times [2022-03-15 14:44:05,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:05,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865550858] [2022-03-15 14:44:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:05,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:05,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865550858] [2022-03-15 14:44:05,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865550858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:05,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:05,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:05,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103561225] [2022-03-15 14:44:05,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:05,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:05,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:05,659 INFO L87 Difference]: Start difference. First operand 1107 states and 2740 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) [2022-03-15 14:44:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:06,912 INFO L93 Difference]: Finished difference Result 1364 states and 3374 transitions. [2022-03-15 14:44:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:44:06,912 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 [2022-03-15 14:44:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:06,914 INFO L225 Difference]: With dead ends: 1364 [2022-03-15 14:44:06,914 INFO L226 Difference]: Without dead ends: 1254 [2022-03-15 14:44:06,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:44:06,914 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 291 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:06,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 3001 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-03-15 14:44:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1103. [2022-03-15 14:44:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.472776769509982) internal successors, (2725), 1102 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2725 transitions. [2022-03-15 14:44:06,925 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2725 transitions. Word has length 79 [2022-03-15 14:44:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:06,925 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2725 transitions. [2022-03-15 14:44:06,925 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) [2022-03-15 14:44:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2725 transitions. [2022-03-15 14:44:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:06,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:06,927 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] [2022-03-15 14:44:06,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-15 14:44:06,927 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash -67498746, now seen corresponding path program 155 times [2022-03-15 14:44:06,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:06,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468809075] [2022-03-15 14:44:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:07,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:07,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468809075] [2022-03-15 14:44:07,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468809075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:07,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:07,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:07,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849843049] [2022-03-15 14:44:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:07,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:07,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:07,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:07,246 INFO L87 Difference]: Start difference. First operand 1103 states and 2725 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) [2022-03-15 14:44:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:08,576 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-03-15 14:44:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:44:08,576 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 [2022-03-15 14:44:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:08,578 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:44:08,578 INFO L226 Difference]: Without dead ends: 1222 [2022-03-15 14:44:08,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:44:08,579 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 341 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:08,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2798 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-15 14:44:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1091. [2022-03-15 14:44:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.477064220183486) internal successors, (2700), 1090 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2700 transitions. [2022-03-15 14:44:08,589 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2700 transitions. Word has length 79 [2022-03-15 14:44:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:08,589 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2700 transitions. [2022-03-15 14:44:08,590 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) [2022-03-15 14:44:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2700 transitions. [2022-03-15 14:44:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:08,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:08,591 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] [2022-03-15 14:44:08,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-15 14:44:08,591 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash 257949480, now seen corresponding path program 156 times [2022-03-15 14:44:08,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:08,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866273948] [2022-03-15 14:44:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:08,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:08,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866273948] [2022-03-15 14:44:08,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866273948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:08,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:08,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:08,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867534117] [2022-03-15 14:44:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:08,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:08,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:08,922 INFO L87 Difference]: Start difference. First operand 1091 states and 2700 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) [2022-03-15 14:44:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:10,280 INFO L93 Difference]: Finished difference Result 1341 states and 3313 transitions. [2022-03-15 14:44:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:44:10,280 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 [2022-03-15 14:44:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:10,282 INFO L225 Difference]: With dead ends: 1341 [2022-03-15 14:44:10,282 INFO L226 Difference]: Without dead ends: 1183 [2022-03-15 14:44:10,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2727, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:44:10,282 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:10,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2933 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-15 14:44:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1079. [2022-03-15 14:44:10,291 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) [2022-03-15 14:44:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-03-15 14:44:10,293 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 79 [2022-03-15 14:44:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:10,293 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-03-15 14:44:10,293 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) [2022-03-15 14:44:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-03-15 14:44:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:10,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:10,294 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] [2022-03-15 14:44:10,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-15 14:44:10,294 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:10,294 INFO L85 PathProgramCache]: Analyzing trace with hash -105440764, now seen corresponding path program 157 times [2022-03-15 14:44:10,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:10,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473130476] [2022-03-15 14:44:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:10,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:10,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:10,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473130476] [2022-03-15 14:44:10,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473130476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:10,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:10,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:10,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270391357] [2022-03-15 14:44:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:10,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:10,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:10,600 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) [2022-03-15 14:44:13,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:44:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:13,274 INFO L93 Difference]: Finished difference Result 1358 states and 3365 transitions. [2022-03-15 14:44:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:44:13,274 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 [2022-03-15 14:44:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:13,276 INFO L225 Difference]: With dead ends: 1358 [2022-03-15 14:44:13,276 INFO L226 Difference]: Without dead ends: 1232 [2022-03-15 14:44:13,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:44:13,277 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 311 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:13,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2784 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 14:44:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-03-15 14:44:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1095. [2022-03-15 14:44:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4926873857404024) internal successors, (2727), 1094 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2727 transitions. [2022-03-15 14:44:13,295 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2727 transitions. Word has length 79 [2022-03-15 14:44:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:13,295 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2727 transitions. [2022-03-15 14:44:13,295 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) [2022-03-15 14:44:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2727 transitions. [2022-03-15 14:44:13,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:13,297 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:13,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:13,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-15 14:44:13,297 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash 413265704, now seen corresponding path program 158 times [2022-03-15 14:44:13,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:13,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309043920] [2022-03-15 14:44:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:13,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:13,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309043920] [2022-03-15 14:44:13,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309043920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:13,612 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:13,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:13,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696773410] [2022-03-15 14:44:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:13,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:13,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:13,612 INFO L87 Difference]: Start difference. First operand 1095 states and 2727 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:14,672 INFO L93 Difference]: Finished difference Result 1309 states and 3249 transitions. [2022-03-15 14:44:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:44:14,672 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 [2022-03-15 14:44:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:14,674 INFO L225 Difference]: With dead ends: 1309 [2022-03-15 14:44:14,674 INFO L226 Difference]: Without dead ends: 1195 [2022-03-15 14:44:14,674 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 [2022-03-15 14:44:14,675 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 306 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:14,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2494 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:14,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-15 14:44:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-03-15 14:44:14,684 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) [2022-03-15 14:44:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:44:14,685 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:44:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:14,685 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:44:14,685 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) [2022-03-15 14:44:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:44:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:14,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:14,686 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] [2022-03-15 14:44:14,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-15 14:44:14,687 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash 46371274, now seen corresponding path program 159 times [2022-03-15 14:44:14,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:14,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23678195] [2022-03-15 14:44:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:15,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:15,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23678195] [2022-03-15 14:44:15,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23678195] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:15,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:15,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:15,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655388323] [2022-03-15 14:44:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:15,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:15,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:15,002 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) [2022-03-15 14:44:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:16,059 INFO L93 Difference]: Finished difference Result 1320 states and 3273 transitions. [2022-03-15 14:44:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 14:44:16,060 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 [2022-03-15 14:44:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:16,061 INFO L225 Difference]: With dead ends: 1320 [2022-03-15 14:44:16,061 INFO L226 Difference]: Without dead ends: 1222 [2022-03-15 14:44:16,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:16,062 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 316 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:16,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2451 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-15 14:44:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1103. [2022-03-15 14:44:16,071 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) [2022-03-15 14:44:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-03-15 14:44:16,072 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-03-15 14:44:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:16,072 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-03-15 14:44:16,072 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) [2022-03-15 14:44:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-03-15 14:44:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:16,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:16,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:16,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-15 14:44:16,074 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 760608552, now seen corresponding path program 160 times [2022-03-15 14:44:16,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:16,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732487102] [2022-03-15 14:44:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:16,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:16,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732487102] [2022-03-15 14:44:16,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732487102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:16,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:16,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:16,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590160050] [2022-03-15 14:44:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:16,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:16,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:16,376 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) [2022-03-15 14:44:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:17,455 INFO L93 Difference]: Finished difference Result 1288 states and 3189 transitions. [2022-03-15 14:44:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:44:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:44:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:17,456 INFO L225 Difference]: With dead ends: 1288 [2022-03-15 14:44:17,457 INFO L226 Difference]: Without dead ends: 1179 [2022-03-15 14:44:17,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:44:17,457 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 288 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:17,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2728 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-03-15 14:44:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1095. [2022-03-15 14:44:17,465 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) [2022-03-15 14:44:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-15 14:44:17,467 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-15 14:44:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:17,467 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-15 14:44:17,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-15 14:44:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:17,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:17,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:17,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-03-15 14:44:17,468 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash 477469666, now seen corresponding path program 161 times [2022-03-15 14:44:17,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:17,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876240022] [2022-03-15 14:44:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:17,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:17,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876240022] [2022-03-15 14:44:17,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876240022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:17,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:17,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:17,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468191046] [2022-03-15 14:44:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:17,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:17,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:17,813 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) [2022-03-15 14:44:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:18,898 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-15 14:44:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:44:18,899 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 [2022-03-15 14:44:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:18,900 INFO L225 Difference]: With dead ends: 1286 [2022-03-15 14:44:18,900 INFO L226 Difference]: Without dead ends: 1143 [2022-03-15 14:44:18,900 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 [2022-03-15 14:44:18,900 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 298 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:18,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2740 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-15 14:44:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-03-15 14:44:18,908 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) [2022-03-15 14:44:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-15 14:44:18,910 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-15 14:44:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-15 14:44:18,910 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) [2022-03-15 14:44:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-15 14:44:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:18,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:18,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:18,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-15 14:44:18,911 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2065183236, now seen corresponding path program 162 times [2022-03-15 14:44:18,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:18,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372984978] [2022-03-15 14:44:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:19,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:19,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372984978] [2022-03-15 14:44:19,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372984978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:19,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:19,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:19,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247897962] [2022-03-15 14:44:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:19,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:19,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:19,227 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) [2022-03-15 14:44:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:20,670 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-15 14:44:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:44:20,671 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 [2022-03-15 14:44:20,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:20,672 INFO L225 Difference]: With dead ends: 1361 [2022-03-15 14:44:20,672 INFO L226 Difference]: Without dead ends: 1263 [2022-03-15 14:44:20,672 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 [2022-03-15 14:44:20,672 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 355 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:20,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2784 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:44:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-15 14:44:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-15 14:44:20,681 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) [2022-03-15 14:44:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-15 14:44:20,683 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-15 14:44:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:20,683 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-15 14:44:20,683 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) [2022-03-15 14:44:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-15 14:44:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:20,684 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:20,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:20,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-15 14:44:20,684 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1311353536, now seen corresponding path program 163 times [2022-03-15 14:44:20,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:20,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385243559] [2022-03-15 14:44:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:20,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:21,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:21,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385243559] [2022-03-15 14:44:21,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385243559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:21,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:21,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:21,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816850392] [2022-03-15 14:44:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:21,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:21,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:21,060 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) [2022-03-15 14:44:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:22,335 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-15 14:44:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:44:22,335 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 [2022-03-15 14:44:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:22,337 INFO L225 Difference]: With dead ends: 1317 [2022-03-15 14:44:22,337 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:44:22,337 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 [2022-03-15 14:44:22,338 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 313 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:22,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 3033 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:44:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-15 14:44:22,347 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) [2022-03-15 14:44:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-15 14:44:22,348 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-15 14:44:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:22,348 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-15 14:44:22,348 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) [2022-03-15 14:44:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-15 14:44:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:22,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:22,349 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] [2022-03-15 14:44:22,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-03-15 14:44:22,350 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:22,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2043766198, now seen corresponding path program 164 times [2022-03-15 14:44:22,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:22,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682572095] [2022-03-15 14:44:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:22,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:22,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682572095] [2022-03-15 14:44:22,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682572095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:22,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:22,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:22,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060360104] [2022-03-15 14:44:22,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:22,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:22,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:22,658 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) [2022-03-15 14:44:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:23,731 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-15 14:44:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:44:23,731 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 [2022-03-15 14:44:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:23,733 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:44:23,733 INFO L226 Difference]: Without dead ends: 1131 [2022-03-15 14:44:23,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:23,734 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 342 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:23,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2551 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-15 14:44:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-15 14:44:23,742 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) [2022-03-15 14:44:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:44:23,743 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:44:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:23,743 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:44:23,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:44:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:23,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:23,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:23,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-03-15 14:44:23,745 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1602076180, now seen corresponding path program 165 times [2022-03-15 14:44:23,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:23,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773613656] [2022-03-15 14:44:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:24,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:24,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773613656] [2022-03-15 14:44:24,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773613656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:24,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:24,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:24,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714845020] [2022-03-15 14:44:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:24,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:24,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:24,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:24,053 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) [2022-03-15 14:44:27,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:44:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:27,242 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-03-15 14:44:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:44:27,242 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 [2022-03-15 14:44:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:27,244 INFO L225 Difference]: With dead ends: 1339 [2022-03-15 14:44:27,244 INFO L226 Difference]: Without dead ends: 1241 [2022-03-15 14:44:27,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 14:44:27,244 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 298 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:27,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2734 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:44:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-03-15 14:44:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-03-15 14:44:27,254 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) [2022-03-15 14:44:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:44:27,255 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:44:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:27,255 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:44:27,255 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) [2022-03-15 14:44:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:44:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:27,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:27,257 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] [2022-03-15 14:44:27,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-15 14:44:27,257 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1939061416, now seen corresponding path program 166 times [2022-03-15 14:44:27,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:27,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9247596] [2022-03-15 14:44:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:27,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:27,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9247596] [2022-03-15 14:44:27,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9247596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:27,570 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:27,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:27,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015453898] [2022-03-15 14:44:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:27,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:27,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:27,571 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) [2022-03-15 14:44:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:28,739 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-03-15 14:44:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:44:28,740 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 [2022-03-15 14:44:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:28,741 INFO L225 Difference]: With dead ends: 1307 [2022-03-15 14:44:28,741 INFO L226 Difference]: Without dead ends: 1172 [2022-03-15 14:44:28,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=2325, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:28,742 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 297 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:28,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2701 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-15 14:44:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-03-15 14:44:28,750 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) [2022-03-15 14:44:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:44:28,752 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:44:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:28,752 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:44:28,752 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) [2022-03-15 14:44:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:44:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:28,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:28,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:28,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-15 14:44:28,753 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 571055852, now seen corresponding path program 167 times [2022-03-15 14:44:28,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:28,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469558912] [2022-03-15 14:44:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:29,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:29,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469558912] [2022-03-15 14:44:29,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469558912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:29,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:29,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:29,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638105069] [2022-03-15 14:44:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:29,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:29,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:29,060 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) [2022-03-15 14:44:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:30,008 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-15 14:44:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:44:30,008 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 [2022-03-15 14:44:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:30,009 INFO L225 Difference]: With dead ends: 1283 [2022-03-15 14:44:30,009 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 14:44:30,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:44:30,009 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 266 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:30,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2601 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 14:44:30,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-03-15 14:44:30,017 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) [2022-03-15 14:44:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2552 transitions. [2022-03-15 14:44:30,018 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2552 transitions. Word has length 79 [2022-03-15 14:44:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2552 transitions. [2022-03-15 14:44:30,018 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) [2022-03-15 14:44:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2552 transitions. [2022-03-15 14:44:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:30,019 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:30,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:30,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-15 14:44:30,020 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 189896908, now seen corresponding path program 168 times [2022-03-15 14:44:30,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:30,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219751911] [2022-03-15 14:44:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:30,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:30,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219751911] [2022-03-15 14:44:30,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219751911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:30,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:30,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:30,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411020568] [2022-03-15 14:44:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:30,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:30,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:30,348 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) [2022-03-15 14:44:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:31,238 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-15 14:44:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:44:31,238 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 [2022-03-15 14:44:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:31,240 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:44:31,240 INFO L226 Difference]: Without dead ends: 1155 [2022-03-15 14:44:31,240 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 [2022-03-15 14:44:31,240 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 239 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:31,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 2544 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-15 14:44:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-03-15 14:44:31,249 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) [2022-03-15 14:44:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-15 14:44:31,250 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-15 14:44:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:31,250 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-15 14:44:31,251 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) [2022-03-15 14:44:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-15 14:44:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:31,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:31,252 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] [2022-03-15 14:44:31,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-15 14:44:31,252 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -663494258, now seen corresponding path program 169 times [2022-03-15 14:44:31,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:31,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971922548] [2022-03-15 14:44:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:31,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:31,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971922548] [2022-03-15 14:44:31,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971922548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:31,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:31,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:31,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994538747] [2022-03-15 14:44:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:31,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:31,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:31,552 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) [2022-03-15 14:44:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:32,455 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-03-15 14:44:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:44:32,455 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 [2022-03-15 14:44:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:32,457 INFO L225 Difference]: With dead ends: 1280 [2022-03-15 14:44:32,457 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:44:32,457 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 [2022-03-15 14:44:32,457 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 288 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:32,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2255 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:44:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1087. [2022-03-15 14:44:32,466 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) [2022-03-15 14:44:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-15 14:44:32,467 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-15 14:44:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:32,467 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-15 14:44:32,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-15 14:44:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:32,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:32,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:32,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-15 14:44:32,469 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 50743020, now seen corresponding path program 170 times [2022-03-15 14:44:32,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:32,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684431642] [2022-03-15 14:44:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:32,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:32,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684431642] [2022-03-15 14:44:32,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684431642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:32,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:32,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:32,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929274971] [2022-03-15 14:44:32,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:32,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:32,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:32,765 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) [2022-03-15 14:44:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:33,677 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-03-15 14:44:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:44:33,677 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 [2022-03-15 14:44:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:33,679 INFO L225 Difference]: With dead ends: 1248 [2022-03-15 14:44:33,679 INFO L226 Difference]: Without dead ends: 1135 [2022-03-15 14:44:33,679 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 [2022-03-15 14:44:33,679 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 260 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:33,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2414 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-03-15 14:44:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1075. [2022-03-15 14:44:33,688 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) [2022-03-15 14:44:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:44:33,689 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:44:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:33,689 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:44:33,689 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) [2022-03-15 14:44:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:44:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:33,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:33,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:33,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-15 14:44:33,691 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 609701612, now seen corresponding path program 171 times [2022-03-15 14:44:33,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:33,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259817998] [2022-03-15 14:44:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:34,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:34,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259817998] [2022-03-15 14:44:34,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259817998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:34,027 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:34,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:34,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328731857] [2022-03-15 14:44:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:34,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:34,028 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) [2022-03-15 14:44:36,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:44:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:36,641 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-03-15 14:44:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:44:36,641 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 [2022-03-15 14:44:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:36,643 INFO L225 Difference]: With dead ends: 1298 [2022-03-15 14:44:36,643 INFO L226 Difference]: Without dead ends: 1200 [2022-03-15 14:44:36,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:44:36,643 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 292 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:36,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2431 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-15 14:44:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-03-15 14:44:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-03-15 14:44:36,652 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) [2022-03-15 14:44:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:44:36,654 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:44:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:44:36,654 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) [2022-03-15 14:44:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:44:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:36,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:36,655 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] [2022-03-15 14:44:36,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-15 14:44:36,655 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -144128088, now seen corresponding path program 172 times [2022-03-15 14:44:36,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:36,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378185035] [2022-03-15 14:44:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:36,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:36,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378185035] [2022-03-15 14:44:36,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378185035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:36,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:36,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:36,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862046383] [2022-03-15 14:44:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:36,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:36,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:36,954 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) [2022-03-15 14:44:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:37,891 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-15 14:44:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:44:37,892 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 [2022-03-15 14:44:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:37,893 INFO L225 Difference]: With dead ends: 1266 [2022-03-15 14:44:37,893 INFO L226 Difference]: Without dead ends: 1115 [2022-03-15 14:44:37,894 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 [2022-03-15 14:44:37,894 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 251 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:37,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2640 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-15 14:44:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-03-15 14:44:37,902 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) [2022-03-15 14:44:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:44:37,903 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:44:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:37,903 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:44:37,903 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) [2022-03-15 14:44:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:44:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:37,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:37,905 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] [2022-03-15 14:44:37,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-03-15 14:44:37,905 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1514641684, now seen corresponding path program 173 times [2022-03-15 14:44:37,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:37,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183689881] [2022-03-15 14:44:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:37,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:38,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:38,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183689881] [2022-03-15 14:44:38,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183689881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:38,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:38,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:38,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248154584] [2022-03-15 14:44:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:38,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:38,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:38,209 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) [2022-03-15 14:44:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:39,589 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-03-15 14:44:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:44:39,590 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 [2022-03-15 14:44:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:39,591 INFO L225 Difference]: With dead ends: 1333 [2022-03-15 14:44:39,591 INFO L226 Difference]: Without dead ends: 1235 [2022-03-15 14:44:39,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 14:44:39,592 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 279 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:39,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2954 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:44:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-15 14:44:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-03-15 14:44:39,601 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) [2022-03-15 14:44:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:44:39,603 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:44:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:39,603 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:44:39,603 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) [2022-03-15 14:44:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:44:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:39,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:39,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:39,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-15 14:44:39,604 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2026495912, now seen corresponding path program 174 times [2022-03-15 14:44:39,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:39,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793609145] [2022-03-15 14:44:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:39,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:39,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:39,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793609145] [2022-03-15 14:44:39,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793609145] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:39,908 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:39,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:39,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452850050] [2022-03-15 14:44:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:39,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:39,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:39,909 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) [2022-03-15 14:44:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:40,998 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-03-15 14:44:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:44:40,998 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 [2022-03-15 14:44:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:41,000 INFO L225 Difference]: With dead ends: 1289 [2022-03-15 14:44:41,000 INFO L226 Difference]: Without dead ends: 1154 [2022-03-15 14:44:41,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:41,000 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 320 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:41,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2819 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-15 14:44:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1063. [2022-03-15 14:44:41,012 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) [2022-03-15 14:44:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:44:41,013 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:44:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:41,014 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:44:41,014 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) [2022-03-15 14:44:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:44:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:41,015 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:41,015 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] [2022-03-15 14:44:41,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-03-15 14:44:41,015 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1328623822, now seen corresponding path program 175 times [2022-03-15 14:44:41,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:41,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582594981] [2022-03-15 14:44:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:41,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:41,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582594981] [2022-03-15 14:44:41,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582594981] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:41,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:41,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:41,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918958183] [2022-03-15 14:44:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:41,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:41,313 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) [2022-03-15 14:44:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:42,249 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-15 14:44:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:44:42,249 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 [2022-03-15 14:44:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:42,250 INFO L225 Difference]: With dead ends: 1277 [2022-03-15 14:44:42,251 INFO L226 Difference]: Without dead ends: 1107 [2022-03-15 14:44:42,251 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 [2022-03-15 14:44:42,251 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 274 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:42,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2723 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-15 14:44:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-15 14:44:42,268 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) [2022-03-15 14:44:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:44:42,270 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:44:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:42,270 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:44:42,270 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) [2022-03-15 14:44:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:44:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:42,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:42,271 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] [2022-03-15 14:44:42,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-03-15 14:44:42,271 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1449938546, now seen corresponding path program 176 times [2022-03-15 14:44:42,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:42,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764255495] [2022-03-15 14:44:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:42,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:42,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764255495] [2022-03-15 14:44:42,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764255495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:42,624 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:42,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:42,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679276939] [2022-03-15 14:44:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:42,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:42,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:42,625 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) [2022-03-15 14:44:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:43,865 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-03-15 14:44:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:44:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:44:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:43,867 INFO L225 Difference]: With dead ends: 1331 [2022-03-15 14:44:43,867 INFO L226 Difference]: Without dead ends: 1233 [2022-03-15 14:44:43,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:43,868 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 270 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2859 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-03-15 14:44:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1099. [2022-03-15 14:44:43,877 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) [2022-03-15 14:44:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:44:43,878 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:44:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:43,878 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:44:43,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:44:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:43,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:43,880 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] [2022-03-15 14:44:43,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-15 14:44:43,880 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2091199050, now seen corresponding path program 177 times [2022-03-15 14:44:43,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:43,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392228965] [2022-03-15 14:44:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:44,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:44,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392228965] [2022-03-15 14:44:44,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392228965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:44,190 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:44,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:44,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366447462] [2022-03-15 14:44:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:44,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:44,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:44,191 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) [2022-03-15 14:44:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:45,460 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-15 14:44:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:44:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:44:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:45,462 INFO L225 Difference]: With dead ends: 1299 [2022-03-15 14:44:45,462 INFO L226 Difference]: Without dead ends: 1164 [2022-03-15 14:44:45,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:44:45,462 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 287 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:45,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2839 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:44:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-15 14:44:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1075. [2022-03-15 14:44:45,471 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) [2022-03-15 14:44:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:44:45,472 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:44:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:45,472 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:44:45,472 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) [2022-03-15 14:44:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:44:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:45,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:45,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:45,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-15 14:44:45,473 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 723193486, now seen corresponding path program 178 times [2022-03-15 14:44:45,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:45,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314503784] [2022-03-15 14:44:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:45,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:45,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314503784] [2022-03-15 14:44:45,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314503784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:45,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:45,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:45,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721901192] [2022-03-15 14:44:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:45,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:45,779 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) [2022-03-15 14:44:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:46,709 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-15 14:44:46,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:44:46,709 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 [2022-03-15 14:44:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:46,711 INFO L225 Difference]: With dead ends: 1275 [2022-03-15 14:44:46,711 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 14:44:46,711 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 [2022-03-15 14:44:46,711 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 273 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:46,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2477 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 14:44:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1035. [2022-03-15 14:44:46,721 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) [2022-03-15 14:44:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-15 14:44:46,723 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-15 14:44:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:46,723 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-15 14:44:46,723 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) [2022-03-15 14:44:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-15 14:44:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:46,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:46,724 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] [2022-03-15 14:44:46,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-15 14:44:46,724 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1425342066, now seen corresponding path program 179 times [2022-03-15 14:44:46,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:46,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198181559] [2022-03-15 14:44:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:47,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:47,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198181559] [2022-03-15 14:44:47,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198181559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:47,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:47,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:47,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794080501] [2022-03-15 14:44:47,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:47,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:47,047 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) [2022-03-15 14:44:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:48,789 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-03-15 14:44:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:44:48,789 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 [2022-03-15 14:44:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:48,790 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:44:48,790 INFO L226 Difference]: Without dead ends: 1249 [2022-03-15 14:44:48,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:44:48,791 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 312 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:48,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2891 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:44:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-03-15 14:44:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-03-15 14:44:48,800 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) [2022-03-15 14:44:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:44:48,801 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:44:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:48,801 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:44:48,801 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) [2022-03-15 14:44:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:44:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:48,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:48,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:48,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-15 14:44:48,802 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2115795530, now seen corresponding path program 180 times [2022-03-15 14:44:48,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:48,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136442858] [2022-03-15 14:44:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:49,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:49,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136442858] [2022-03-15 14:44:49,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136442858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:49,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:49,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:44:49,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402723413] [2022-03-15 14:44:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:49,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:44:49,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:44:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:44:49,131 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) [2022-03-15 14:44:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:50,363 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-15 14:44:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:44:50,363 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 [2022-03-15 14:44:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:50,364 INFO L225 Difference]: With dead ends: 1303 [2022-03-15 14:44:50,364 INFO L226 Difference]: Without dead ends: 1168 [2022-03-15 14:44:50,364 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 [2022-03-15 14:44:50,365 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 296 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:50,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2998 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-15 14:44:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-15 14:44:50,373 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) [2022-03-15 14:44:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-15 14:44:50,374 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-15 14:44:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:50,374 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-15 14:44:50,374 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) [2022-03-15 14:44:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-15 14:44:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:50,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:50,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:50,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-15 14:44:50,375 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 747789966, now seen corresponding path program 181 times [2022-03-15 14:44:50,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:50,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339364266] [2022-03-15 14:44:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:50,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:50,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339364266] [2022-03-15 14:44:50,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339364266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:50,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:50,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:50,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716073254] [2022-03-15 14:44:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:50,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:50,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:50,686 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) [2022-03-15 14:44:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:51,695 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-15 14:44:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:44:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:44:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:51,697 INFO L225 Difference]: With dead ends: 1267 [2022-03-15 14:44:51,697 INFO L226 Difference]: Without dead ends: 1087 [2022-03-15 14:44:51,697 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 [2022-03-15 14:44:51,697 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 287 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:51,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2642 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-15 14:44:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-15 14:44:51,705 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) [2022-03-15 14:44:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-15 14:44:51,707 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-15 14:44:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:51,707 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-15 14:44:51,707 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) [2022-03-15 14:44:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-15 14:44:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:51,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:51,708 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] [2022-03-15 14:44:51,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-15 14:44:51,708 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 508677382, now seen corresponding path program 182 times [2022-03-15 14:44:51,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:51,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011098024] [2022-03-15 14:44:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:52,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:52,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011098024] [2022-03-15 14:44:52,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011098024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:52,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:52,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:44:52,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627010320] [2022-03-15 14:44:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:52,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:44:52,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:44:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:44:52,016 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) [2022-03-15 14:44:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:52,826 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-15 14:44:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:44:52,826 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 [2022-03-15 14:44:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:52,828 INFO L225 Difference]: With dead ends: 1282 [2022-03-15 14:44:52,828 INFO L226 Difference]: Without dead ends: 1043 [2022-03-15 14:44:52,828 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 [2022-03-15 14:44:52,828 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 261 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:52,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2637 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-15 14:44:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1015. [2022-03-15 14:44:52,836 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) [2022-03-15 14:44:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2523 transitions. [2022-03-15 14:44:52,837 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2523 transitions. Word has length 79 [2022-03-15 14:44:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:52,837 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2523 transitions. [2022-03-15 14:44:52,837 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) [2022-03-15 14:44:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2523 transitions. [2022-03-15 14:44:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:52,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:52,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:52,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-15 14:44:52,838 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1155448216, now seen corresponding path program 183 times [2022-03-15 14:44:52,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:52,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978273838] [2022-03-15 14:44:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:53,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:53,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978273838] [2022-03-15 14:44:53,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978273838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:53,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:53,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:53,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99005982] [2022-03-15 14:44:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:53,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:53,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:53,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:53,145 INFO L87 Difference]: Start difference. First operand 1015 states and 2523 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) [2022-03-15 14:44:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:55,413 INFO L93 Difference]: Finished difference Result 1333 states and 3327 transitions. [2022-03-15 14:44:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:44:55,413 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 [2022-03-15 14:44:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:55,414 INFO L225 Difference]: With dead ends: 1333 [2022-03-15 14:44:55,414 INFO L226 Difference]: Without dead ends: 1203 [2022-03-15 14:44:55,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=2321, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:44:55,415 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 325 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:55,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2599 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:44:55,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-15 14:44:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1095. [2022-03-15 14:44:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.5) internal successors, (2735), 1094 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) [2022-03-15 14:44:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2735 transitions. [2022-03-15 14:44:55,425 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2735 transitions. Word has length 79 [2022-03-15 14:44:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:55,425 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2735 transitions. [2022-03-15 14:44:55,425 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) [2022-03-15 14:44:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2735 transitions. [2022-03-15 14:44:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:55,427 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:55,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-15 14:44:55,427 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2008839382, now seen corresponding path program 184 times [2022-03-15 14:44:55,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:55,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439556033] [2022-03-15 14:44:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:55,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:55,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439556033] [2022-03-15 14:44:55,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439556033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:55,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:55,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:55,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276561716] [2022-03-15 14:44:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:55,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:55,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:55,723 INFO L87 Difference]: Start difference. First operand 1095 states and 2735 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) [2022-03-15 14:44:58,801 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 [] [2022-03-15 14:44:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:59,312 INFO L93 Difference]: Finished difference Result 1364 states and 3398 transitions. [2022-03-15 14:44:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:44:59,312 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 [2022-03-15 14:44:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:59,314 INFO L225 Difference]: With dead ends: 1364 [2022-03-15 14:44:59,314 INFO L226 Difference]: Without dead ends: 1266 [2022-03-15 14:44:59,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=2601, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:44:59,314 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 326 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:59,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2685 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1085 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:44:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-03-15 14:44:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1123. [2022-03-15 14:44:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4955436720142603) internal successors, (2800), 1122 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2800 transitions. [2022-03-15 14:44:59,329 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2800 transitions. Word has length 79 [2022-03-15 14:44:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:59,329 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2800 transitions. [2022-03-15 14:44:59,329 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) [2022-03-15 14:44:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2800 transitions. [2022-03-15 14:44:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:44:59,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:59,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:59,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-03-15 14:44:59,331 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1294602104, now seen corresponding path program 185 times [2022-03-15 14:44:59,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:59,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442372183] [2022-03-15 14:44:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:59,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:59,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:59,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442372183] [2022-03-15 14:44:59,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442372183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:44:59,718 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:44:59,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:44:59,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105080536] [2022-03-15 14:44:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:44:59,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:44:59,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:44:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:44:59,719 INFO L87 Difference]: Start difference. First operand 1123 states and 2800 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) [2022-03-15 14:45:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:01,560 INFO L93 Difference]: Finished difference Result 1347 states and 3349 transitions. [2022-03-15 14:45:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:45:01,560 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 [2022-03-15 14:45:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:01,562 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:45:01,562 INFO L226 Difference]: Without dead ends: 1234 [2022-03-15 14:45:01,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:45:01,563 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 344 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:01,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2756 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 14:45:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-03-15 14:45:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1115. [2022-03-15 14:45:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4937163375224416) internal successors, (2778), 1114 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2778 transitions. [2022-03-15 14:45:01,575 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2778 transitions. Word has length 79 [2022-03-15 14:45:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:01,575 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2778 transitions. [2022-03-15 14:45:01,576 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) [2022-03-15 14:45:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2778 transitions. [2022-03-15 14:45:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:01,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:01,577 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] [2022-03-15 14:45:01,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-03-15 14:45:01,577 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash -735643512, now seen corresponding path program 186 times [2022-03-15 14:45:01,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:01,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321432130] [2022-03-15 14:45:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:01,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:01,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321432130] [2022-03-15 14:45:01,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321432130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:01,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:01,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:01,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606075282] [2022-03-15 14:45:01,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:01,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:01,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:01,892 INFO L87 Difference]: Start difference. First operand 1115 states and 2778 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) [2022-03-15 14:45:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:03,164 INFO L93 Difference]: Finished difference Result 1366 states and 3391 transitions. [2022-03-15 14:45:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:45:03,164 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 [2022-03-15 14:45:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:03,166 INFO L225 Difference]: With dead ends: 1366 [2022-03-15 14:45:03,166 INFO L226 Difference]: Without dead ends: 1268 [2022-03-15 14:45:03,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:45:03,166 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 270 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:03,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2991 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:45:03,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-03-15 14:45:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1139. [2022-03-15 14:45:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.492091388400703) internal successors, (2836), 1138 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2836 transitions. [2022-03-15 14:45:03,177 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2836 transitions. Word has length 79 [2022-03-15 14:45:03,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:03,177 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2836 transitions. [2022-03-15 14:45:03,177 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) [2022-03-15 14:45:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2836 transitions. [2022-03-15 14:45:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:03,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:03,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:03,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-03-15 14:45:03,179 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473212, now seen corresponding path program 187 times [2022-03-15 14:45:03,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:03,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173819010] [2022-03-15 14:45:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:03,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:03,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173819010] [2022-03-15 14:45:03,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173819010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:03,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:03,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:03,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501120305] [2022-03-15 14:45:03,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:03,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:03,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:03,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:03,485 INFO L87 Difference]: Start difference. First operand 1139 states and 2836 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) [2022-03-15 14:45:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:04,710 INFO L93 Difference]: Finished difference Result 1349 states and 3338 transitions. [2022-03-15 14:45:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:45:04,710 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 [2022-03-15 14:45:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:04,712 INFO L225 Difference]: With dead ends: 1349 [2022-03-15 14:45:04,712 INFO L226 Difference]: Without dead ends: 1198 [2022-03-15 14:45:04,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:04,712 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 290 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:04,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2707 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:45:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-15 14:45:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1099. [2022-03-15 14:45:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.482695810564663) internal successors, (2726), 1098 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2726 transitions. [2022-03-15 14:45:04,722 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2726 transitions. Word has length 79 [2022-03-15 14:45:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:04,722 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2726 transitions. [2022-03-15 14:45:04,722 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) [2022-03-15 14:45:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2726 transitions. [2022-03-15 14:45:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:04,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:04,724 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] [2022-03-15 14:45:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-15 14:45:04,724 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:04,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1783520184, now seen corresponding path program 188 times [2022-03-15 14:45:04,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:04,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723870566] [2022-03-15 14:45:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:04,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:05,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:05,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723870566] [2022-03-15 14:45:05,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723870566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:05,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:05,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:05,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189441617] [2022-03-15 14:45:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:05,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:05,034 INFO L87 Difference]: Start difference. First operand 1099 states and 2726 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) [2022-03-15 14:45:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:06,602 INFO L93 Difference]: Finished difference Result 1341 states and 3321 transitions. [2022-03-15 14:45:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:45:06,602 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 [2022-03-15 14:45:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:06,604 INFO L225 Difference]: With dead ends: 1341 [2022-03-15 14:45:06,604 INFO L226 Difference]: Without dead ends: 1211 [2022-03-15 14:45:06,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:45:06,604 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 349 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:06,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2683 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:45:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-15 14:45:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1111. [2022-03-15 14:45:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4783783783783786) internal successors, (2751), 1110 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2751 transitions. [2022-03-15 14:45:06,616 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2751 transitions. Word has length 79 [2022-03-15 14:45:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:06,616 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2751 transitions. [2022-03-15 14:45:06,617 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) [2022-03-15 14:45:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2751 transitions. [2022-03-15 14:45:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:06,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:06,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:06,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-15 14:45:06,618 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1658055946, now seen corresponding path program 189 times [2022-03-15 14:45:06,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:06,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739777005] [2022-03-15 14:45:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:06,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:06,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739777005] [2022-03-15 14:45:06,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739777005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:06,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:06,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:06,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519638434] [2022-03-15 14:45:06,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:06,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:06,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:06,941 INFO L87 Difference]: Start difference. First operand 1111 states and 2751 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) [2022-03-15 14:45:09,451 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 [] [2022-03-15 14:45:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:10,247 INFO L93 Difference]: Finished difference Result 1332 states and 3290 transitions. [2022-03-15 14:45:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:45:10,247 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 [2022-03-15 14:45:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:10,248 INFO L225 Difference]: With dead ends: 1332 [2022-03-15 14:45:10,248 INFO L226 Difference]: Without dead ends: 1206 [2022-03-15 14:45:10,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:45:10,249 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 298 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:10,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 3055 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1175 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:45:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-15 14:45:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1087. [2022-03-15 14:45:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1086 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2697 transitions. [2022-03-15 14:45:10,259 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2697 transitions. Word has length 79 [2022-03-15 14:45:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:10,259 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2697 transitions. [2022-03-15 14:45:10,259 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) [2022-03-15 14:45:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2697 transitions. [2022-03-15 14:45:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:10,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:10,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:10,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-15 14:45:10,261 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1922674072, now seen corresponding path program 190 times [2022-03-15 14:45:10,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:10,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966090021] [2022-03-15 14:45:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:10,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:10,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966090021] [2022-03-15 14:45:10,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966090021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:10,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:10,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:10,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743796991] [2022-03-15 14:45:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:10,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:10,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:10,578 INFO L87 Difference]: Start difference. First operand 1087 states and 2697 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) [2022-03-15 14:45:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:12,245 INFO L93 Difference]: Finished difference Result 1287 states and 3180 transitions. [2022-03-15 14:45:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:45:12,245 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 [2022-03-15 14:45:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:12,246 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:45:12,246 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 14:45:12,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2619, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:45:12,247 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 308 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:12,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 3031 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:45:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 14:45:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1075. [2022-03-15 14:45:12,255 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) [2022-03-15 14:45:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-15 14:45:12,256 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-15 14:45:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:12,256 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-15 14:45:12,256 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) [2022-03-15 14:45:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-15 14:45:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:12,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:12,257 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] [2022-03-15 14:45:12,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-15 14:45:12,257 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1597225846, now seen corresponding path program 191 times [2022-03-15 14:45:12,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:12,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618099120] [2022-03-15 14:45:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:12,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:12,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618099120] [2022-03-15 14:45:12,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618099120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:12,570 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:12,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:12,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515338006] [2022-03-15 14:45:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:12,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:12,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:12,571 INFO L87 Difference]: Start difference. First operand 1075 states and 2672 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) [2022-03-15 14:45:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:13,948 INFO L93 Difference]: Finished difference Result 1285 states and 3179 transitions. [2022-03-15 14:45:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:45:13,948 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 [2022-03-15 14:45:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:13,950 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:45:13,950 INFO L226 Difference]: Without dead ends: 1127 [2022-03-15 14:45:13,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=2242, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:13,950 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 296 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:13,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2754 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:45:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-15 14:45:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-03-15 14:45:13,959 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) [2022-03-15 14:45:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-03-15 14:45:13,960 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-03-15 14:45:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:13,960 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-03-15 14:45:13,960 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) [2022-03-15 14:45:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-03-15 14:45:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:13,961 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:13,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:13,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-15 14:45:13,963 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1441909622, now seen corresponding path program 192 times [2022-03-15 14:45:13,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:13,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87053034] [2022-03-15 14:45:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:13,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:14,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:14,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87053034] [2022-03-15 14:45:14,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87053034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:14,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:14,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:14,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048007111] [2022-03-15 14:45:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:14,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:14,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:14,287 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) [2022-03-15 14:45:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:15,420 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-03-15 14:45:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:45:15,420 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 [2022-03-15 14:45:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:15,422 INFO L225 Difference]: With dead ends: 1281 [2022-03-15 14:45:15,422 INFO L226 Difference]: Without dead ends: 1167 [2022-03-15 14:45:15,422 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 [2022-03-15 14:45:15,422 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 274 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:15,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2522 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:45:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-03-15 14:45:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1087. [2022-03-15 14:45:15,431 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) [2022-03-15 14:45:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:45:15,433 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:45:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:15,433 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:45:15,433 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) [2022-03-15 14:45:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:45:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:15,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:15,435 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] [2022-03-15 14:45:15,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-15 14:45:15,435 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:15,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1808804052, now seen corresponding path program 193 times [2022-03-15 14:45:15,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:15,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434846798] [2022-03-15 14:45:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:15,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:15,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434846798] [2022-03-15 14:45:15,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434846798] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:15,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:15,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:15,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327665388] [2022-03-15 14:45:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:15,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:15,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:15,738 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) [2022-03-15 14:45:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:17,046 INFO L93 Difference]: Finished difference Result 1292 states and 3204 transitions. [2022-03-15 14:45:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:45:17,046 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 [2022-03-15 14:45:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:17,048 INFO L225 Difference]: With dead ends: 1292 [2022-03-15 14:45:17,048 INFO L226 Difference]: Without dead ends: 1194 [2022-03-15 14:45:17,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:17,048 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 302 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:17,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2601 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:45:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-03-15 14:45:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-03-15 14:45:17,057 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) [2022-03-15 14:45:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-03-15 14:45:17,058 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-03-15 14:45:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:17,059 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-03-15 14:45:17,059 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) [2022-03-15 14:45:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-03-15 14:45:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:17,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:17,060 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] [2022-03-15 14:45:17,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-15 14:45:17,060 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:17,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:17,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1094566774, now seen corresponding path program 194 times [2022-03-15 14:45:17,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:17,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205639707] [2022-03-15 14:45:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:17,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:17,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:17,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205639707] [2022-03-15 14:45:17,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205639707] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:17,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:17,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:17,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122444247] [2022-03-15 14:45:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:17,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:17,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:17,362 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) [2022-03-15 14:45:18,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:18,457 INFO L93 Difference]: Finished difference Result 1260 states and 3120 transitions. [2022-03-15 14:45:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:45:18,457 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 [2022-03-15 14:45:18,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:18,458 INFO L225 Difference]: With dead ends: 1260 [2022-03-15 14:45:18,458 INFO L226 Difference]: Without dead ends: 1151 [2022-03-15 14:45:18,458 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 [2022-03-15 14:45:18,459 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 295 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2405 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:45:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-03-15 14:45:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1083. [2022-03-15 14:45:18,467 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) [2022-03-15 14:45:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-15 14:45:18,468 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-15 14:45:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:18,468 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-15 14:45:18,468 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) [2022-03-15 14:45:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-15 14:45:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:18,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:18,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:18,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-15 14:45:18,469 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -623875960, now seen corresponding path program 195 times [2022-03-15 14:45:18,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:18,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582921450] [2022-03-15 14:45:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:18,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:18,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582921450] [2022-03-15 14:45:18,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582921450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:18,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:18,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:18,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561754591] [2022-03-15 14:45:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:18,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:18,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:18,767 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) [2022-03-15 14:45:21,255 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 [] [2022-03-15 14:45:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:21,941 INFO L93 Difference]: Finished difference Result 1314 states and 3256 transitions. [2022-03-15 14:45:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:45:21,941 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 [2022-03-15 14:45:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:21,943 INFO L225 Difference]: With dead ends: 1314 [2022-03-15 14:45:21,943 INFO L226 Difference]: Without dead ends: 1216 [2022-03-15 14:45:21,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2231, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:21,944 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 275 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:21,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2673 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:45:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-03-15 14:45:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1107. [2022-03-15 14:45:21,953 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) [2022-03-15 14:45:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-15 14:45:21,954 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-15 14:45:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:21,954 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-15 14:45:21,954 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) [2022-03-15 14:45:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-15 14:45:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:21,960 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:21,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:21,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-15 14:45:21,961 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1377705660, now seen corresponding path program 196 times [2022-03-15 14:45:21,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:21,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127389975] [2022-03-15 14:45:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:22,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:22,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127389975] [2022-03-15 14:45:22,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127389975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:22,263 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:22,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:22,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841344424] [2022-03-15 14:45:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:22,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:22,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:22,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:22,264 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) [2022-03-15 14:45:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:23,462 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-15 14:45:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:45:23,462 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 [2022-03-15 14:45:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:23,464 INFO L225 Difference]: With dead ends: 1282 [2022-03-15 14:45:23,464 INFO L226 Difference]: Without dead ends: 1139 [2022-03-15 14:45:23,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:23,464 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 287 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:23,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2503 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:45:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-15 14:45:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1075. [2022-03-15 14:45:23,473 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) [2022-03-15 14:45:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:45:23,474 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:45:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:23,474 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:45:23,474 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) [2022-03-15 14:45:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:45:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:23,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:23,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-15 14:45:23,476 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 210007910, now seen corresponding path program 197 times [2022-03-15 14:45:23,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:23,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023835437] [2022-03-15 14:45:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:23,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:23,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023835437] [2022-03-15 14:45:23,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023835437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:23,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:23,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:23,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266167038] [2022-03-15 14:45:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:23,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:23,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:23,822 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) [2022-03-15 14:45:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:25,228 INFO L93 Difference]: Finished difference Result 1357 states and 3364 transitions. [2022-03-15 14:45:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:45:25,229 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 [2022-03-15 14:45:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:25,230 INFO L225 Difference]: With dead ends: 1357 [2022-03-15 14:45:25,230 INFO L226 Difference]: Without dead ends: 1259 [2022-03-15 14:45:25,231 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 [2022-03-15 14:45:25,231 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 301 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:25,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2937 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:45:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-15 14:45:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1103. [2022-03-15 14:45:25,240 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) [2022-03-15 14:45:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-03-15 14:45:25,241 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-03-15 14:45:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:25,241 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-03-15 14:45:25,241 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) [2022-03-15 14:45:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-03-15 14:45:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:25,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:25,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:25,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-15 14:45:25,243 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:25,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash -543821790, now seen corresponding path program 198 times [2022-03-15 14:45:25,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:25,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059234215] [2022-03-15 14:45:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:25,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:25,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059234215] [2022-03-15 14:45:25,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059234215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:25,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:25,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:25,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236662590] [2022-03-15 14:45:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:25,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:25,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:25,558 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) [2022-03-15 14:45:28,472 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 [] [2022-03-15 14:45:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:29,153 INFO L93 Difference]: Finished difference Result 1365 states and 3374 transitions. [2022-03-15 14:45:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:45:29,153 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 [2022-03-15 14:45:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:29,155 INFO L225 Difference]: With dead ends: 1365 [2022-03-15 14:45:29,155 INFO L226 Difference]: Without dead ends: 1230 [2022-03-15 14:45:29,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=3037, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:45:29,155 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 355 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:29,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3081 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1157 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:45:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-03-15 14:45:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1131. [2022-03-15 14:45:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4867256637168142) internal successors, (2810), 1130 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2810 transitions. [2022-03-15 14:45:29,166 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2810 transitions. Word has length 79 [2022-03-15 14:45:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:29,166 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2810 transitions. [2022-03-15 14:45:29,166 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) [2022-03-15 14:45:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2810 transitions. [2022-03-15 14:45:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:29,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:29,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:29,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-15 14:45:29,168 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash 396025772, now seen corresponding path program 199 times [2022-03-15 14:45:29,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:29,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177982449] [2022-03-15 14:45:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:29,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:29,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:29,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177982449] [2022-03-15 14:45:29,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177982449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:29,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:29,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:29,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569039585] [2022-03-15 14:45:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:29,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:29,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:29,475 INFO L87 Difference]: Start difference. First operand 1131 states and 2810 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:30,673 INFO L93 Difference]: Finished difference Result 1361 states and 3359 transitions. [2022-03-15 14:45:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:45:30,673 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 [2022-03-15 14:45:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:30,674 INFO L225 Difference]: With dead ends: 1361 [2022-03-15 14:45:30,674 INFO L226 Difference]: Without dead ends: 1175 [2022-03-15 14:45:30,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:45:30,675 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 299 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:30,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 3038 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:45:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-03-15 14:45:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1111. [2022-03-15 14:45:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4783783783783786) internal successors, (2751), 1110 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2751 transitions. [2022-03-15 14:45:30,685 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2751 transitions. Word has length 79 [2022-03-15 14:45:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:30,685 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2751 transitions. [2022-03-15 14:45:30,685 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) [2022-03-15 14:45:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2751 transitions. [2022-03-15 14:45:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:30,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:30,686 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] [2022-03-15 14:45:30,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-15 14:45:30,686 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:30,687 INFO L85 PathProgramCache]: Analyzing trace with hash 837715790, now seen corresponding path program 200 times [2022-03-15 14:45:30,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:30,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316039464] [2022-03-15 14:45:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:30,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:30,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:30,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316039464] [2022-03-15 14:45:30,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316039464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:30,996 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:30,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:30,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110305930] [2022-03-15 14:45:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:30,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:30,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:30,996 INFO L87 Difference]: Start difference. First operand 1111 states and 2751 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) [2022-03-15 14:45:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:33,091 INFO L93 Difference]: Finished difference Result 1387 states and 3414 transitions. [2022-03-15 14:45:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:45:33,091 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 [2022-03-15 14:45:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:33,093 INFO L225 Difference]: With dead ends: 1387 [2022-03-15 14:45:33,093 INFO L226 Difference]: Without dead ends: 1289 [2022-03-15 14:45:33,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 14:45:33,093 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 310 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:33,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2917 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 14:45:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-03-15 14:45:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1143. [2022-03-15 14:45:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4859894921190895) internal successors, (2839), 1142 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2839 transitions. [2022-03-15 14:45:33,103 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2839 transitions. Word has length 79 [2022-03-15 14:45:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:33,104 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2839 transitions. [2022-03-15 14:45:33,104 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) [2022-03-15 14:45:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2839 transitions. [2022-03-15 14:45:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:33,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:33,105 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] [2022-03-15 14:45:33,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-03-15 14:45:33,105 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash 83886090, now seen corresponding path program 201 times [2022-03-15 14:45:33,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:33,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350400365] [2022-03-15 14:45:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:33,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:33,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350400365] [2022-03-15 14:45:33,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350400365] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:33,411 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:33,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:33,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670578722] [2022-03-15 14:45:33,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:33,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:33,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:33,412 INFO L87 Difference]: Start difference. First operand 1143 states and 2839 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) [2022-03-15 14:45:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:35,480 INFO L93 Difference]: Finished difference Result 1355 states and 3326 transitions. [2022-03-15 14:45:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:45:35,480 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 [2022-03-15 14:45:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:35,482 INFO L225 Difference]: With dead ends: 1355 [2022-03-15 14:45:35,482 INFO L226 Difference]: Without dead ends: 1220 [2022-03-15 14:45:35,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:45:35,482 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 276 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:35,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2868 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 14:45:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-15 14:45:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1135. [2022-03-15 14:45:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4770723104056436) internal successors, (2809), 1134 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2809 transitions. [2022-03-15 14:45:35,493 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2809 transitions. Word has length 79 [2022-03-15 14:45:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:35,501 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2809 transitions. [2022-03-15 14:45:35,501 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) [2022-03-15 14:45:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2809 transitions. [2022-03-15 14:45:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:35,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:35,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:35,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-03-15 14:45:35,503 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1284119474, now seen corresponding path program 202 times [2022-03-15 14:45:35,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:35,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098697165] [2022-03-15 14:45:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:35,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:35,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098697165] [2022-03-15 14:45:35,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098697165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:35,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:35,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:35,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689477223] [2022-03-15 14:45:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:35,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:35,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:35,814 INFO L87 Difference]: Start difference. First operand 1135 states and 2809 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) [2022-03-15 14:45:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:36,794 INFO L93 Difference]: Finished difference Result 1331 states and 3260 transitions. [2022-03-15 14:45:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:45:36,795 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 [2022-03-15 14:45:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:36,796 INFO L225 Difference]: With dead ends: 1331 [2022-03-15 14:45:36,796 INFO L226 Difference]: Without dead ends: 1127 [2022-03-15 14:45:36,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:45:36,797 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 264 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:36,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2647 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-15 14:45:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1087. [2022-03-15 14:45:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.472375690607735) internal successors, (2685), 1086 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) [2022-03-15 14:45:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2685 transitions. [2022-03-15 14:45:36,807 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2685 transitions. Word has length 79 [2022-03-15 14:45:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:36,807 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2685 transitions. [2022-03-15 14:45:36,807 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) [2022-03-15 14:45:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2685 transitions. [2022-03-15 14:45:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:36,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:36,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:36,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-15 14:45:36,808 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash 171320586, now seen corresponding path program 203 times [2022-03-15 14:45:36,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:36,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836823643] [2022-03-15 14:45:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:37,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:37,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836823643] [2022-03-15 14:45:37,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836823643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:37,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:37,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:37,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027480400] [2022-03-15 14:45:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:37,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:37,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:37,138 INFO L87 Difference]: Start difference. First operand 1087 states and 2685 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) [2022-03-15 14:45:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:38,328 INFO L93 Difference]: Finished difference Result 1411 states and 3484 transitions. [2022-03-15 14:45:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:45:38,328 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 [2022-03-15 14:45:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:38,330 INFO L225 Difference]: With dead ends: 1411 [2022-03-15 14:45:38,330 INFO L226 Difference]: Without dead ends: 1224 [2022-03-15 14:45:38,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2619, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:45:38,330 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 336 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:38,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2634 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:45:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-03-15 14:45:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1087. [2022-03-15 14:45:38,339 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) [2022-03-15 14:45:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:45:38,340 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:45:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:38,340 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:45:38,340 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) [2022-03-15 14:45:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:45:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:38,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:38,342 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] [2022-03-15 14:45:38,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-15 14:45:38,342 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1671139944, now seen corresponding path program 204 times [2022-03-15 14:45:38,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:38,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932203955] [2022-03-15 14:45:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:38,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:38,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932203955] [2022-03-15 14:45:38,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932203955] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:38,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:38,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:38,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127739258] [2022-03-15 14:45:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:38,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:38,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:38,631 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) [2022-03-15 14:45:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:39,500 INFO L93 Difference]: Finished difference Result 1273 states and 3146 transitions. [2022-03-15 14:45:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:45:39,503 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 [2022-03-15 14:45:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:39,504 INFO L225 Difference]: With dead ends: 1273 [2022-03-15 14:45:39,504 INFO L226 Difference]: Without dead ends: 1159 [2022-03-15 14:45:39,504 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 [2022-03-15 14:45:39,505 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 231 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:39,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 2360 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-03-15 14:45:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1091. [2022-03-15 14:45:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4844036697247707) internal successors, (2708), 1090 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2708 transitions. [2022-03-15 14:45:39,517 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2708 transitions. Word has length 79 [2022-03-15 14:45:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:39,517 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2708 transitions. [2022-03-15 14:45:39,517 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) [2022-03-15 14:45:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2708 transitions. [2022-03-15 14:45:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:39,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:39,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:39,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-15 14:45:39,519 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1304245514, now seen corresponding path program 205 times [2022-03-15 14:45:39,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:39,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687305350] [2022-03-15 14:45:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:39,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:39,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687305350] [2022-03-15 14:45:39,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687305350] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:39,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:39,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:39,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728540709] [2022-03-15 14:45:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:39,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:39,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:39,806 INFO L87 Difference]: Start difference. First operand 1091 states and 2708 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) [2022-03-15 14:45:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:40,701 INFO L93 Difference]: Finished difference Result 1284 states and 3170 transitions. [2022-03-15 14:45:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:45:40,702 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 [2022-03-15 14:45:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:40,703 INFO L225 Difference]: With dead ends: 1284 [2022-03-15 14:45:40,703 INFO L226 Difference]: Without dead ends: 1186 [2022-03-15 14:45:40,704 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 [2022-03-15 14:45:40,704 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 274 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:40,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2204 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-15 14:45:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1095. [2022-03-15 14:45:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4817184643510055) internal successors, (2715), 1094 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2715 transitions. [2022-03-15 14:45:40,722 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2715 transitions. Word has length 79 [2022-03-15 14:45:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:40,722 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2715 transitions. [2022-03-15 14:45:40,722 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) [2022-03-15 14:45:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2715 transitions. [2022-03-15 14:45:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:40,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:40,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:40,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-15 14:45:40,723 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2018482792, now seen corresponding path program 206 times [2022-03-15 14:45:40,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:40,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506766859] [2022-03-15 14:45:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:40,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:41,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:41,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506766859] [2022-03-15 14:45:41,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506766859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:41,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:41,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:41,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32193994] [2022-03-15 14:45:41,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:41,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:41,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:41,026 INFO L87 Difference]: Start difference. First operand 1095 states and 2715 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) [2022-03-15 14:45:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:41,923 INFO L93 Difference]: Finished difference Result 1252 states and 3086 transitions. [2022-03-15 14:45:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:45:41,923 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 [2022-03-15 14:45:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:41,925 INFO L225 Difference]: With dead ends: 1252 [2022-03-15 14:45:41,925 INFO L226 Difference]: Without dead ends: 1143 [2022-03-15 14:45:41,925 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 [2022-03-15 14:45:41,925 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 269 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:41,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2264 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-15 14:45:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1087. [2022-03-15 14:45:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1086 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2697 transitions. [2022-03-15 14:45:41,935 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2697 transitions. Word has length 79 [2022-03-15 14:45:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2697 transitions. [2022-03-15 14:45:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2697 transitions. [2022-03-15 14:45:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:41,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:41,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:41,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-03-15 14:45:41,936 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:41,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1805793690, now seen corresponding path program 207 times [2022-03-15 14:45:41,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:41,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689873185] [2022-03-15 14:45:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:42,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:42,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689873185] [2022-03-15 14:45:42,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689873185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:42,239 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:42,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:42,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500088810] [2022-03-15 14:45:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:42,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:42,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:42,240 INFO L87 Difference]: Start difference. First operand 1087 states and 2697 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) [2022-03-15 14:45:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:43,117 INFO L93 Difference]: Finished difference Result 1249 states and 3072 transitions. [2022-03-15 14:45:43,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:45:43,118 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 [2022-03-15 14:45:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:43,119 INFO L225 Difference]: With dead ends: 1249 [2022-03-15 14:45:43,119 INFO L226 Difference]: Without dead ends: 1131 [2022-03-15 14:45:43,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:45:43,120 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 226 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:43,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 2201 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-15 14:45:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1079. [2022-03-15 14:45:43,128 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) [2022-03-15 14:45:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-03-15 14:45:43,129 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 79 [2022-03-15 14:45:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-03-15 14:45:43,130 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) [2022-03-15 14:45:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-03-15 14:45:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:43,131 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:43,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-03-15 14:45:43,131 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:43,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -971909820, now seen corresponding path program 208 times [2022-03-15 14:45:43,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:43,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210465831] [2022-03-15 14:45:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:43,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:43,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210465831] [2022-03-15 14:45:43,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210465831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:43,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:43,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:43,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700508947] [2022-03-15 14:45:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:43,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:43,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:43,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:43,436 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) [2022-03-15 14:45:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:44,434 INFO L93 Difference]: Finished difference Result 1276 states and 3148 transitions. [2022-03-15 14:45:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:45:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:45:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:44,436 INFO L225 Difference]: With dead ends: 1276 [2022-03-15 14:45:44,436 INFO L226 Difference]: Without dead ends: 1166 [2022-03-15 14:45:44,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2140, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:45:44,436 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 288 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:44,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2522 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-15 14:45:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1067. [2022-03-15 14:45:44,444 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) [2022-03-15 14:45:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-15 14:45:44,446 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-15 14:45:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:44,446 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-15 14:45:44,446 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) [2022-03-15 14:45:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-15 14:45:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:44,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:44,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:44,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-15 14:45:44,447 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -785891958, now seen corresponding path program 209 times [2022-03-15 14:45:44,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:44,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490462391] [2022-03-15 14:45:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:44,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:44,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490462391] [2022-03-15 14:45:44,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490462391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:44,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:44,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:44,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985475319] [2022-03-15 14:45:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:44,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:44,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:44,739 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) [2022-03-15 14:45:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:45,648 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-03-15 14:45:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:45:45,649 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 [2022-03-15 14:45:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:45,650 INFO L225 Difference]: With dead ends: 1277 [2022-03-15 14:45:45,650 INFO L226 Difference]: Without dead ends: 1111 [2022-03-15 14:45:45,650 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 [2022-03-15 14:45:45,651 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 286 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:45,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2444 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-03-15 14:45:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1059. [2022-03-15 14:45:45,659 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) [2022-03-15 14:45:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:45:45,660 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:45:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:45,660 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:45:45,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:45:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:45,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:45,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:45,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-03-15 14:45:45,661 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1676455758, now seen corresponding path program 210 times [2022-03-15 14:45:45,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:45,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024191932] [2022-03-15 14:45:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:46,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:46,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024191932] [2022-03-15 14:45:46,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024191932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:46,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:46,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:46,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490483007] [2022-03-15 14:45:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:46,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:46,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:46,044 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) [2022-03-15 14:45:48,448 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 [] [2022-03-15 14:45:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:48,891 INFO L93 Difference]: Finished difference Result 1335 states and 3295 transitions. [2022-03-15 14:45:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:45:48,891 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 [2022-03-15 14:45:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:48,893 INFO L225 Difference]: With dead ends: 1335 [2022-03-15 14:45:48,893 INFO L226 Difference]: Without dead ends: 1237 [2022-03-15 14:45:48,893 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 [2022-03-15 14:45:48,894 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 270 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:48,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2848 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 14:45:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-03-15 14:45:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1107. [2022-03-15 14:45:48,902 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) [2022-03-15 14:45:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-03-15 14:45:48,904 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-03-15 14:45:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:48,904 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-03-15 14:45:48,904 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) [2022-03-15 14:45:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-03-15 14:45:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:48,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:48,905 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] [2022-03-15 14:45:48,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-03-15 14:45:48,905 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash 922626058, now seen corresponding path program 211 times [2022-03-15 14:45:48,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:48,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452705885] [2022-03-15 14:45:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:49,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:49,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452705885] [2022-03-15 14:45:49,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452705885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:49,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:49,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:45:49,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695671542] [2022-03-15 14:45:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:49,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:45:49,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:45:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:45:49,230 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) [2022-03-15 14:45:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:50,489 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-03-15 14:45:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:45:50,489 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 [2022-03-15 14:45:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:50,491 INFO L225 Difference]: With dead ends: 1303 [2022-03-15 14:45:50,491 INFO L226 Difference]: Without dead ends: 1168 [2022-03-15 14:45:50,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:45:50,491 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 301 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:50,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2683 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:45:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-15 14:45:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1083. [2022-03-15 14:45:50,500 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) [2022-03-15 14:45:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-03-15 14:45:50,501 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-03-15 14:45:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:50,501 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-03-15 14:45:50,501 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) [2022-03-15 14:45:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-03-15 14:45:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:50,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:50,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:50,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-15 14:45:50,502 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash -445379506, now seen corresponding path program 212 times [2022-03-15 14:45:50,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:50,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107741895] [2022-03-15 14:45:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:50,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:50,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107741895] [2022-03-15 14:45:50,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107741895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:50,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:50,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:45:50,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317310266] [2022-03-15 14:45:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:50,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:45:50,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:45:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:45:50,799 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) [2022-03-15 14:45:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:51,718 INFO L93 Difference]: Finished difference Result 1279 states and 3141 transitions. [2022-03-15 14:45:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:45:51,718 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 [2022-03-15 14:45:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:51,719 INFO L225 Difference]: With dead ends: 1279 [2022-03-15 14:45:51,719 INFO L226 Difference]: Without dead ends: 1091 [2022-03-15 14:45:51,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:45:51,720 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 284 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:51,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2467 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-15 14:45:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-15 14:45:51,728 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) [2022-03-15 14:45:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:45:51,729 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:45:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:51,729 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:45:51,729 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) [2022-03-15 14:45:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:45:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:51,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:51,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:51,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-15 14:45:51,730 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1014449904, now seen corresponding path program 213 times [2022-03-15 14:45:51,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:51,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055457278] [2022-03-15 14:45:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:51,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:52,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:52,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055457278] [2022-03-15 14:45:52,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055457278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:52,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:52,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:52,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725512867] [2022-03-15 14:45:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:52,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:52,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:52,041 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) [2022-03-15 14:45:54,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:45:56,842 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 [] [2022-03-15 14:45:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:57,060 INFO L93 Difference]: Finished difference Result 1455 states and 3571 transitions. [2022-03-15 14:45:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:45:57,060 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 [2022-03-15 14:45:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:57,061 INFO L225 Difference]: With dead ends: 1455 [2022-03-15 14:45:57,062 INFO L226 Difference]: Without dead ends: 1357 [2022-03-15 14:45:57,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=279, Invalid=3261, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:45:57,062 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 373 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:57,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2907 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1111 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-15 14:45:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-03-15 14:45:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1079. [2022-03-15 14:45:57,071 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) [2022-03-15 14:45:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-15 14:45:57,072 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-15 14:45:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:57,072 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-15 14:45:57,072 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) [2022-03-15 14:45:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-15 14:45:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:45:57,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:57,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:57,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-15 14:45:57,074 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1728687182, now seen corresponding path program 214 times [2022-03-15 14:45:57,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:57,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259128544] [2022-03-15 14:45:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:57,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:57,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259128544] [2022-03-15 14:45:57,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259128544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:45:57,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:45:57,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:45:57,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857831968] [2022-03-15 14:45:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:45:57,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:45:57,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:45:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:45:57,394 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 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) [2022-03-15 14:46:00,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:46:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:01,441 INFO L93 Difference]: Finished difference Result 1347 states and 3328 transitions. [2022-03-15 14:46:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:46:01,441 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 [2022-03-15 14:46:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:01,442 INFO L225 Difference]: With dead ends: 1347 [2022-03-15 14:46:01,442 INFO L226 Difference]: Without dead ends: 1196 [2022-03-15 14:46:01,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=3044, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:46:01,443 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 345 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:01,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2730 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1042 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-15 14:46:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-03-15 14:46:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1067. [2022-03-15 14:46:01,451 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) [2022-03-15 14:46:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-15 14:46:01,453 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-15 14:46:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:01,453 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-15 14:46:01,453 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) [2022-03-15 14:46:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-15 14:46:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:01,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:01,454 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] [2022-03-15 14:46:01,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-15 14:46:01,454 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1200467766, now seen corresponding path program 215 times [2022-03-15 14:46:01,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:01,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354750965] [2022-03-15 14:46:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:01,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:01,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354750965] [2022-03-15 14:46:01,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354750965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:01,760 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:01,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:46:01,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770905895] [2022-03-15 14:46:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:01,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:46:01,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:46:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:46:01,761 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) [2022-03-15 14:46:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:02,836 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-03-15 14:46:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:46:02,837 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 [2022-03-15 14:46:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:02,838 INFO L225 Difference]: With dead ends: 1323 [2022-03-15 14:46:02,838 INFO L226 Difference]: Without dead ends: 1115 [2022-03-15 14:46:02,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=2338, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:46:02,839 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 332 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:02,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2678 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:46:02,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-03-15 14:46:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1055. [2022-03-15 14:46:02,847 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) [2022-03-15 14:46:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-03-15 14:46:02,848 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-03-15 14:46:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:02,849 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-03-15 14:46:02,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-03-15 14:46:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:02,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:02,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:02,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-15 14:46:02,850 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1346497944, now seen corresponding path program 216 times [2022-03-15 14:46:02,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:02,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889959025] [2022-03-15 14:46:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:03,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:03,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889959025] [2022-03-15 14:46:03,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889959025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:03,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:03,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:46:03,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633465697] [2022-03-15 14:46:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:03,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:46:03,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:46:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:46:03,153 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) [2022-03-15 14:46:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:04,046 INFO L93 Difference]: Finished difference Result 1310 states and 3220 transitions. [2022-03-15 14:46:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:46:04,046 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 [2022-03-15 14:46:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:04,048 INFO L225 Difference]: With dead ends: 1310 [2022-03-15 14:46:04,048 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 14:46:04,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:46:04,048 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 298 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:04,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2579 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:46:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 14:46:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-03-15 14:46:04,056 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) [2022-03-15 14:46:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-15 14:46:04,057 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-15 14:46:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:04,057 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-15 14:46:04,057 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) [2022-03-15 14:46:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-15 14:46:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:04,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:04,058 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] [2022-03-15 14:46:04,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-15 14:46:04,058 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1252614178, now seen corresponding path program 217 times [2022-03-15 14:46:04,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:04,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476850527] [2022-03-15 14:46:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:04,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:04,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476850527] [2022-03-15 14:46:04,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476850527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:04,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:04,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:46:04,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600052965] [2022-03-15 14:46:04,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:04,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:46:04,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:46:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:46:04,368 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) [2022-03-15 14:46:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:06,351 INFO L93 Difference]: Finished difference Result 1355 states and 3346 transitions. [2022-03-15 14:46:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:46:06,351 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 [2022-03-15 14:46:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:06,353 INFO L225 Difference]: With dead ends: 1355 [2022-03-15 14:46:06,353 INFO L226 Difference]: Without dead ends: 1257 [2022-03-15 14:46:06,353 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 [2022-03-15 14:46:06,353 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 328 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:06,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2522 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:46:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-15 14:46:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1099. [2022-03-15 14:46:06,362 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) [2022-03-15 14:46:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:46:06,364 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:46:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:06,364 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:46:06,364 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) [2022-03-15 14:46:06,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:46:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:06,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:06,365 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] [2022-03-15 14:46:06,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-15 14:46:06,365 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash 498784478, now seen corresponding path program 218 times [2022-03-15 14:46:06,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:06,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065533940] [2022-03-15 14:46:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:06,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:06,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065533940] [2022-03-15 14:46:06,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065533940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:06,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:06,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:46:06,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226921652] [2022-03-15 14:46:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:06,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:46:06,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:46:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:46:06,673 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) [2022-03-15 14:46:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:08,025 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-03-15 14:46:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:46:08,025 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 [2022-03-15 14:46:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:08,027 INFO L225 Difference]: With dead ends: 1311 [2022-03-15 14:46:08,027 INFO L226 Difference]: Without dead ends: 1176 [2022-03-15 14:46:08,027 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 [2022-03-15 14:46:08,027 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 329 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:08,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2794 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:46:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-03-15 14:46:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-03-15 14:46:08,035 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) [2022-03-15 14:46:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:46:08,037 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:46:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:08,037 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:46:08,037 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) [2022-03-15 14:46:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:46:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:08,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:08,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:08,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-15 14:46:08,038 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -869221086, now seen corresponding path program 219 times [2022-03-15 14:46:08,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:08,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543215153] [2022-03-15 14:46:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:08,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:08,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543215153] [2022-03-15 14:46:08,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543215153] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:08,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:08,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:46:08,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136130010] [2022-03-15 14:46:08,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:08,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:46:08,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:08,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:46:08,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:46:08,330 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) [2022-03-15 14:46:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:09,234 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-15 14:46:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:46:09,234 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 [2022-03-15 14:46:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:09,236 INFO L225 Difference]: With dead ends: 1275 [2022-03-15 14:46:09,236 INFO L226 Difference]: Without dead ends: 1095 [2022-03-15 14:46:09,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:46:09,236 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 301 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:09,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2293 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-03-15 14:46:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1051. [2022-03-15 14:46:09,244 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) [2022-03-15 14:46:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2606 transitions. [2022-03-15 14:46:09,246 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2606 transitions. Word has length 79 [2022-03-15 14:46:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:09,253 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2606 transitions. [2022-03-15 14:46:09,254 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) [2022-03-15 14:46:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2606 transitions. [2022-03-15 14:46:09,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:09,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:09,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:09,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-15 14:46:09,255 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1108333670, now seen corresponding path program 220 times [2022-03-15 14:46:09,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:09,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900651902] [2022-03-15 14:46:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:09,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:09,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900651902] [2022-03-15 14:46:09,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900651902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:09,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:09,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-15 14:46:09,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421572754] [2022-03-15 14:46:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:09,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:46:09,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:46:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:46:09,534 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) [2022-03-15 14:46:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:10,292 INFO L93 Difference]: Finished difference Result 1298 states and 3187 transitions. [2022-03-15 14:46:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:46:10,292 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 [2022-03-15 14:46:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:10,294 INFO L225 Difference]: With dead ends: 1298 [2022-03-15 14:46:10,294 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 14:46:10,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:46:10,294 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 296 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-15 14:46:10,294 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] [2022-03-15 14:46:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 14:46:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1047. [2022-03-15 14:46:10,302 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) [2022-03-15 14:46:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2595 transitions. [2022-03-15 14:46:10,303 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2595 transitions. Word has length 79 [2022-03-15 14:46:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:10,303 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2595 transitions. [2022-03-15 14:46:10,304 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) [2022-03-15 14:46:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2595 transitions. [2022-03-15 14:46:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:10,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:10,305 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] [2022-03-15 14:46:10,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-15 14:46:10,305 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 846733228, now seen corresponding path program 221 times [2022-03-15 14:46:10,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:10,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638982400] [2022-03-15 14:46:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:10,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:10,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638982400] [2022-03-15 14:46:10,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638982400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:10,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:10,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-15 14:46:10,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351310259] [2022-03-15 14:46:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:10,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 14:46:10,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 14:46:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-03-15 14:46:10,617 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) [2022-03-15 14:46:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:11,381 INFO L93 Difference]: Finished difference Result 1316 states and 3224 transitions. [2022-03-15 14:46:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:46:11,381 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 [2022-03-15 14:46:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:11,383 INFO L225 Difference]: With dead ends: 1316 [2022-03-15 14:46:11,383 INFO L226 Difference]: Without dead ends: 1015 [2022-03-15 14:46:11,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:46:11,383 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:11,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2497 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-15 14:46:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 999. [2022-03-15 14:46:11,391 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) [2022-03-15 14:46:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2479 transitions. [2022-03-15 14:46:11,392 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2479 transitions. Word has length 79 [2022-03-15 14:46:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:11,392 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 2479 transitions. [2022-03-15 14:46:11,392 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) [2022-03-15 14:46:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2479 transitions. [2022-03-15 14:46:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:11,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:11,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:11,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-15 14:46:11,393 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1779561880, now seen corresponding path program 222 times [2022-03-15 14:46:11,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:11,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480517882] [2022-03-15 14:46:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:11,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:11,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480517882] [2022-03-15 14:46:11,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480517882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:11,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:11,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:11,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040557233] [2022-03-15 14:46:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:11,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:11,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:11,706 INFO L87 Difference]: Start difference. First operand 999 states and 2479 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) [2022-03-15 14:46:13,882 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 [] [2022-03-15 14:46:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:14,207 INFO L93 Difference]: Finished difference Result 1345 states and 3360 transitions. [2022-03-15 14:46:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:46:14,207 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 [2022-03-15 14:46:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:14,209 INFO L225 Difference]: With dead ends: 1345 [2022-03-15 14:46:14,209 INFO L226 Difference]: Without dead ends: 1215 [2022-03-15 14:46:14,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=3037, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:46:14,209 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 362 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:14,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2871 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:46:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-15 14:46:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1083. [2022-03-15 14:46:14,218 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) [2022-03-15 14:46:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-03-15 14:46:14,219 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-03-15 14:46:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:14,219 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-03-15 14:46:14,219 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) [2022-03-15 14:46:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-03-15 14:46:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:14,220 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:14,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:14,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-03-15 14:46:14,220 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1662014250, now seen corresponding path program 223 times [2022-03-15 14:46:14,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:14,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848557255] [2022-03-15 14:46:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:14,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:14,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848557255] [2022-03-15 14:46:14,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848557255] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:14,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:14,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:14,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568850970] [2022-03-15 14:46:14,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:14,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:14,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:14,533 INFO L87 Difference]: Start difference. First operand 1083 states and 2702 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) [2022-03-15 14:46:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:16,173 INFO L93 Difference]: Finished difference Result 1340 states and 3340 transitions. [2022-03-15 14:46:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:46:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:46:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:16,175 INFO L225 Difference]: With dead ends: 1340 [2022-03-15 14:46:16,175 INFO L226 Difference]: Without dead ends: 1242 [2022-03-15 14:46:16,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=3030, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:46:16,175 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 322 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:16,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2827 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:46:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-03-15 14:46:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1087. [2022-03-15 14:46:16,184 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) [2022-03-15 14:46:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-03-15 14:46:16,186 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-03-15 14:46:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:16,186 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-03-15 14:46:16,186 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) [2022-03-15 14:46:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-03-15 14:46:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:16,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:16,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:16,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-03-15 14:46:16,187 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1918715768, now seen corresponding path program 224 times [2022-03-15 14:46:16,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:16,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119786738] [2022-03-15 14:46:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:16,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:16,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119786738] [2022-03-15 14:46:16,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119786738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:16,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:16,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:16,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042076152] [2022-03-15 14:46:16,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:16,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:16,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:16,508 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 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) [2022-03-15 14:46:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:18,356 INFO L93 Difference]: Finished difference Result 1308 states and 3256 transitions. [2022-03-15 14:46:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:46:18,356 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 [2022-03-15 14:46:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:18,358 INFO L225 Difference]: With dead ends: 1308 [2022-03-15 14:46:18,358 INFO L226 Difference]: Without dead ends: 1195 [2022-03-15 14:46:18,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:46:18,359 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 313 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:18,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2736 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:46:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-15 14:46:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1075. [2022-03-15 14:46:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4953445065176907) internal successors, (2680), 1074 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) [2022-03-15 14:46:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2680 transitions. [2022-03-15 14:46:18,368 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2680 transitions. Word has length 79 [2022-03-15 14:46:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:18,369 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2680 transitions. [2022-03-15 14:46:18,369 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) [2022-03-15 14:46:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2680 transitions. [2022-03-15 14:46:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:18,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:18,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:18,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-15 14:46:18,370 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1359757176, now seen corresponding path program 225 times [2022-03-15 14:46:18,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:18,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978434613] [2022-03-15 14:46:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:18,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:18,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978434613] [2022-03-15 14:46:18,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978434613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:18,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:18,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:18,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889535881] [2022-03-15 14:46:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:18,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:18,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:18,691 INFO L87 Difference]: Start difference. First operand 1075 states and 2680 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) [2022-03-15 14:46:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:20,698 INFO L93 Difference]: Finished difference Result 1350 states and 3359 transitions. [2022-03-15 14:46:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:46:20,699 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 [2022-03-15 14:46:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:20,700 INFO L225 Difference]: With dead ends: 1350 [2022-03-15 14:46:20,701 INFO L226 Difference]: Without dead ends: 1252 [2022-03-15 14:46:20,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=2926, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:46:20,701 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 297 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:20,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3138 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:46:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-03-15 14:46:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1099. [2022-03-15 14:46:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.493624772313297) internal successors, (2738), 1098 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) [2022-03-15 14:46:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2738 transitions. [2022-03-15 14:46:20,711 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2738 transitions. Word has length 79 [2022-03-15 14:46:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:20,711 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2738 transitions. [2022-03-15 14:46:20,711 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) [2022-03-15 14:46:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2738 transitions. [2022-03-15 14:46:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:20,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:20,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:20,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-15 14:46:20,713 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2113586876, now seen corresponding path program 226 times [2022-03-15 14:46:20,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:20,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291425826] [2022-03-15 14:46:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:21,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:21,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291425826] [2022-03-15 14:46:21,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291425826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:21,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:21,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:21,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872710937] [2022-03-15 14:46:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:21,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:21,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:21,059 INFO L87 Difference]: Start difference. First operand 1099 states and 2738 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:22,481 INFO L93 Difference]: Finished difference Result 1333 states and 3306 transitions. [2022-03-15 14:46:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:46:22,482 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 [2022-03-15 14:46:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:22,483 INFO L225 Difference]: With dead ends: 1333 [2022-03-15 14:46:22,483 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:46:22,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:46:22,484 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 296 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:22,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2974 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:46:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:46:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1059. [2022-03-15 14:46:22,492 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) [2022-03-15 14:46:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:46:22,493 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:46:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:22,494 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:46:22,494 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) [2022-03-15 14:46:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:46:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:22,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:22,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:22,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-15 14:46:22,495 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1887333448, now seen corresponding path program 227 times [2022-03-15 14:46:22,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:22,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870249147] [2022-03-15 14:46:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:22,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:22,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870249147] [2022-03-15 14:46:22,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870249147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:22,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:22,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:22,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585761252] [2022-03-15 14:46:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:22,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:22,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:22,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:22,822 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 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) [2022-03-15 14:46:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:24,200 INFO L93 Difference]: Finished difference Result 1329 states and 3304 transitions. [2022-03-15 14:46:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:46:24,200 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 [2022-03-15 14:46:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:24,202 INFO L225 Difference]: With dead ends: 1329 [2022-03-15 14:46:24,202 INFO L226 Difference]: Without dead ends: 1199 [2022-03-15 14:46:24,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:46:24,203 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 344 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:24,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 3038 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:46:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-03-15 14:46:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1071. [2022-03-15 14:46:24,212 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) [2022-03-15 14:46:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-03-15 14:46:24,213 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-03-15 14:46:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:24,213 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-03-15 14:46:24,213 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) [2022-03-15 14:46:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-03-15 14:46:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:24,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:24,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-15 14:46:24,214 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1033942282, now seen corresponding path program 228 times [2022-03-15 14:46:24,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:24,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781725130] [2022-03-15 14:46:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:24,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:24,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781725130] [2022-03-15 14:46:24,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781725130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:24,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:24,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:24,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536927553] [2022-03-15 14:46:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:24,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:24,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:24,546 INFO L87 Difference]: Start difference. First operand 1071 states and 2657 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) [2022-03-15 14:46:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:25,927 INFO L93 Difference]: Finished difference Result 1320 states and 3273 transitions. [2022-03-15 14:46:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:46:25,927 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 [2022-03-15 14:46:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:25,929 INFO L225 Difference]: With dead ends: 1320 [2022-03-15 14:46:25,929 INFO L226 Difference]: Without dead ends: 1222 [2022-03-15 14:46:25,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=3263, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:46:25,929 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 325 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:25,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2880 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:46:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-03-15 14:46:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1075. [2022-03-15 14:46:25,939 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) [2022-03-15 14:46:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2664 transitions. [2022-03-15 14:46:25,940 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2664 transitions. Word has length 79 [2022-03-15 14:46:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:25,940 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2664 transitions. [2022-03-15 14:46:25,940 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) [2022-03-15 14:46:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2664 transitions. [2022-03-15 14:46:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:25,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:25,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:25,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-15 14:46:25,941 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1748179560, now seen corresponding path program 229 times [2022-03-15 14:46:25,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:25,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497515732] [2022-03-15 14:46:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:26,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:26,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497515732] [2022-03-15 14:46:26,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497515732] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:26,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:26,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:26,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911258327] [2022-03-15 14:46:26,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:26,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:26,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:26,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:26,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:26,364 INFO L87 Difference]: Start difference. First operand 1075 states and 2664 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) [2022-03-15 14:46:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:27,819 INFO L93 Difference]: Finished difference Result 1303 states and 3224 transitions. [2022-03-15 14:46:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:46:27,819 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 [2022-03-15 14:46:27,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:27,821 INFO L225 Difference]: With dead ends: 1303 [2022-03-15 14:46:27,821 INFO L226 Difference]: Without dead ends: 1190 [2022-03-15 14:46:27,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=3263, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:46:27,821 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 336 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:27,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 3056 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:46:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-03-15 14:46:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1063. [2022-03-15 14:46:27,830 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) [2022-03-15 14:46:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:46:27,831 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:46:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:27,831 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:46:27,831 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) [2022-03-15 14:46:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:46:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:27,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:27,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:27,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-15 14:46:27,833 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2073627786, now seen corresponding path program 230 times [2022-03-15 14:46:27,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:27,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317263738] [2022-03-15 14:46:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:28,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:28,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317263738] [2022-03-15 14:46:28,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317263738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:28,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:28,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:28,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573525874] [2022-03-15 14:46:28,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:28,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:28,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:28,262 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 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) [2022-03-15 14:46:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:29,953 INFO L93 Difference]: Finished difference Result 1313 states and 3252 transitions. [2022-03-15 14:46:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:46:29,953 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 [2022-03-15 14:46:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:29,955 INFO L225 Difference]: With dead ends: 1313 [2022-03-15 14:46:29,955 INFO L226 Difference]: Without dead ends: 1155 [2022-03-15 14:46:29,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:46:29,955 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 306 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:29,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3044 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:46:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-15 14:46:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1051. [2022-03-15 14:46:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4895238095238095) internal successors, (2614), 1050 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2614 transitions. [2022-03-15 14:46:29,965 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2614 transitions. Word has length 79 [2022-03-15 14:46:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:29,965 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2614 transitions. [2022-03-15 14:46:29,965 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) [2022-03-15 14:46:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2614 transitions. [2022-03-15 14:46:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:29,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:29,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:29,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-15 14:46:29,966 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2066023286, now seen corresponding path program 231 times [2022-03-15 14:46:29,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:29,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635996995] [2022-03-15 14:46:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:30,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:30,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635996995] [2022-03-15 14:46:30,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635996995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:30,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:30,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:30,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321792367] [2022-03-15 14:46:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:30,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:30,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:30,339 INFO L87 Difference]: Start difference. First operand 1051 states and 2614 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) [2022-03-15 14:46:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:31,611 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-03-15 14:46:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:46:31,611 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 [2022-03-15 14:46:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:31,612 INFO L225 Difference]: With dead ends: 1285 [2022-03-15 14:46:31,612 INFO L226 Difference]: Without dead ends: 1171 [2022-03-15 14:46:31,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2622, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:46:31,613 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 286 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:31,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2661 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:46:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-03-15 14:46:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1075. [2022-03-15 14:46:31,621 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) [2022-03-15 14:46:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:46:31,622 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:46:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:31,622 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:46:31,622 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) [2022-03-15 14:46:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:46:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:31,623 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:31,624 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] [2022-03-15 14:46:31,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-15 14:46:31,624 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1862049580, now seen corresponding path program 232 times [2022-03-15 14:46:31,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:31,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810246817] [2022-03-15 14:46:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:31,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:31,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810246817] [2022-03-15 14:46:31,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810246817] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:31,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:31,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:31,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412436506] [2022-03-15 14:46:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:31,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:31,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:31,940 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) [2022-03-15 14:46:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:33,196 INFO L93 Difference]: Finished difference Result 1296 states and 3215 transitions. [2022-03-15 14:46:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:46:33,196 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 [2022-03-15 14:46:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:33,198 INFO L225 Difference]: With dead ends: 1296 [2022-03-15 14:46:33,198 INFO L226 Difference]: Without dead ends: 1198 [2022-03-15 14:46:33,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:46:33,198 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 295 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:33,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2747 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:46:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-15 14:46:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1079. [2022-03-15 14:46:33,207 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) [2022-03-15 14:46:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-03-15 14:46:33,208 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-03-15 14:46:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:33,208 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-03-15 14:46:33,209 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) [2022-03-15 14:46:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-03-15 14:46:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:33,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:33,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:33,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-03-15 14:46:33,210 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1718680438, now seen corresponding path program 233 times [2022-03-15 14:46:33,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:33,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568725318] [2022-03-15 14:46:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:33,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:33,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568725318] [2022-03-15 14:46:33,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568725318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:33,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:33,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:33,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151949875] [2022-03-15 14:46:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:33,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:33,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:33,555 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 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) [2022-03-15 14:46:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:35,756 INFO L93 Difference]: Finished difference Result 1264 states and 3131 transitions. [2022-03-15 14:46:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:46:35,756 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 [2022-03-15 14:46:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:35,758 INFO L225 Difference]: With dead ends: 1264 [2022-03-15 14:46:35,758 INFO L226 Difference]: Without dead ends: 1155 [2022-03-15 14:46:35,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2717, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:46:35,758 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 343 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:35,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2564 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 14:46:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-03-15 14:46:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1071. [2022-03-15 14:46:35,767 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) [2022-03-15 14:46:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-03-15 14:46:35,768 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-03-15 14:46:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:35,768 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-03-15 14:46:35,768 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) [2022-03-15 14:46:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-03-15 14:46:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:35,769 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:35,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:35,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-03-15 14:46:35,770 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1247989624, now seen corresponding path program 234 times [2022-03-15 14:46:35,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:35,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965654879] [2022-03-15 14:46:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:36,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:36,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965654879] [2022-03-15 14:46:36,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965654879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:36,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:36,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:36,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884397123] [2022-03-15 14:46:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:36,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:36,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:36,093 INFO L87 Difference]: Start difference. First operand 1071 states and 2665 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) [2022-03-15 14:46:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:37,832 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-03-15 14:46:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:46:37,832 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 [2022-03-15 14:46:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:37,834 INFO L225 Difference]: With dead ends: 1318 [2022-03-15 14:46:37,834 INFO L226 Difference]: Without dead ends: 1220 [2022-03-15 14:46:37,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=268, Invalid=2924, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:46:37,835 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 319 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:37,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2830 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:46:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-03-15 14:46:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1095. [2022-03-15 14:46:37,843 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) [2022-03-15 14:46:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-15 14:46:37,845 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-15 14:46:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:37,845 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-15 14:46:37,845 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) [2022-03-15 14:46:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-15 14:46:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:37,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:37,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:37,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-15 14:46:37,846 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2001819324, now seen corresponding path program 235 times [2022-03-15 14:46:37,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:37,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596807588] [2022-03-15 14:46:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:38,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:38,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596807588] [2022-03-15 14:46:38,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596807588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:38,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:38,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:38,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3472507] [2022-03-15 14:46:38,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:38,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:38,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:38,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:38,166 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) [2022-03-15 14:46:40,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:46:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:41,297 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-03-15 14:46:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:46:41,298 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 [2022-03-15 14:46:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:41,299 INFO L225 Difference]: With dead ends: 1286 [2022-03-15 14:46:41,299 INFO L226 Difference]: Without dead ends: 1143 [2022-03-15 14:46:41,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=2820, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:46:41,300 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 337 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:41,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2798 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-15 14:46:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-03-15 14:46:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-03-15 14:46:41,308 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) [2022-03-15 14:46:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-15 14:46:41,309 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-15 14:46:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:41,309 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-15 14:46:41,310 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) [2022-03-15 14:46:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-15 14:46:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:41,311 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:41,311 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] [2022-03-15 14:46:41,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-15 14:46:41,311 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -414105754, now seen corresponding path program 236 times [2022-03-15 14:46:41,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:41,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295506266] [2022-03-15 14:46:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:41,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:41,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295506266] [2022-03-15 14:46:41,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295506266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:41,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:41,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:41,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194390021] [2022-03-15 14:46:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:41,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:41,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:41,646 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) [2022-03-15 14:46:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:44,483 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-03-15 14:46:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:46:44,484 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 [2022-03-15 14:46:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:44,485 INFO L225 Difference]: With dead ends: 1361 [2022-03-15 14:46:44,485 INFO L226 Difference]: Without dead ends: 1263 [2022-03-15 14:46:44,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=3607, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:46:44,486 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 371 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:44,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 3119 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:46:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-03-15 14:46:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-03-15 14:46:44,495 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) [2022-03-15 14:46:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-15 14:46:44,497 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-15 14:46:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:44,497 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-15 14:46:44,497 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) [2022-03-15 14:46:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-15 14:46:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:44,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:44,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:44,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-15 14:46:44,498 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:44,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935454, now seen corresponding path program 237 times [2022-03-15 14:46:44,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:44,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495607765] [2022-03-15 14:46:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:44,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:44,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:44,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495607765] [2022-03-15 14:46:44,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495607765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:44,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:44,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:46:44,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208368988] [2022-03-15 14:46:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:44,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:46:44,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:46:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:46:44,836 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) [2022-03-15 14:46:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:46,559 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-03-15 14:46:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:46:46,559 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 [2022-03-15 14:46:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:46,560 INFO L225 Difference]: With dead ends: 1317 [2022-03-15 14:46:46,560 INFO L226 Difference]: Without dead ends: 1182 [2022-03-15 14:46:46,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=3491, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:46:46,561 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 334 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:46,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3371 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:46:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-03-15 14:46:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-03-15 14:46:46,570 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) [2022-03-15 14:46:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-15 14:46:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-15 14:46:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:46,571 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-15 14:46:46,571 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) [2022-03-15 14:46:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-15 14:46:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:46,572 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:46,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:46,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-15 14:46:46,573 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash -228087892, now seen corresponding path program 238 times [2022-03-15 14:46:46,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:46,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38700691] [2022-03-15 14:46:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:46,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:46,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38700691] [2022-03-15 14:46:46,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38700691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:46,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:46,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:46,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390954183] [2022-03-15 14:46:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:46,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:46,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:46,890 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) [2022-03-15 14:46:49,438 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 [] [2022-03-15 14:46:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:50,497 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-03-15 14:46:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:46:50,498 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 [2022-03-15 14:46:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:50,499 INFO L225 Difference]: With dead ends: 1305 [2022-03-15 14:46:50,499 INFO L226 Difference]: Without dead ends: 1131 [2022-03-15 14:46:50,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:46:50,500 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 [2022-03-15 14:46:50,500 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] [2022-03-15 14:46:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-03-15 14:46:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-03-15 14:46:50,508 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) [2022-03-15 14:46:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:46:50,509 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:46:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:50,509 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:46:50,509 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) [2022-03-15 14:46:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:46:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:50,510 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:50,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:50,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-15 14:46:50,510 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:50,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:50,511 INFO L85 PathProgramCache]: Analyzing trace with hash 213602126, now seen corresponding path program 239 times [2022-03-15 14:46:50,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:50,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288363578] [2022-03-15 14:46:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:50,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:50,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288363578] [2022-03-15 14:46:50,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288363578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:50,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:50,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:50,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940021052] [2022-03-15 14:46:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:50,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:50,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:50,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:50,829 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) [2022-03-15 14:46:54,659 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 [] [2022-03-15 14:46:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:55,090 INFO L93 Difference]: Finished difference Result 1418 states and 3475 transitions. [2022-03-15 14:46:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:46:55,090 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 [2022-03-15 14:46:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:55,092 INFO L225 Difference]: With dead ends: 1418 [2022-03-15 14:46:55,092 INFO L226 Difference]: Without dead ends: 1320 [2022-03-15 14:46:55,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=3149, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:46:55,092 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 342 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:55,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2937 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-15 14:46:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-03-15 14:46:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1075. [2022-03-15 14:46:55,101 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) [2022-03-15 14:46:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-15 14:46:55,102 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-15 14:46:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-15 14:46:55,102 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) [2022-03-15 14:46:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-15 14:46:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:46:55,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:55,103 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] [2022-03-15 14:46:55,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-15 14:46:55,103 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 927839404, now seen corresponding path program 240 times [2022-03-15 14:46:55,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:55,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410446176] [2022-03-15 14:46:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:55,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:55,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410446176] [2022-03-15 14:46:55,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410446176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:55,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:46:55,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:46:55,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852614690] [2022-03-15 14:46:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:46:55,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:46:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:46:55,422 INFO L87 Difference]: Start difference. First operand 1075 states and 2672 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) [2022-03-15 14:46:57,390 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 [] [2022-03-15 14:47:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:00,018 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-03-15 14:47:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:47:00,018 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 [2022-03-15 14:47:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:00,019 INFO L225 Difference]: With dead ends: 1323 [2022-03-15 14:47:00,019 INFO L226 Difference]: Without dead ends: 1172 [2022-03-15 14:47:00,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:47:00,020 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 351 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:00,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2904 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-15 14:47:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-03-15 14:47:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-03-15 14:47:00,028 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) [2022-03-15 14:47:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:47:00,029 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:47:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:00,029 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:47:00,030 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) [2022-03-15 14:47:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:47:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:00,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:00,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:00,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-15 14:47:00,031 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1908233138, now seen corresponding path program 241 times [2022-03-15 14:47:00,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:00,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968877175] [2022-03-15 14:47:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:00,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:00,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968877175] [2022-03-15 14:47:00,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968877175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:00,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:00,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:00,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777300087] [2022-03-15 14:47:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:00,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:00,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:00,330 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) [2022-03-15 14:47:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:01,446 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-03-15 14:47:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:47:01,446 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 [2022-03-15 14:47:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:01,448 INFO L225 Difference]: With dead ends: 1283 [2022-03-15 14:47:01,448 INFO L226 Difference]: Without dead ends: 1079 [2022-03-15 14:47:01,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:47:01,449 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 287 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:01,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2792 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-15 14:47:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-03-15 14:47:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.483430799220273) internal successors, (2548), 1026 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2548 transitions. [2022-03-15 14:47:01,459 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2548 transitions. Word has length 79 [2022-03-15 14:47:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:01,459 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2548 transitions. [2022-03-15 14:47:01,459 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) [2022-03-15 14:47:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2548 transitions. [2022-03-15 14:47:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:01,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:01,460 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] [2022-03-15 14:47:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-15 14:47:01,460 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1047026280, now seen corresponding path program 242 times [2022-03-15 14:47:01,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:01,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887962648] [2022-03-15 14:47:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:01,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:01,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887962648] [2022-03-15 14:47:01,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887962648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:01,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:01,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:01,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122028415] [2022-03-15 14:47:01,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:01,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:01,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:01,772 INFO L87 Difference]: Start difference. First operand 1027 states and 2548 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:02,756 INFO L93 Difference]: Finished difference Result 1249 states and 3092 transitions. [2022-03-15 14:47:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:47:02,756 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 [2022-03-15 14:47:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:02,758 INFO L225 Difference]: With dead ends: 1249 [2022-03-15 14:47:02,758 INFO L226 Difference]: Without dead ends: 1135 [2022-03-15 14:47:02,758 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 [2022-03-15 14:47:02,758 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 266 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:02,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2399 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-03-15 14:47:02,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1063. [2022-03-15 14:47:02,767 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) [2022-03-15 14:47:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-03-15 14:47:02,768 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-03-15 14:47:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:02,768 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-03-15 14:47:02,769 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) [2022-03-15 14:47:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-03-15 14:47:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:02,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:02,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:02,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-15 14:47:02,770 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash 680131850, now seen corresponding path program 243 times [2022-03-15 14:47:02,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:02,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739066691] [2022-03-15 14:47:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:03,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:03,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739066691] [2022-03-15 14:47:03,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739066691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:03,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:03,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:03,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260975102] [2022-03-15 14:47:03,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:03,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:03,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:03,081 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) [2022-03-15 14:47:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:04,113 INFO L93 Difference]: Finished difference Result 1260 states and 3116 transitions. [2022-03-15 14:47:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:47:04,113 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 [2022-03-15 14:47:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:04,115 INFO L225 Difference]: With dead ends: 1260 [2022-03-15 14:47:04,115 INFO L226 Difference]: Without dead ends: 1162 [2022-03-15 14:47:04,115 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 [2022-03-15 14:47:04,115 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 292 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:04,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2354 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-03-15 14:47:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1067. [2022-03-15 14:47:04,124 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) [2022-03-15 14:47:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-03-15 14:47:04,125 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-03-15 14:47:04,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:04,125 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-03-15 14:47:04,126 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) [2022-03-15 14:47:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-03-15 14:47:04,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:04,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:04,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:04,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-15 14:47:04,127 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1394369128, now seen corresponding path program 244 times [2022-03-15 14:47:04,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:04,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857959541] [2022-03-15 14:47:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:04,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:04,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857959541] [2022-03-15 14:47:04,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857959541] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:04,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:04,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:04,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079183992] [2022-03-15 14:47:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:04,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:04,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:04,431 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) [2022-03-15 14:47:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:05,455 INFO L93 Difference]: Finished difference Result 1228 states and 3032 transitions. [2022-03-15 14:47:05,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:47:05,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:47:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:05,457 INFO L225 Difference]: With dead ends: 1228 [2022-03-15 14:47:05,457 INFO L226 Difference]: Without dead ends: 1119 [2022-03-15 14:47:05,457 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 [2022-03-15 14:47:05,457 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 272 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:05,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2393 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-15 14:47:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1059. [2022-03-15 14:47:05,465 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) [2022-03-15 14:47:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:47:05,466 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:47:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:05,466 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:47:05,466 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) [2022-03-15 14:47:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:47:05,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:05,467 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:05,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:05,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-15 14:47:05,467 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1865059942, now seen corresponding path program 245 times [2022-03-15 14:47:05,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:05,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113520157] [2022-03-15 14:47:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:05,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:05,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113520157] [2022-03-15 14:47:05,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113520157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:05,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:05,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:05,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802807950] [2022-03-15 14:47:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:05,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:05,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:05,766 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) [2022-03-15 14:47:08,750 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 [] [2022-03-15 14:47:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:08,942 INFO L93 Difference]: Finished difference Result 1362 states and 3338 transitions. [2022-03-15 14:47:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:47:08,942 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:47:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:08,944 INFO L225 Difference]: With dead ends: 1362 [2022-03-15 14:47:08,944 INFO L226 Difference]: Without dead ends: 1264 [2022-03-15 14:47:08,944 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 [2022-03-15 14:47:08,944 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 330 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:08,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2428 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 14:47:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-03-15 14:47:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1071. [2022-03-15 14:47:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.486915887850467) internal successors, (2661), 1070 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2661 transitions. [2022-03-15 14:47:08,954 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2661 transitions. Word has length 79 [2022-03-15 14:47:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:08,954 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2661 transitions. [2022-03-15 14:47:08,954 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) [2022-03-15 14:47:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2661 transitions. [2022-03-15 14:47:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:08,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:08,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:08,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-03-15 14:47:08,956 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1715670076, now seen corresponding path program 246 times [2022-03-15 14:47:08,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:08,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935765080] [2022-03-15 14:47:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:09,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:09,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935765080] [2022-03-15 14:47:09,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935765080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:09,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:09,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:09,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835373530] [2022-03-15 14:47:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:09,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:09,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:09,263 INFO L87 Difference]: Start difference. First operand 1071 states and 2661 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) [2022-03-15 14:47:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:10,310 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-03-15 14:47:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:47:10,311 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 [2022-03-15 14:47:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:10,312 INFO L225 Difference]: With dead ends: 1266 [2022-03-15 14:47:10,312 INFO L226 Difference]: Without dead ends: 1107 [2022-03-15 14:47:10,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2228, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:47:10,313 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 299 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:10,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2401 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-15 14:47:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-03-15 14:47:10,321 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) [2022-03-15 14:47:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:47:10,322 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:47:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:10,322 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:47:10,322 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) [2022-03-15 14:47:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:47:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:10,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:10,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:10,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-15 14:47:10,323 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1596023484, now seen corresponding path program 247 times [2022-03-15 14:47:10,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:10,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975910907] [2022-03-15 14:47:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:10,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:10,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975910907] [2022-03-15 14:47:10,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975910907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:10,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:10,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:10,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925552557] [2022-03-15 14:47:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:10,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:10,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:10,643 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) [2022-03-15 14:47:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:12,922 INFO L93 Difference]: Finished difference Result 1325 states and 3276 transitions. [2022-03-15 14:47:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:47:12,922 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 [2022-03-15 14:47:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:12,924 INFO L225 Difference]: With dead ends: 1325 [2022-03-15 14:47:12,924 INFO L226 Difference]: Without dead ends: 1227 [2022-03-15 14:47:12,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=2828, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:47:12,925 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 313 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:12,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2819 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 14:47:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-15 14:47:12,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1079. [2022-03-15 14:47:12,934 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) [2022-03-15 14:47:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-03-15 14:47:12,935 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-03-15 14:47:12,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:12,935 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-03-15 14:47:12,935 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) [2022-03-15 14:47:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-03-15 14:47:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:12,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:12,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:12,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-15 14:47:12,936 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1945114112, now seen corresponding path program 248 times [2022-03-15 14:47:12,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:12,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150809698] [2022-03-15 14:47:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:13,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:13,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150809698] [2022-03-15 14:47:13,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150809698] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:13,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:13,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:13,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270743548] [2022-03-15 14:47:13,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:13,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:13,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:13,254 INFO L87 Difference]: Start difference. First operand 1079 states and 2679 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:14,521 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-03-15 14:47:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:47:14,521 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 [2022-03-15 14:47:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:14,523 INFO L225 Difference]: With dead ends: 1281 [2022-03-15 14:47:14,523 INFO L226 Difference]: Without dead ends: 1146 [2022-03-15 14:47:14,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:47:14,523 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 297 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:14,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2931 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-03-15 14:47:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1055. [2022-03-15 14:47:14,532 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) [2022-03-15 14:47:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-03-15 14:47:14,533 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-03-15 14:47:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:14,534 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-03-15 14:47:14,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-03-15 14:47:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:14,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:14,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:14,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-15 14:47:14,535 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1410005622, now seen corresponding path program 249 times [2022-03-15 14:47:14,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:14,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282086767] [2022-03-15 14:47:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:14,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:14,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282086767] [2022-03-15 14:47:14,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282086767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:14,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:14,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:14,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188517073] [2022-03-15 14:47:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:14,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:14,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:14,842 INFO L87 Difference]: Start difference. First operand 1055 states and 2617 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:15,899 INFO L93 Difference]: Finished difference Result 1269 states and 3126 transitions. [2022-03-15 14:47:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:47:15,899 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 [2022-03-15 14:47:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:15,900 INFO L225 Difference]: With dead ends: 1269 [2022-03-15 14:47:15,900 INFO L226 Difference]: Without dead ends: 1103 [2022-03-15 14:47:15,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:47:15,901 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 290 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2722 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-03-15 14:47:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-03-15 14:47:15,909 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) [2022-03-15 14:47:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2599 transitions. [2022-03-15 14:47:15,910 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2599 transitions. Word has length 79 [2022-03-15 14:47:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:15,910 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2599 transitions. [2022-03-15 14:47:15,910 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) [2022-03-15 14:47:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2599 transitions. [2022-03-15 14:47:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:15,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:15,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:15,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-15 14:47:15,911 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1052342094, now seen corresponding path program 250 times [2022-03-15 14:47:15,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:15,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135415494] [2022-03-15 14:47:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:16,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:16,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135415494] [2022-03-15 14:47:16,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135415494] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:16,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:16,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:16,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421354829] [2022-03-15 14:47:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:16,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:16,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:16,231 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) [2022-03-15 14:47:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:18,318 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-03-15 14:47:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:47:18,318 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 [2022-03-15 14:47:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:18,319 INFO L225 Difference]: With dead ends: 1327 [2022-03-15 14:47:18,319 INFO L226 Difference]: Without dead ends: 1229 [2022-03-15 14:47:18,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:47:18,320 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 304 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:18,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2877 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:47:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-03-15 14:47:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1095. [2022-03-15 14:47:18,328 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) [2022-03-15 14:47:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-03-15 14:47:18,330 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-03-15 14:47:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:18,330 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-03-15 14:47:18,330 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) [2022-03-15 14:47:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-03-15 14:47:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:18,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:18,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:18,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-15 14:47:18,331 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash 298512394, now seen corresponding path program 251 times [2022-03-15 14:47:18,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:18,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652373716] [2022-03-15 14:47:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:18,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:18,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652373716] [2022-03-15 14:47:18,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652373716] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:18,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:18,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:18,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426322086] [2022-03-15 14:47:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:18,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:18,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:18,645 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) [2022-03-15 14:47:19,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:19,875 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-03-15 14:47:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:47:19,875 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 [2022-03-15 14:47:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:19,877 INFO L225 Difference]: With dead ends: 1295 [2022-03-15 14:47:19,877 INFO L226 Difference]: Without dead ends: 1160 [2022-03-15 14:47:19,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:47:19,877 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 319 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:19,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2699 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-15 14:47:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1071. [2022-03-15 14:47:19,886 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) [2022-03-15 14:47:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-03-15 14:47:19,896 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-03-15 14:47:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:19,896 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-03-15 14:47:19,896 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) [2022-03-15 14:47:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-03-15 14:47:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:19,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:19,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:19,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-15 14:47:19,898 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1069493170, now seen corresponding path program 252 times [2022-03-15 14:47:19,898 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:19,898 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241700351] [2022-03-15 14:47:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:20,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:20,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241700351] [2022-03-15 14:47:20,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241700351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:20,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:20,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:20,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253498175] [2022-03-15 14:47:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:20,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:20,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:20,198 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) [2022-03-15 14:47:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:21,229 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-03-15 14:47:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:47:21,229 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 [2022-03-15 14:47:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:21,230 INFO L225 Difference]: With dead ends: 1271 [2022-03-15 14:47:21,230 INFO L226 Difference]: Without dead ends: 1083 [2022-03-15 14:47:21,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:47:21,231 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 302 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:21,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2769 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-15 14:47:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-15 14:47:21,239 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) [2022-03-15 14:47:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-03-15 14:47:21,240 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-03-15 14:47:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:21,240 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-03-15 14:47:21,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-03-15 14:47:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:21,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:21,241 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] [2022-03-15 14:47:21,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-15 14:47:21,242 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash 390336240, now seen corresponding path program 253 times [2022-03-15 14:47:21,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:21,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012845184] [2022-03-15 14:47:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:21,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:21,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:21,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012845184] [2022-03-15 14:47:21,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012845184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:21,579 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:21,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:47:21,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713425875] [2022-03-15 14:47:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:21,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:47:21,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:47:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:47:21,580 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) [2022-03-15 14:47:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:23,876 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-03-15 14:47:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:47:23,876 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 [2022-03-15 14:47:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:23,878 INFO L225 Difference]: With dead ends: 1367 [2022-03-15 14:47:23,878 INFO L226 Difference]: Without dead ends: 1269 [2022-03-15 14:47:23,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:47:23,878 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 356 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:23,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 3194 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 14:47:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-03-15 14:47:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1091. [2022-03-15 14:47:23,888 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) [2022-03-15 14:47:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-03-15 14:47:23,889 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-03-15 14:47:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:23,889 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-03-15 14:47:23,889 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) [2022-03-15 14:47:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-03-15 14:47:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:23,890 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:23,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:23,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-15 14:47:23,890 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -363493460, now seen corresponding path program 254 times [2022-03-15 14:47:23,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:23,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566203550] [2022-03-15 14:47:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:24,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:24,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566203550] [2022-03-15 14:47:24,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566203550] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:24,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:24,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:47:24,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250077548] [2022-03-15 14:47:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:24,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:47:24,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:47:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:47:24,236 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) [2022-03-15 14:47:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:26,675 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-03-15 14:47:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:47:26,675 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 [2022-03-15 14:47:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:26,677 INFO L225 Difference]: With dead ends: 1323 [2022-03-15 14:47:26,677 INFO L226 Difference]: Without dead ends: 1188 [2022-03-15 14:47:26,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=3385, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:47:26,678 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 359 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:26,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2891 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:47:26,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-03-15 14:47:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1067. [2022-03-15 14:47:26,686 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) [2022-03-15 14:47:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-03-15 14:47:26,687 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-03-15 14:47:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:26,688 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-03-15 14:47:26,688 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) [2022-03-15 14:47:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-03-15 14:47:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:26,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:26,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:26,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-03-15 14:47:26,689 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:26,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1731499024, now seen corresponding path program 255 times [2022-03-15 14:47:26,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:26,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644400224] [2022-03-15 14:47:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:27,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:27,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644400224] [2022-03-15 14:47:27,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644400224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:27,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:27,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:27,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152742492] [2022-03-15 14:47:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:27,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:27,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:27,005 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) [2022-03-15 14:47:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:28,189 INFO L93 Difference]: Finished difference Result 1287 states and 3163 transitions. [2022-03-15 14:47:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:47:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:47:28,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:28,191 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:47:28,191 INFO L226 Difference]: Without dead ends: 1107 [2022-03-15 14:47:28,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=2634, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:47:28,191 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 302 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:28,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2943 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-15 14:47:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1043. [2022-03-15 14:47:28,199 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) [2022-03-15 14:47:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2584 transitions. [2022-03-15 14:47:28,200 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2584 transitions. Word has length 79 [2022-03-15 14:47:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:28,200 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2584 transitions. [2022-03-15 14:47:28,200 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) [2022-03-15 14:47:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2584 transitions. [2022-03-15 14:47:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:28,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:28,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:28,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-03-15 14:47:28,202 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1970611608, now seen corresponding path program 256 times [2022-03-15 14:47:28,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:28,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798527468] [2022-03-15 14:47:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:28,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:28,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798527468] [2022-03-15 14:47:28,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798527468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:28,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:28,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:28,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427986369] [2022-03-15 14:47:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:28,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:28,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:28,609 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) [2022-03-15 14:47:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:29,606 INFO L93 Difference]: Finished difference Result 1302 states and 3198 transitions. [2022-03-15 14:47:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:47:29,606 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 [2022-03-15 14:47:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:29,608 INFO L225 Difference]: With dead ends: 1302 [2022-03-15 14:47:29,608 INFO L226 Difference]: Without dead ends: 1071 [2022-03-15 14:47:29,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:47:29,608 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 304 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:29,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2745 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-15 14:47:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1027. [2022-03-15 14:47:29,619 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) [2022-03-15 14:47:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-15 14:47:29,620 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-15 14:47:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:29,621 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-15 14:47:29,621 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) [2022-03-15 14:47:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-15 14:47:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:29,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:29,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:29,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-03-15 14:47:29,623 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 628500514, now seen corresponding path program 257 times [2022-03-15 14:47:29,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:29,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687085930] [2022-03-15 14:47:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:29,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:29,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687085930] [2022-03-15 14:47:29,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687085930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:29,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:29,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:29,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046940640] [2022-03-15 14:47:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:29,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:29,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:29,951 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) [2022-03-15 14:47:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:31,458 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-03-15 14:47:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:47:31,458 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 [2022-03-15 14:47:31,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:31,460 INFO L225 Difference]: With dead ends: 1343 [2022-03-15 14:47:31,460 INFO L226 Difference]: Without dead ends: 1245 [2022-03-15 14:47:31,460 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 [2022-03-15 14:47:31,460 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 307 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:31,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2931 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:47:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-03-15 14:47:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-03-15 14:47:31,469 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) [2022-03-15 14:47:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:47:31,470 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:47:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:31,471 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:47:31,471 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) [2022-03-15 14:47:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:47:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:31,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:31,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:31,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-15 14:47:31,472 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash -125329186, now seen corresponding path program 258 times [2022-03-15 14:47:31,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:31,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293869125] [2022-03-15 14:47:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:31,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:31,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293869125] [2022-03-15 14:47:31,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293869125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:31,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:31,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:31,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020149298] [2022-03-15 14:47:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:31,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:31,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:31,823 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) [2022-03-15 14:47:33,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:33,239 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-15 14:47:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:47:33,239 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 [2022-03-15 14:47:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:33,240 INFO L225 Difference]: With dead ends: 1299 [2022-03-15 14:47:33,240 INFO L226 Difference]: Without dead ends: 1164 [2022-03-15 14:47:33,241 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 [2022-03-15 14:47:33,241 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 341 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:33,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2651 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:47:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-15 14:47:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-03-15 14:47:33,249 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) [2022-03-15 14:47:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-15 14:47:33,250 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-15 14:47:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:33,250 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-15 14:47:33,250 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) [2022-03-15 14:47:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-15 14:47:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:33,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:33,251 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] [2022-03-15 14:47:33,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-15 14:47:33,251 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334750, now seen corresponding path program 259 times [2022-03-15 14:47:33,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:33,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853889865] [2022-03-15 14:47:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:33,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:33,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853889865] [2022-03-15 14:47:33,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853889865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:33,554 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:33,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:33,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710135438] [2022-03-15 14:47:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:33,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:33,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:33,555 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) [2022-03-15 14:47:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:34,767 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-03-15 14:47:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 14:47:34,768 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 [2022-03-15 14:47:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:34,769 INFO L225 Difference]: With dead ends: 1263 [2022-03-15 14:47:34,769 INFO L226 Difference]: Without dead ends: 1083 [2022-03-15 14:47:34,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:47:34,770 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 284 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:34,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2843 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:47:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-15 14:47:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-15 14:47:34,778 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) [2022-03-15 14:47:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-15 14:47:34,779 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-15 14:47:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:34,779 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-15 14:47:34,779 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) [2022-03-15 14:47:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-15 14:47:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:34,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:34,780 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] [2022-03-15 14:47:34,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-15 14:47:34,780 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1732447334, now seen corresponding path program 260 times [2022-03-15 14:47:34,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:34,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607751805] [2022-03-15 14:47:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:35,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:35,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607751805] [2022-03-15 14:47:35,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607751805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:35,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:35,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:35,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878927402] [2022-03-15 14:47:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:35,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:35,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:35,089 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) [2022-03-15 14:47:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:35,941 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-15 14:47:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:47:35,942 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 [2022-03-15 14:47:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:35,943 INFO L225 Difference]: With dead ends: 1286 [2022-03-15 14:47:35,943 INFO L226 Difference]: Without dead ends: 1067 [2022-03-15 14:47:35,944 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 [2022-03-15 14:47:35,944 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 295 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2445 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-15 14:47:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-15 14:47:35,951 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) [2022-03-15 14:47:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-15 14:47:35,952 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-15 14:47:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:35,953 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-15 14:47:35,953 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) [2022-03-15 14:47:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-15 14:47:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:35,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:35,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:35,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-15 14:47:35,954 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 222619564, now seen corresponding path program 261 times [2022-03-15 14:47:35,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:35,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344077608] [2022-03-15 14:47:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:36,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:36,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344077608] [2022-03-15 14:47:36,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344077608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:36,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:36,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:36,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333186525] [2022-03-15 14:47:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:36,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:36,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:36,250 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) [2022-03-15 14:47:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:37,133 INFO L93 Difference]: Finished difference Result 1312 states and 3213 transitions. [2022-03-15 14:47:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:47:37,133 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 [2022-03-15 14:47:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:37,134 INFO L225 Difference]: With dead ends: 1312 [2022-03-15 14:47:37,134 INFO L226 Difference]: Without dead ends: 1027 [2022-03-15 14:47:37,135 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 [2022-03-15 14:47:37,135 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 293 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:37,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2678 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-15 14:47:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2022-03-15 14:47:37,142 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) [2022-03-15 14:47:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2486 transitions. [2022-03-15 14:47:37,143 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2486 transitions. Word has length 79 [2022-03-15 14:47:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:37,144 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 2486 transitions. [2022-03-15 14:47:37,144 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) [2022-03-15 14:47:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2486 transitions. [2022-03-15 14:47:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:37,145 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:37,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:37,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-15 14:47:37,145 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1503419360, now seen corresponding path program 262 times [2022-03-15 14:47:37,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:37,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406417873] [2022-03-15 14:47:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:37,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:37,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406417873] [2022-03-15 14:47:37,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406417873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:37,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:37,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:37,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808371954] [2022-03-15 14:47:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:37,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:37,450 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) [2022-03-15 14:47:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:38,236 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-03-15 14:47:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:47:38,237 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 [2022-03-15 14:47:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:38,238 INFO L225 Difference]: With dead ends: 1269 [2022-03-15 14:47:38,238 INFO L226 Difference]: Without dead ends: 1139 [2022-03-15 14:47:38,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:47:38,239 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 261 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:38,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2351 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-03-15 14:47:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-03-15 14:47:38,247 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) [2022-03-15 14:47:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-03-15 14:47:38,248 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-03-15 14:47:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:38,248 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-03-15 14:47:38,248 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) [2022-03-15 14:47:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-03-15 14:47:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:38,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:38,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:38,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-15 14:47:38,249 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 650028194, now seen corresponding path program 263 times [2022-03-15 14:47:38,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:38,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733556868] [2022-03-15 14:47:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:38,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:38,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733556868] [2022-03-15 14:47:38,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733556868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:38,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:38,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:38,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155168669] [2022-03-15 14:47:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:38,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:38,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:38,544 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) [2022-03-15 14:47:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:39,368 INFO L93 Difference]: Finished difference Result 1264 states and 3127 transitions. [2022-03-15 14:47:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:47:39,368 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 [2022-03-15 14:47:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:39,370 INFO L225 Difference]: With dead ends: 1264 [2022-03-15 14:47:39,370 INFO L226 Difference]: Without dead ends: 1166 [2022-03-15 14:47:39,370 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 [2022-03-15 14:47:39,370 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:39,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2293 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-15 14:47:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1087. [2022-03-15 14:47:39,378 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) [2022-03-15 14:47:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-03-15 14:47:39,380 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-03-15 14:47:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:39,380 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-03-15 14:47:39,380 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) [2022-03-15 14:47:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-03-15 14:47:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:39,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:39,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:39,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-15 14:47:39,381 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1364265472, now seen corresponding path program 264 times [2022-03-15 14:47:39,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:39,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996086035] [2022-03-15 14:47:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:39,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:39,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996086035] [2022-03-15 14:47:39,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996086035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:39,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:39,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:39,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877876890] [2022-03-15 14:47:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:39,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:39,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:39,757 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) [2022-03-15 14:47:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:40,636 INFO L93 Difference]: Finished difference Result 1232 states and 3043 transitions. [2022-03-15 14:47:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:47:40,636 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 [2022-03-15 14:47:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:40,638 INFO L225 Difference]: With dead ends: 1232 [2022-03-15 14:47:40,638 INFO L226 Difference]: Without dead ends: 1119 [2022-03-15 14:47:40,638 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 [2022-03-15 14:47:40,638 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 262 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:40,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2111 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-03-15 14:47:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1075. [2022-03-15 14:47:40,647 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) [2022-03-15 14:47:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-03-15 14:47:40,648 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-03-15 14:47:40,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:40,648 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-03-15 14:47:40,648 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) [2022-03-15 14:47:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-03-15 14:47:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:40,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:40,649 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] [2022-03-15 14:47:40,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-15 14:47:40,649 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1923224064, now seen corresponding path program 265 times [2022-03-15 14:47:40,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:40,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781081260] [2022-03-15 14:47:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:40,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:40,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781081260] [2022-03-15 14:47:40,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781081260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:40,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:40,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:40,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499041976] [2022-03-15 14:47:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:40,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:40,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:40,943 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) [2022-03-15 14:47:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:42,002 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-03-15 14:47:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:47:42,003 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 [2022-03-15 14:47:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:42,004 INFO L225 Difference]: With dead ends: 1282 [2022-03-15 14:47:42,004 INFO L226 Difference]: Without dead ends: 1184 [2022-03-15 14:47:42,004 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 [2022-03-15 14:47:42,004 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 237 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:42,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2452 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:47:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-03-15 14:47:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1099. [2022-03-15 14:47:42,019 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) [2022-03-15 14:47:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-03-15 14:47:42,020 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-03-15 14:47:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:42,020 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-03-15 14:47:42,020 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) [2022-03-15 14:47:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-03-15 14:47:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:42,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:42,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:42,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-03-15 14:47:42,022 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1169394364, now seen corresponding path program 266 times [2022-03-15 14:47:42,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:42,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286395477] [2022-03-15 14:47:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:42,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:42,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286395477] [2022-03-15 14:47:42,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286395477] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:42,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:42,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:42,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171308140] [2022-03-15 14:47:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:42,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:42,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:42,314 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) [2022-03-15 14:47:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:43,184 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-03-15 14:47:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:47:43,184 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 [2022-03-15 14:47:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:43,186 INFO L225 Difference]: With dead ends: 1250 [2022-03-15 14:47:43,186 INFO L226 Difference]: Without dead ends: 1099 [2022-03-15 14:47:43,186 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 [2022-03-15 14:47:43,186 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 [2022-03-15 14:47:43,186 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] [2022-03-15 14:47:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-03-15 14:47:43,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1059. [2022-03-15 14:47:43,195 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) [2022-03-15 14:47:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-03-15 14:47:43,197 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-03-15 14:47:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-03-15 14:47:43,197 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) [2022-03-15 14:47:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-03-15 14:47:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:43,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:43,198 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] [2022-03-15 14:47:43,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-15 14:47:43,198 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash -201119232, now seen corresponding path program 267 times [2022-03-15 14:47:43,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:43,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074582073] [2022-03-15 14:47:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:43,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:43,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074582073] [2022-03-15 14:47:43,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074582073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:43,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:43,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:43,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876728538] [2022-03-15 14:47:43,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:43,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:43,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:43,509 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) [2022-03-15 14:47:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:44,568 INFO L93 Difference]: Finished difference Result 1317 states and 3254 transitions. [2022-03-15 14:47:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:47:44,568 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 [2022-03-15 14:47:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:44,570 INFO L225 Difference]: With dead ends: 1317 [2022-03-15 14:47:44,570 INFO L226 Difference]: Without dead ends: 1219 [2022-03-15 14:47:44,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:47:44,570 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 282 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:44,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2595 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-03-15 14:47:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1087. [2022-03-15 14:47:44,579 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) [2022-03-15 14:47:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-03-15 14:47:44,580 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-03-15 14:47:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-03-15 14:47:44,581 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) [2022-03-15 14:47:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-03-15 14:47:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:44,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:44,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:44,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-15 14:47:44,582 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -954948932, now seen corresponding path program 268 times [2022-03-15 14:47:44,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:44,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666828243] [2022-03-15 14:47:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:44,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:44,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666828243] [2022-03-15 14:47:44,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666828243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:44,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:44,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:44,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471404648] [2022-03-15 14:47:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:44,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:44,885 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) [2022-03-15 14:47:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:45,937 INFO L93 Difference]: Finished difference Result 1273 states and 3137 transitions. [2022-03-15 14:47:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:47:45,937 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 [2022-03-15 14:47:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:45,938 INFO L225 Difference]: With dead ends: 1273 [2022-03-15 14:47:45,938 INFO L226 Difference]: Without dead ends: 1138 [2022-03-15 14:47:45,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:47:45,939 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 301 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:45,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2586 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-03-15 14:47:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1063. [2022-03-15 14:47:45,947 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) [2022-03-15 14:47:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:47:45,948 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:47:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:45,948 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:47:45,948 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) [2022-03-15 14:47:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:47:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:45,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:45,949 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] [2022-03-15 14:47:45,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-15 14:47:45,950 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash -15101370, now seen corresponding path program 269 times [2022-03-15 14:47:45,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:45,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413513409] [2022-03-15 14:47:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:45,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:46,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:46,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413513409] [2022-03-15 14:47:46,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413513409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:46,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:46,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:46,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079000057] [2022-03-15 14:47:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:46,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:46,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:46,247 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) [2022-03-15 14:47:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:47,117 INFO L93 Difference]: Finished difference Result 1261 states and 3104 transitions. [2022-03-15 14:47:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:47:47,117 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 [2022-03-15 14:47:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:47,118 INFO L225 Difference]: With dead ends: 1261 [2022-03-15 14:47:47,118 INFO L226 Difference]: Without dead ends: 1091 [2022-03-15 14:47:47,119 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 [2022-03-15 14:47:47,119 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 259 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:47,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2636 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-03-15 14:47:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-03-15 14:47:47,126 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) [2022-03-15 14:47:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-03-15 14:47:47,136 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-03-15 14:47:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:47,137 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-03-15 14:47:47,137 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) [2022-03-15 14:47:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-03-15 14:47:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:47,138 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:47,138 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] [2022-03-15 14:47:47,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-15 14:47:47,138 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash -136416094, now seen corresponding path program 270 times [2022-03-15 14:47:47,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:47,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011295212] [2022-03-15 14:47:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:47,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:47,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:47,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011295212] [2022-03-15 14:47:47,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011295212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:47,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:47,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:47,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811364698] [2022-03-15 14:47:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:47,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:47,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:47,447 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) [2022-03-15 14:47:50,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:47:52,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:47:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:52,277 INFO L93 Difference]: Finished difference Result 1394 states and 3409 transitions. [2022-03-15 14:47:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:47:52,277 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 [2022-03-15 14:47:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:52,279 INFO L225 Difference]: With dead ends: 1394 [2022-03-15 14:47:52,279 INFO L226 Difference]: Without dead ends: 1296 [2022-03-15 14:47:52,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=2326, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 14:47:52,280 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 296 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:52,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2646 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 997 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-15 14:47:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-03-15 14:47:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1075. [2022-03-15 14:47:52,288 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) [2022-03-15 14:47:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-03-15 14:47:52,289 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-03-15 14:47:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:52,290 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-03-15 14:47:52,290 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) [2022-03-15 14:47:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-03-15 14:47:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:52,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:52,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:52,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-15 14:47:52,291 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 577821184, now seen corresponding path program 271 times [2022-03-15 14:47:52,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:52,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945452125] [2022-03-15 14:47:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:52,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:52,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945452125] [2022-03-15 14:47:52,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945452125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:52,601 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:52,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:47:52,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361674380] [2022-03-15 14:47:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:52,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:47:52,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:47:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:47:52,602 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) [2022-03-15 14:47:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:53,767 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-03-15 14:47:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:47:53,768 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 [2022-03-15 14:47:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:53,769 INFO L225 Difference]: With dead ends: 1299 [2022-03-15 14:47:53,769 INFO L226 Difference]: Without dead ends: 1148 [2022-03-15 14:47:53,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:47:53,770 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 290 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:53,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2616 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:47:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-15 14:47:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1075. [2022-03-15 14:47:53,778 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) [2022-03-15 14:47:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:47:53,779 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:47:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:53,779 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:47:53,779 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) [2022-03-15 14:47:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:47:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:53,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:53,780 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] [2022-03-15 14:47:53,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-03-15 14:47:53,780 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2036715938, now seen corresponding path program 272 times [2022-03-15 14:47:53,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:53,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205925737] [2022-03-15 14:47:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:54,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:54,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205925737] [2022-03-15 14:47:54,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205925737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:54,076 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:54,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:47:54,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383130209] [2022-03-15 14:47:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:54,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:47:54,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:47:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:47:54,077 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) [2022-03-15 14:47:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:54,914 INFO L93 Difference]: Finished difference Result 1259 states and 3086 transitions. [2022-03-15 14:47:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:47:54,914 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 [2022-03-15 14:47:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:54,915 INFO L225 Difference]: With dead ends: 1259 [2022-03-15 14:47:54,915 INFO L226 Difference]: Without dead ends: 1063 [2022-03-15 14:47:54,915 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 [2022-03-15 14:47:54,916 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 270 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:54,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2254 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-03-15 14:47:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1035. [2022-03-15 14:47:54,923 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) [2022-03-15 14:47:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-03-15 14:47:54,925 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-03-15 14:47:54,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:54,925 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-03-15 14:47:54,925 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) [2022-03-15 14:47:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-03-15 14:47:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:54,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:54,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:54,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-15 14:47:54,926 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:54,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash -111819614, now seen corresponding path program 273 times [2022-03-15 14:47:54,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:54,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899334058] [2022-03-15 14:47:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:55,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:55,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899334058] [2022-03-15 14:47:55,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899334058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:55,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:55,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:55,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340756212] [2022-03-15 14:47:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:55,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:55,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:55,244 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) [2022-03-15 14:47:58,567 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 [] [2022-03-15 14:47:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:58,768 INFO L93 Difference]: Finished difference Result 1427 states and 3494 transitions. [2022-03-15 14:47:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:47:58,769 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 [2022-03-15 14:47:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:58,770 INFO L225 Difference]: With dead ends: 1427 [2022-03-15 14:47:58,770 INFO L226 Difference]: Without dead ends: 1329 [2022-03-15 14:47:58,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=3039, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:47:58,770 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 356 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:58,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2805 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1053 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 14:47:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-03-15 14:47:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1063. [2022-03-15 14:47:58,779 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) [2022-03-15 14:47:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:47:58,780 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:47:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:58,780 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:47:58,780 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) [2022-03-15 14:47:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:47:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:47:58,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:58,781 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] [2022-03-15 14:47:58,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-03-15 14:47:58,781 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash 602417664, now seen corresponding path program 274 times [2022-03-15 14:47:58,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:58,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768734499] [2022-03-15 14:47:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:58,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:59,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:59,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768734499] [2022-03-15 14:47:59,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768734499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:47:59,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:47:59,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:47:59,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432508217] [2022-03-15 14:47:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:47:59,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:47:59,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:47:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:47:59,098 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 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) [2022-03-15 14:48:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:00,377 INFO L93 Difference]: Finished difference Result 1319 states and 3251 transitions. [2022-03-15 14:48:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:48:00,378 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 [2022-03-15 14:48:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:00,379 INFO L225 Difference]: With dead ends: 1319 [2022-03-15 14:48:00,379 INFO L226 Difference]: Without dead ends: 1168 [2022-03-15 14:48:00,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:48:00,380 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 328 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:00,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2772 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:48:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-15 14:48:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-03-15 14:48:00,396 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) [2022-03-15 14:48:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-15 14:48:00,397 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-15 14:48:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:00,397 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-15 14:48:00,397 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) [2022-03-15 14:48:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-15 14:48:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:00,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:00,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:00,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-15 14:48:00,399 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2061312418, now seen corresponding path program 275 times [2022-03-15 14:48:00,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:00,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668266885] [2022-03-15 14:48:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:00,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:00,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668266885] [2022-03-15 14:48:00,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668266885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:00,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:00,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:00,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523072753] [2022-03-15 14:48:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:00,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:00,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:00,704 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) [2022-03-15 14:48:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:01,719 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-03-15 14:48:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:48:01,720 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 [2022-03-15 14:48:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:01,721 INFO L225 Difference]: With dead ends: 1267 [2022-03-15 14:48:01,721 INFO L226 Difference]: Without dead ends: 1087 [2022-03-15 14:48:01,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:48:01,722 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:01,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2831 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:48:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-03-15 14:48:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-03-15 14:48:01,730 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) [2022-03-15 14:48:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-15 14:48:01,731 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-15 14:48:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-15 14:48:01,731 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) [2022-03-15 14:48:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-15 14:48:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:01,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:01,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:01,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-03-15 14:48:01,732 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1822199834, now seen corresponding path program 276 times [2022-03-15 14:48:01,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:01,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423356443] [2022-03-15 14:48:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:02,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:02,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423356443] [2022-03-15 14:48:02,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423356443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:02,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:02,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:48:02,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977855693] [2022-03-15 14:48:02,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:02,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:48:02,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:48:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:48:02,037 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) [2022-03-15 14:48:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:02,834 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-03-15 14:48:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:48:02,834 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 [2022-03-15 14:48:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:02,836 INFO L225 Difference]: With dead ends: 1282 [2022-03-15 14:48:02,836 INFO L226 Difference]: Without dead ends: 1055 [2022-03-15 14:48:02,836 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 [2022-03-15 14:48:02,836 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 269 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:02,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2351 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-03-15 14:48:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1027. [2022-03-15 14:48:02,844 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) [2022-03-15 14:48:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-03-15 14:48:02,845 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-03-15 14:48:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:02,845 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-03-15 14:48:02,845 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) [2022-03-15 14:48:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-03-15 14:48:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:02,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:02,847 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] [2022-03-15 14:48:02,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-03-15 14:48:02,847 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2007856640, now seen corresponding path program 277 times [2022-03-15 14:48:02,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:02,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230889973] [2022-03-15 14:48:02,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:02,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:03,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:03,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230889973] [2022-03-15 14:48:03,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230889973] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:03,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:03,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:03,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555777459] [2022-03-15 14:48:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:03,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:03,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:03,166 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) [2022-03-15 14:48:05,980 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 [] [2022-03-15 14:48:08,567 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 [] [2022-03-15 14:48:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:09,365 INFO L93 Difference]: Finished difference Result 1423 states and 3483 transitions. [2022-03-15 14:48:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:48:09,365 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 [2022-03-15 14:48:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:09,367 INFO L225 Difference]: With dead ends: 1423 [2022-03-15 14:48:09,367 INFO L226 Difference]: Without dead ends: 1325 [2022-03-15 14:48:09,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=3162, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:48:09,368 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 355 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:09,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2789 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1052 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-03-15 14:48:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2022-03-15 14:48:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1063. [2022-03-15 14:48:09,377 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) [2022-03-15 14:48:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-03-15 14:48:09,378 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-03-15 14:48:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:09,378 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-03-15 14:48:09,378 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) [2022-03-15 14:48:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-03-15 14:48:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:09,379 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:09,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:09,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-03-15 14:48:09,379 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1293619362, now seen corresponding path program 278 times [2022-03-15 14:48:09,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:09,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910607362] [2022-03-15 14:48:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:09,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:09,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910607362] [2022-03-15 14:48:09,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910607362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:09,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:09,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:09,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193201332] [2022-03-15 14:48:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:09,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:09,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:09,698 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 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) [2022-03-15 14:48:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:11,181 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-03-15 14:48:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:48:11,182 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 [2022-03-15 14:48:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:11,183 INFO L225 Difference]: With dead ends: 1315 [2022-03-15 14:48:11,183 INFO L226 Difference]: Without dead ends: 1164 [2022-03-15 14:48:11,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:48:11,184 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 333 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:11,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2761 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:48:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-15 14:48:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-03-15 14:48:11,192 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) [2022-03-15 14:48:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-03-15 14:48:11,193 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-03-15 14:48:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:11,193 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-03-15 14:48:11,193 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) [2022-03-15 14:48:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-03-15 14:48:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:11,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:11,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:11,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-03-15 14:48:11,194 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash 165275392, now seen corresponding path program 279 times [2022-03-15 14:48:11,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:11,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64616684] [2022-03-15 14:48:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:11,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:11,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64616684] [2022-03-15 14:48:11,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64616684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:11,501 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:11,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:11,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700870953] [2022-03-15 14:48:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:11,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:11,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:11,501 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) [2022-03-15 14:48:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:12,520 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-03-15 14:48:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:48:12,520 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 [2022-03-15 14:48:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:12,522 INFO L225 Difference]: With dead ends: 1263 [2022-03-15 14:48:12,522 INFO L226 Difference]: Without dead ends: 1083 [2022-03-15 14:48:12,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=2152, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:48:12,522 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 272 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:12,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2678 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:48:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-03-15 14:48:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-03-15 14:48:12,538 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) [2022-03-15 14:48:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-03-15 14:48:12,539 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-03-15 14:48:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-03-15 14:48:12,539 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) [2022-03-15 14:48:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-03-15 14:48:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:12,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:12,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:12,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-03-15 14:48:12,540 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -73837192, now seen corresponding path program 280 times [2022-03-15 14:48:12,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:12,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397934102] [2022-03-15 14:48:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:12,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:12,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:12,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397934102] [2022-03-15 14:48:12,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397934102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:12,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:12,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:48:12,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282420717] [2022-03-15 14:48:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:12,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:48:12,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:48:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:48:12,833 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) [2022-03-15 14:48:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:13,637 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-03-15 14:48:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:48:13,637 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 [2022-03-15 14:48:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:13,639 INFO L225 Difference]: With dead ends: 1286 [2022-03-15 14:48:13,639 INFO L226 Difference]: Without dead ends: 1067 [2022-03-15 14:48:13,639 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 [2022-03-15 14:48:13,639 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 283 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:13,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2430 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-03-15 14:48:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-03-15 14:48:13,647 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) [2022-03-15 14:48:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-03-15 14:48:13,648 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-03-15 14:48:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-03-15 14:48:13,648 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) [2022-03-15 14:48:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-03-15 14:48:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:13,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:13,649 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] [2022-03-15 14:48:13,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-15 14:48:13,650 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1881229706, now seen corresponding path program 281 times [2022-03-15 14:48:13,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:13,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046845959] [2022-03-15 14:48:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:13,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:13,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046845959] [2022-03-15 14:48:13,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046845959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:13,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:13,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:48:13,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404954885] [2022-03-15 14:48:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:13,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:48:13,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:48:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:48:13,947 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) [2022-03-15 14:48:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:14,767 INFO L93 Difference]: Finished difference Result 1304 states and 3191 transitions. [2022-03-15 14:48:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:48:14,767 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 [2022-03-15 14:48:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:14,768 INFO L225 Difference]: With dead ends: 1304 [2022-03-15 14:48:14,768 INFO L226 Difference]: Without dead ends: 1027 [2022-03-15 14:48:14,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:48:14,769 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 302 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:14,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2487 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-15 14:48:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1011. [2022-03-15 14:48:14,776 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) [2022-03-15 14:48:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2500 transitions. [2022-03-15 14:48:14,778 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2500 transitions. Word has length 79 [2022-03-15 14:48:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:14,778 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 2500 transitions. [2022-03-15 14:48:14,778 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) [2022-03-15 14:48:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2500 transitions. [2022-03-15 14:48:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:14,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:14,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:14,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-03-15 14:48:14,779 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash -181349888, now seen corresponding path program 282 times [2022-03-15 14:48:14,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:14,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139835063] [2022-03-15 14:48:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:15,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:15,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139835063] [2022-03-15 14:48:15,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139835063] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:15,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:15,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:15,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435397311] [2022-03-15 14:48:15,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:15,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:15,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:15,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:15,116 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) [2022-03-15 14:48:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:17,415 INFO L93 Difference]: Finished difference Result 1319 states and 3247 transitions. [2022-03-15 14:48:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:48:17,415 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 [2022-03-15 14:48:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:17,417 INFO L225 Difference]: With dead ends: 1319 [2022-03-15 14:48:17,417 INFO L226 Difference]: Without dead ends: 1221 [2022-03-15 14:48:17,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:48:17,417 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 331 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:17,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2912 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 14:48:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-03-15 14:48:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1075. [2022-03-15 14:48:17,425 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) [2022-03-15 14:48:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-03-15 14:48:17,427 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-03-15 14:48:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:17,427 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-03-15 14:48:17,427 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) [2022-03-15 14:48:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-03-15 14:48:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:17,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:17,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:17,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-03-15 14:48:17,428 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash -935179588, now seen corresponding path program 283 times [2022-03-15 14:48:17,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:17,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810112759] [2022-03-15 14:48:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:17,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:17,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810112759] [2022-03-15 14:48:17,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810112759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:17,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:17,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:17,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019742582] [2022-03-15 14:48:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:17,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:17,758 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) [2022-03-15 14:48:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:19,396 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-03-15 14:48:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:48:19,396 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 [2022-03-15 14:48:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:19,397 INFO L225 Difference]: With dead ends: 1275 [2022-03-15 14:48:19,397 INFO L226 Difference]: Without dead ends: 1140 [2022-03-15 14:48:19,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2944, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:48:19,397 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 333 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:19,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2898 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:48:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-03-15 14:48:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1051. [2022-03-15 14:48:19,406 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) [2022-03-15 14:48:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2602 transitions. [2022-03-15 14:48:19,407 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2602 transitions. Word has length 79 [2022-03-15 14:48:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:19,407 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2602 transitions. [2022-03-15 14:48:19,407 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) [2022-03-15 14:48:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2602 transitions. [2022-03-15 14:48:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:19,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:19,408 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] [2022-03-15 14:48:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-03-15 14:48:19,408 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1991782144, now seen corresponding path program 284 times [2022-03-15 14:48:19,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:19,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544726234] [2022-03-15 14:48:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:19,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:19,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544726234] [2022-03-15 14:48:19,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544726234] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:19,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:19,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:19,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671411417] [2022-03-15 14:48:19,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:19,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:19,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:19,724 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) [2022-03-15 14:48:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:20,789 INFO L93 Difference]: Finished difference Result 1239 states and 3031 transitions. [2022-03-15 14:48:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:48:20,790 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 [2022-03-15 14:48:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:20,791 INFO L225 Difference]: With dead ends: 1239 [2022-03-15 14:48:20,791 INFO L226 Difference]: Without dead ends: 1059 [2022-03-15 14:48:20,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 14:48:20,792 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 276 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:20,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2942 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:48:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-03-15 14:48:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1027. [2022-03-15 14:48:20,800 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) [2022-03-15 14:48:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2540 transitions. [2022-03-15 14:48:20,801 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2540 transitions. Word has length 79 [2022-03-15 14:48:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:20,801 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2540 transitions. [2022-03-15 14:48:20,801 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) [2022-03-15 14:48:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2540 transitions. [2022-03-15 14:48:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:20,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:20,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:20,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-03-15 14:48:20,803 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1752669560, now seen corresponding path program 285 times [2022-03-15 14:48:20,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:20,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732831055] [2022-03-15 14:48:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:21,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:21,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732831055] [2022-03-15 14:48:21,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732831055] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:21,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:21,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:21,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004394770] [2022-03-15 14:48:21,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:21,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:21,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:21,121 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) [2022-03-15 14:48:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:22,003 INFO L93 Difference]: Finished difference Result 1262 states and 3088 transitions. [2022-03-15 14:48:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:48:22,004 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 [2022-03-15 14:48:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:22,005 INFO L225 Difference]: With dead ends: 1262 [2022-03-15 14:48:22,005 INFO L226 Difference]: Without dead ends: 1043 [2022-03-15 14:48:22,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:48:22,006 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 275 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:22,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2682 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-03-15 14:48:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-03-15 14:48:22,014 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) [2022-03-15 14:48:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2529 transitions. [2022-03-15 14:48:22,015 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2529 transitions. Word has length 79 [2022-03-15 14:48:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:22,015 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2529 transitions. [2022-03-15 14:48:22,015 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) [2022-03-15 14:48:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2529 transitions. [2022-03-15 14:48:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:22,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:22,016 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] [2022-03-15 14:48:22,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-03-15 14:48:22,016 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -587230838, now seen corresponding path program 286 times [2022-03-15 14:48:22,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:22,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167849037] [2022-03-15 14:48:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:22,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:22,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167849037] [2022-03-15 14:48:22,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167849037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:22,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:22,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:22,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345882196] [2022-03-15 14:48:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:22,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:22,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:22,334 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) [2022-03-15 14:48:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:23,206 INFO L93 Difference]: Finished difference Result 1292 states and 3158 transitions. [2022-03-15 14:48:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:48:23,206 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 [2022-03-15 14:48:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:23,208 INFO L225 Difference]: With dead ends: 1292 [2022-03-15 14:48:23,208 INFO L226 Difference]: Without dead ends: 1031 [2022-03-15 14:48:23,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:48:23,208 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 325 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:23,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2469 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-03-15 14:48:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1015. [2022-03-15 14:48:23,216 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) [2022-03-15 14:48:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2507 transitions. [2022-03-15 14:48:23,217 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2507 transitions. Word has length 79 [2022-03-15 14:48:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2507 transitions. [2022-03-15 14:48:23,217 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) [2022-03-15 14:48:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2507 transitions. [2022-03-15 14:48:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:23,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:23,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:23,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-03-15 14:48:23,219 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1806063532, now seen corresponding path program 287 times [2022-03-15 14:48:23,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:23,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516760994] [2022-03-15 14:48:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:23,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:23,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516760994] [2022-03-15 14:48:23,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516760994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:23,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:23,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:23,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996831656] [2022-03-15 14:48:23,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:23,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:23,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:23,525 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) [2022-03-15 14:48:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:24,354 INFO L93 Difference]: Finished difference Result 1287 states and 3138 transitions. [2022-03-15 14:48:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:48:24,355 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 [2022-03-15 14:48:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:24,356 INFO L225 Difference]: With dead ends: 1287 [2022-03-15 14:48:24,356 INFO L226 Difference]: Without dead ends: 971 [2022-03-15 14:48:24,363 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 [2022-03-15 14:48:24,364 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 284 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:24,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2740 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:48:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-03-15 14:48:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-03-15 14:48:24,372 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) [2022-03-15 14:48:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2419 transitions. [2022-03-15 14:48:24,373 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2419 transitions. Word has length 79 [2022-03-15 14:48:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:24,373 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2419 transitions. [2022-03-15 14:48:24,373 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) [2022-03-15 14:48:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2419 transitions. [2022-03-15 14:48:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:24,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:24,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:24,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-03-15 14:48:24,374 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash -496973624, now seen corresponding path program 288 times [2022-03-15 14:48:24,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:24,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748953324] [2022-03-15 14:48:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:24,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:24,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748953324] [2022-03-15 14:48:24,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748953324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:24,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:24,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:48:24,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995753795] [2022-03-15 14:48:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:24,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:48:24,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:48:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:48:24,674 INFO L87 Difference]: Start difference. First operand 971 states and 2419 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) [2022-03-15 14:48:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:26,014 INFO L93 Difference]: Finished difference Result 1361 states and 3421 transitions. [2022-03-15 14:48:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:48:26,015 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 [2022-03-15 14:48:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:26,016 INFO L225 Difference]: With dead ends: 1361 [2022-03-15 14:48:26,016 INFO L226 Difference]: Without dead ends: 1231 [2022-03-15 14:48:26,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:48:26,017 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 329 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:26,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2530 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:48:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-03-15 14:48:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1083. [2022-03-15 14:48:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.5129390018484288) internal successors, (2719), 1082 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) [2022-03-15 14:48:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2719 transitions. [2022-03-15 14:48:26,027 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2719 transitions. Word has length 79 [2022-03-15 14:48:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:26,027 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2719 transitions. [2022-03-15 14:48:26,027 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) [2022-03-15 14:48:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2719 transitions. [2022-03-15 14:48:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:26,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:26,028 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] [2022-03-15 14:48:26,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-03-15 14:48:26,028 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1350364790, now seen corresponding path program 289 times [2022-03-15 14:48:26,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:26,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010705254] [2022-03-15 14:48:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:26,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:26,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010705254] [2022-03-15 14:48:26,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010705254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:26,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:26,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:26,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137892335] [2022-03-15 14:48:26,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:26,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:26,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:26,346 INFO L87 Difference]: Start difference. First operand 1083 states and 2719 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) [2022-03-15 14:48:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:28,367 INFO L93 Difference]: Finished difference Result 1368 states and 3430 transitions. [2022-03-15 14:48:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:48:28,368 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 [2022-03-15 14:48:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:28,369 INFO L225 Difference]: With dead ends: 1368 [2022-03-15 14:48:28,369 INFO L226 Difference]: Without dead ends: 1270 [2022-03-15 14:48:28,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=307, Invalid=3475, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:48:28,370 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 363 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:28,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2763 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 14:48:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-03-15 14:48:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1087. [2022-03-15 14:48:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5101289134438307) internal successors, (2726), 1086 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2726 transitions. [2022-03-15 14:48:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2726 transitions. Word has length 79 [2022-03-15 14:48:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:28,381 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2726 transitions. [2022-03-15 14:48:28,381 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) [2022-03-15 14:48:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2726 transitions. [2022-03-15 14:48:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:28,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:28,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:28,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-03-15 14:48:28,382 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -636127512, now seen corresponding path program 290 times [2022-03-15 14:48:28,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:28,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318744710] [2022-03-15 14:48:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:28,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:28,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318744710] [2022-03-15 14:48:28,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318744710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:28,710 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:28,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:28,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270879951] [2022-03-15 14:48:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:28,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:28,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:28,710 INFO L87 Difference]: Start difference. First operand 1087 states and 2726 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) [2022-03-15 14:48:30,972 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 [] [2022-03-15 14:48:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:33,146 INFO L93 Difference]: Finished difference Result 1336 states and 3346 transitions. [2022-03-15 14:48:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:48:33,146 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 [2022-03-15 14:48:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:33,148 INFO L225 Difference]: With dead ends: 1336 [2022-03-15 14:48:33,148 INFO L226 Difference]: Without dead ends: 1223 [2022-03-15 14:48:33,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=2924, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:48:33,148 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 361 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:33,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2771 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-15 14:48:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-03-15 14:48:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1075. [2022-03-15 14:48:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.511173184357542) internal successors, (2697), 1074 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2697 transitions. [2022-03-15 14:48:33,158 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2697 transitions. Word has length 79 [2022-03-15 14:48:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:33,158 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2697 transitions. [2022-03-15 14:48:33,159 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) [2022-03-15 14:48:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2697 transitions. [2022-03-15 14:48:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:33,160 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:33,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:33,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-03-15 14:48:33,160 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash -77168920, now seen corresponding path program 291 times [2022-03-15 14:48:33,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:33,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098776237] [2022-03-15 14:48:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:33,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:33,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098776237] [2022-03-15 14:48:33,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098776237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:33,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:33,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:33,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547038327] [2022-03-15 14:48:33,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:33,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:33,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:33,474 INFO L87 Difference]: Start difference. First operand 1075 states and 2697 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) [2022-03-15 14:48:35,846 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 [] [2022-03-15 14:48:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:35,958 INFO L93 Difference]: Finished difference Result 1366 states and 3420 transitions. [2022-03-15 14:48:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:48:35,958 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 [2022-03-15 14:48:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:35,960 INFO L225 Difference]: With dead ends: 1366 [2022-03-15 14:48:35,960 INFO L226 Difference]: Without dead ends: 1268 [2022-03-15 14:48:35,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:48:35,960 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 320 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:35,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2796 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:48:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-03-15 14:48:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1099. [2022-03-15 14:48:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5091074681238617) internal successors, (2755), 1098 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2755 transitions. [2022-03-15 14:48:35,973 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2755 transitions. Word has length 79 [2022-03-15 14:48:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:35,973 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2755 transitions. [2022-03-15 14:48:35,973 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) [2022-03-15 14:48:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2755 transitions. [2022-03-15 14:48:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:35,974 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:35,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:35,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-03-15 14:48:35,974 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:35,974 INFO L85 PathProgramCache]: Analyzing trace with hash -830998620, now seen corresponding path program 292 times [2022-03-15 14:48:35,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:35,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516948710] [2022-03-15 14:48:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:36,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:36,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516948710] [2022-03-15 14:48:36,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516948710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:36,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:36,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:36,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915455634] [2022-03-15 14:48:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:36,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:36,289 INFO L87 Difference]: Start difference. First operand 1099 states and 2755 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) [2022-03-15 14:48:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:37,663 INFO L93 Difference]: Finished difference Result 1349 states and 3367 transitions. [2022-03-15 14:48:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:48:37,663 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 [2022-03-15 14:48:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:37,665 INFO L225 Difference]: With dead ends: 1349 [2022-03-15 14:48:37,665 INFO L226 Difference]: Without dead ends: 1198 [2022-03-15 14:48:37,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:48:37,665 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 308 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:37,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 3009 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:48:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-15 14:48:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1059. [2022-03-15 14:48:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.507561436672968) internal successors, (2653), 1058 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2653 transitions. [2022-03-15 14:48:37,675 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2653 transitions. Word has length 79 [2022-03-15 14:48:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:37,675 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2653 transitions. [2022-03-15 14:48:37,675 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) [2022-03-15 14:48:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2653 transitions. [2022-03-15 14:48:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:37,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:37,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:37,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-03-15 14:48:37,677 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1125045592, now seen corresponding path program 293 times [2022-03-15 14:48:37,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:37,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984458925] [2022-03-15 14:48:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:37,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:37,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:37,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984458925] [2022-03-15 14:48:37,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984458925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:37,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:37,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:37,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147037785] [2022-03-15 14:48:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:37,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:37,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:37,982 INFO L87 Difference]: Start difference. First operand 1059 states and 2653 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) [2022-03-15 14:48:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:39,439 INFO L93 Difference]: Finished difference Result 1357 states and 3402 transitions. [2022-03-15 14:48:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:48:39,440 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 [2022-03-15 14:48:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:39,441 INFO L225 Difference]: With dead ends: 1357 [2022-03-15 14:48:39,441 INFO L226 Difference]: Without dead ends: 1227 [2022-03-15 14:48:39,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:48:39,442 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 321 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:39,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2899 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:48:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-15 14:48:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1071. [2022-03-15 14:48:39,450 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) [2022-03-15 14:48:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2678 transitions. [2022-03-15 14:48:39,451 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2678 transitions. Word has length 79 [2022-03-15 14:48:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:39,452 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2678 transitions. [2022-03-15 14:48:39,452 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) [2022-03-15 14:48:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2678 transitions. [2022-03-15 14:48:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:39,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:39,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:39,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-03-15 14:48:39,453 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1978436758, now seen corresponding path program 294 times [2022-03-15 14:48:39,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:39,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206086935] [2022-03-15 14:48:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:39,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:39,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206086935] [2022-03-15 14:48:39,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206086935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:39,789 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:39,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:39,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817725027] [2022-03-15 14:48:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:39,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:39,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:39,789 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) [2022-03-15 14:48:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:41,340 INFO L93 Difference]: Finished difference Result 1348 states and 3371 transitions. [2022-03-15 14:48:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:48:41,340 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 [2022-03-15 14:48:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:41,342 INFO L225 Difference]: With dead ends: 1348 [2022-03-15 14:48:41,342 INFO L226 Difference]: Without dead ends: 1250 [2022-03-15 14:48:41,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=322, Invalid=3838, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:48:41,342 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 401 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:41,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 3054 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:48:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-15 14:48:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1075. [2022-03-15 14:48:41,351 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) [2022-03-15 14:48:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2685 transitions. [2022-03-15 14:48:41,352 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2685 transitions. Word has length 79 [2022-03-15 14:48:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:41,352 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2685 transitions. [2022-03-15 14:48:41,352 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) [2022-03-15 14:48:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2685 transitions. [2022-03-15 14:48:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:41,353 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:41,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:41,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-03-15 14:48:41,353 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1264199480, now seen corresponding path program 295 times [2022-03-15 14:48:41,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:41,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949680414] [2022-03-15 14:48:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:41,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:41,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949680414] [2022-03-15 14:48:41,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949680414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:41,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:41,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:41,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804062953] [2022-03-15 14:48:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:41,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:41,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:41,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:41,677 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) [2022-03-15 14:48:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:43,684 INFO L93 Difference]: Finished difference Result 1331 states and 3322 transitions. [2022-03-15 14:48:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 14:48:43,684 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 [2022-03-15 14:48:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:43,686 INFO L225 Difference]: With dead ends: 1331 [2022-03-15 14:48:43,686 INFO L226 Difference]: Without dead ends: 1218 [2022-03-15 14:48:43,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=316, Invalid=3716, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:48:43,686 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 409 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:43,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 2731 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:48:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-03-15 14:48:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1063. [2022-03-15 14:48:43,694 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) [2022-03-15 14:48:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2660 transitions. [2022-03-15 14:48:43,696 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2660 transitions. Word has length 79 [2022-03-15 14:48:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:43,696 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2660 transitions. [2022-03-15 14:48:43,696 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) [2022-03-15 14:48:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2660 transitions. [2022-03-15 14:48:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:43,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:43,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-03-15 14:48:43,697 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -938751254, now seen corresponding path program 296 times [2022-03-15 14:48:43,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:43,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386563659] [2022-03-15 14:48:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:44,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:44,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386563659] [2022-03-15 14:48:44,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386563659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:44,013 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:44,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:44,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974553349] [2022-03-15 14:48:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:44,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:44,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:44,014 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) [2022-03-15 14:48:47,265 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 [] [2022-03-15 14:48:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:48,137 INFO L93 Difference]: Finished difference Result 1393 states and 3485 transitions. [2022-03-15 14:48:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:48:48,137 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 [2022-03-15 14:48:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:48,139 INFO L225 Difference]: With dead ends: 1393 [2022-03-15 14:48:48,139 INFO L226 Difference]: Without dead ends: 1235 [2022-03-15 14:48:48,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=294, Invalid=3366, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:48:48,139 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 349 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:48,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2765 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1077 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-15 14:48:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-03-15 14:48:48,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1103. [2022-03-15 14:48:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.5063520871143377) internal successors, (2762), 1102 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2762 transitions. [2022-03-15 14:48:48,149 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2762 transitions. Word has length 79 [2022-03-15 14:48:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:48,149 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2762 transitions. [2022-03-15 14:48:48,150 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) [2022-03-15 14:48:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2762 transitions. [2022-03-15 14:48:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:48,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:48,151 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] [2022-03-15 14:48:48,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-03-15 14:48:48,151 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -471585718, now seen corresponding path program 297 times [2022-03-15 14:48:48,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:48,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758357677] [2022-03-15 14:48:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:48,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:48,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758357677] [2022-03-15 14:48:48,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758357677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:48,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:48,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:48,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234276638] [2022-03-15 14:48:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:48,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:48,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:48,464 INFO L87 Difference]: Start difference. First operand 1103 states and 2762 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) [2022-03-15 14:48:50,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:48:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:51,489 INFO L93 Difference]: Finished difference Result 1397 states and 3500 transitions. [2022-03-15 14:48:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:48:51,489 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 [2022-03-15 14:48:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:51,491 INFO L225 Difference]: With dead ends: 1397 [2022-03-15 14:48:51,491 INFO L226 Difference]: Without dead ends: 1267 [2022-03-15 14:48:51,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=286, Invalid=3254, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:48:51,491 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 343 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:51,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2681 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:48:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-15 14:48:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1123. [2022-03-15 14:48:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.5035650623885917) internal successors, (2809), 1122 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2809 transitions. [2022-03-15 14:48:51,502 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2809 transitions. Word has length 79 [2022-03-15 14:48:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:51,502 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2809 transitions. [2022-03-15 14:48:51,502 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) [2022-03-15 14:48:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2809 transitions. [2022-03-15 14:48:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:51,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:51,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:51,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-03-15 14:48:51,503 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:51,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1324976884, now seen corresponding path program 298 times [2022-03-15 14:48:51,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:51,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133866514] [2022-03-15 14:48:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:51,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:51,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:51,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133866514] [2022-03-15 14:48:51,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133866514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:51,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:51,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:51,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113613762] [2022-03-15 14:48:51,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:51,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:51,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:51,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:51,837 INFO L87 Difference]: Start difference. First operand 1123 states and 2809 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:53,704 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 [] [2022-03-15 14:48:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:54,972 INFO L93 Difference]: Finished difference Result 1388 states and 3469 transitions. [2022-03-15 14:48:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:48:54,973 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 [2022-03-15 14:48:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:54,974 INFO L225 Difference]: With dead ends: 1388 [2022-03-15 14:48:54,974 INFO L226 Difference]: Without dead ends: 1290 [2022-03-15 14:48:54,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=311, Invalid=3721, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:48:54,975 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 367 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:54,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2928 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:48:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-15 14:48:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1127. [2022-03-15 14:48:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-03-15 14:48:54,985 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-03-15 14:48:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:54,986 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-03-15 14:48:54,986 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) [2022-03-15 14:48:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-03-15 14:48:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:54,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:54,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:54,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-03-15 14:48:54,987 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash -610739606, now seen corresponding path program 299 times [2022-03-15 14:48:54,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:54,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190489796] [2022-03-15 14:48:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:54,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:55,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:55,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190489796] [2022-03-15 14:48:55,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190489796] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:55,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:55,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:48:55,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936992220] [2022-03-15 14:48:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:55,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:48:55,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:48:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:48:55,324 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:56,932 INFO L93 Difference]: Finished difference Result 1371 states and 3420 transitions. [2022-03-15 14:48:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:48:56,933 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 [2022-03-15 14:48:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:56,934 INFO L225 Difference]: With dead ends: 1371 [2022-03-15 14:48:56,935 INFO L226 Difference]: Without dead ends: 1258 [2022-03-15 14:48:56,935 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 [2022-03-15 14:48:56,935 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 376 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:56,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2842 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:48:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-03-15 14:48:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1111. [2022-03-15 14:48:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5081081081081082) internal successors, (2784), 1110 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) [2022-03-15 14:48:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2784 transitions. [2022-03-15 14:48:56,945 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2784 transitions. Word has length 79 [2022-03-15 14:48:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:56,946 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2784 transitions. [2022-03-15 14:48:56,946 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) [2022-03-15 14:48:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2784 transitions. [2022-03-15 14:48:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:56,947 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:56,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-03-15 14:48:56,947 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -285291380, now seen corresponding path program 300 times [2022-03-15 14:48:56,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:56,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920192587] [2022-03-15 14:48:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:57,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:57,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920192587] [2022-03-15 14:48:57,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920192587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:57,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:57,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:57,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478177693] [2022-03-15 14:48:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:57,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:57,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:57,256 INFO L87 Difference]: Start difference. First operand 1111 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) [2022-03-15 14:48:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:58,942 INFO L93 Difference]: Finished difference Result 1377 states and 3441 transitions. [2022-03-15 14:48:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:48:58,942 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 [2022-03-15 14:48:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:58,944 INFO L225 Difference]: With dead ends: 1377 [2022-03-15 14:48:58,944 INFO L226 Difference]: Without dead ends: 1227 [2022-03-15 14:48:58,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:48:58,945 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 349 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:58,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2820 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:48:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-15 14:48:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1111. [2022-03-15 14:48:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5045045045045047) internal successors, (2780), 1110 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2780 transitions. [2022-03-15 14:48:58,959 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2780 transitions. Word has length 79 [2022-03-15 14:48:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:58,959 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2780 transitions. [2022-03-15 14:48:58,959 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) [2022-03-15 14:48:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2780 transitions. [2022-03-15 14:48:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:48:58,961 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:58,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:58,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-03-15 14:48:58,961 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash -991872344, now seen corresponding path program 301 times [2022-03-15 14:48:58,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:58,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645509791] [2022-03-15 14:48:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:59,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:59,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645509791] [2022-03-15 14:48:59,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645509791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:48:59,268 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:48:59,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:48:59,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409074440] [2022-03-15 14:48:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:48:59,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:48:59,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:48:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:48:59,269 INFO L87 Difference]: Start difference. First operand 1111 states and 2780 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) [2022-03-15 14:49:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:00,705 INFO L93 Difference]: Finished difference Result 1409 states and 3517 transitions. [2022-03-15 14:49:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:49:00,706 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 [2022-03-15 14:49:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:00,707 INFO L225 Difference]: With dead ends: 1409 [2022-03-15 14:49:00,707 INFO L226 Difference]: Without dead ends: 1207 [2022-03-15 14:49:00,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:49:00,708 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 315 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:00,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 3027 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-15 14:49:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1087. [2022-03-15 14:49:00,717 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) [2022-03-15 14:49:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-03-15 14:49:00,718 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-03-15 14:49:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:00,718 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-03-15 14:49:00,718 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) [2022-03-15 14:49:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-03-15 14:49:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:00,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:00,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:00,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-03-15 14:49:00,720 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash -305482742, now seen corresponding path program 302 times [2022-03-15 14:49:00,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:00,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858099937] [2022-03-15 14:49:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:01,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:01,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858099937] [2022-03-15 14:49:01,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858099937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:01,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:01,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:01,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680869324] [2022-03-15 14:49:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:01,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:01,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:01,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:01,035 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) [2022-03-15 14:49:03,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:06,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:07,023 INFO L93 Difference]: Finished difference Result 1433 states and 3591 transitions. [2022-03-15 14:49:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:49:07,023 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 [2022-03-15 14:49:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:07,025 INFO L225 Difference]: With dead ends: 1433 [2022-03-15 14:49:07,025 INFO L226 Difference]: Without dead ends: 1303 [2022-03-15 14:49:07,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=335, Invalid=3825, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:49:07,026 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 428 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:07,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2883 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1148 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-03-15 14:49:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-15 14:49:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1123. [2022-03-15 14:49:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4964349376114083) internal successors, (2801), 1122 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) [2022-03-15 14:49:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2801 transitions. [2022-03-15 14:49:07,037 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2801 transitions. Word has length 79 [2022-03-15 14:49:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:07,037 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2801 transitions. [2022-03-15 14:49:07,037 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) [2022-03-15 14:49:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2801 transitions. [2022-03-15 14:49:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:07,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:07,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:07,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-03-15 14:49:07,038 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1158873908, now seen corresponding path program 303 times [2022-03-15 14:49:07,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:07,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003799842] [2022-03-15 14:49:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:07,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:07,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003799842] [2022-03-15 14:49:07,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003799842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:07,349 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:07,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:07,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579202871] [2022-03-15 14:49:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:07,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:07,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:07,349 INFO L87 Difference]: Start difference. First operand 1123 states and 2801 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) [2022-03-15 14:49:09,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:10,317 INFO L93 Difference]: Finished difference Result 1460 states and 3659 transitions. [2022-03-15 14:49:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 14:49:10,318 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 [2022-03-15 14:49:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:10,319 INFO L225 Difference]: With dead ends: 1460 [2022-03-15 14:49:10,319 INFO L226 Difference]: Without dead ends: 1362 [2022-03-15 14:49:10,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=3239, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:49:10,320 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 318 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:10,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2862 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 14:49:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-03-15 14:49:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1163. [2022-03-15 14:49:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.5017211703958693) internal successors, (2907), 1162 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2907 transitions. [2022-03-15 14:49:10,330 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2907 transitions. Word has length 79 [2022-03-15 14:49:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2907 transitions. [2022-03-15 14:49:10,330 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) [2022-03-15 14:49:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2907 transitions. [2022-03-15 14:49:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:10,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:10,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:10,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-03-15 14:49:10,332 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash -444636630, now seen corresponding path program 304 times [2022-03-15 14:49:10,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:10,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030987355] [2022-03-15 14:49:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:10,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:10,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030987355] [2022-03-15 14:49:10,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030987355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:10,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:10,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:10,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256563370] [2022-03-15 14:49:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:10,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:10,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:10,642 INFO L87 Difference]: Start difference. First operand 1163 states and 2907 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) [2022-03-15 14:49:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:12,027 INFO L93 Difference]: Finished difference Result 1443 states and 3610 transitions. [2022-03-15 14:49:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:49:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:49:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:12,029 INFO L225 Difference]: With dead ends: 1443 [2022-03-15 14:49:12,029 INFO L226 Difference]: Without dead ends: 1330 [2022-03-15 14:49:12,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=3239, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:49:12,030 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 317 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:12,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2889 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:49:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-03-15 14:49:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1151. [2022-03-15 14:49:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4991304347826087) internal successors, (2874), 1150 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-03-15 14:49:12,048 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-03-15 14:49:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:12,049 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-03-15 14:49:12,049 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) [2022-03-15 14:49:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-03-15 14:49:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:12,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:12,050 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] [2022-03-15 14:49:12,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-03-15 14:49:12,050 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 114321962, now seen corresponding path program 305 times [2022-03-15 14:49:12,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:12,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315977183] [2022-03-15 14:49:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:12,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:12,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:12,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315977183] [2022-03-15 14:49:12,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315977183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:12,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:12,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:12,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014912741] [2022-03-15 14:49:12,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:12,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:12,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:12,363 INFO L87 Difference]: Start difference. First operand 1151 states and 2874 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) [2022-03-15 14:49:14,615 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 [] [2022-03-15 14:49:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:16,131 INFO L93 Difference]: Finished difference Result 1454 states and 3630 transitions. [2022-03-15 14:49:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:49:16,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:49:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:16,133 INFO L225 Difference]: With dead ends: 1454 [2022-03-15 14:49:16,133 INFO L226 Difference]: Without dead ends: 1356 [2022-03-15 14:49:16,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=3030, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:49:16,133 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 315 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:16,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2893 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-15 14:49:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-03-15 14:49:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1175. [2022-03-15 14:49:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.4974446337308347) internal successors, (2932), 1174 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2932 transitions. [2022-03-15 14:49:16,145 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2932 transitions. Word has length 79 [2022-03-15 14:49:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:16,145 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2932 transitions. [2022-03-15 14:49:16,145 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) [2022-03-15 14:49:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2932 transitions. [2022-03-15 14:49:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:16,146 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:16,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:16,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-03-15 14:49:16,146 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash -639507738, now seen corresponding path program 306 times [2022-03-15 14:49:16,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:16,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502810905] [2022-03-15 14:49:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:16,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:16,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502810905] [2022-03-15 14:49:16,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502810905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:16,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:16,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:16,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656167878] [2022-03-15 14:49:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:16,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:16,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:16,462 INFO L87 Difference]: Start difference. First operand 1175 states and 2932 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) [2022-03-15 14:49:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:17,935 INFO L93 Difference]: Finished difference Result 1437 states and 3577 transitions. [2022-03-15 14:49:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:49:17,935 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 [2022-03-15 14:49:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:17,937 INFO L225 Difference]: With dead ends: 1437 [2022-03-15 14:49:17,937 INFO L226 Difference]: Without dead ends: 1286 [2022-03-15 14:49:17,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:49:17,938 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 310 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:17,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2982 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-03-15 14:49:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1135. [2022-03-15 14:49:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.488536155202822) internal successors, (2822), 1134 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2822 transitions. [2022-03-15 14:49:17,948 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2822 transitions. Word has length 79 [2022-03-15 14:49:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:17,948 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2822 transitions. [2022-03-15 14:49:17,948 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) [2022-03-15 14:49:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2822 transitions. [2022-03-15 14:49:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:17,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:17,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:17,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-03-15 14:49:17,950 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -933554710, now seen corresponding path program 307 times [2022-03-15 14:49:17,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:17,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971770443] [2022-03-15 14:49:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:18,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:18,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971770443] [2022-03-15 14:49:18,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971770443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:18,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:18,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:18,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929020885] [2022-03-15 14:49:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:18,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:18,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:18,281 INFO L87 Difference]: Start difference. First operand 1135 states and 2822 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) [2022-03-15 14:49:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:19,849 INFO L93 Difference]: Finished difference Result 1441 states and 3593 transitions. [2022-03-15 14:49:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:49:19,850 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 [2022-03-15 14:49:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:19,851 INFO L225 Difference]: With dead ends: 1441 [2022-03-15 14:49:19,851 INFO L226 Difference]: Without dead ends: 1287 [2022-03-15 14:49:19,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=340, Invalid=4216, Unknown=0, NotChecked=0, Total=4556 [2022-03-15 14:49:19,852 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 339 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:19,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 3187 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:49:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-15 14:49:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1111. [2022-03-15 14:49:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4864864864864864) internal successors, (2760), 1110 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2760 transitions. [2022-03-15 14:49:19,862 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2760 transitions. Word has length 79 [2022-03-15 14:49:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:19,863 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2760 transitions. [2022-03-15 14:49:19,863 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) [2022-03-15 14:49:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2760 transitions. [2022-03-15 14:49:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:19,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:19,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:19,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-03-15 14:49:19,864 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1786945876, now seen corresponding path program 308 times [2022-03-15 14:49:19,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:19,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443390452] [2022-03-15 14:49:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:20,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:20,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443390452] [2022-03-15 14:49:20,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443390452] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:20,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:20,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:20,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752254241] [2022-03-15 14:49:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:20,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:20,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:20,195 INFO L87 Difference]: Start difference. First operand 1111 states and 2760 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) [2022-03-15 14:49:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:21,673 INFO L93 Difference]: Finished difference Result 1388 states and 3453 transitions. [2022-03-15 14:49:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:49:21,673 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 [2022-03-15 14:49:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:21,675 INFO L225 Difference]: With dead ends: 1388 [2022-03-15 14:49:21,675 INFO L226 Difference]: Without dead ends: 1290 [2022-03-15 14:49:21,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=3364, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:49:21,676 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 316 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:21,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 3135 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-15 14:49:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1115. [2022-03-15 14:49:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4838420107719927) internal successors, (2767), 1114 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) [2022-03-15 14:49:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2767 transitions. [2022-03-15 14:49:21,686 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2767 transitions. Word has length 79 [2022-03-15 14:49:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:21,686 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2767 transitions. [2022-03-15 14:49:21,687 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) [2022-03-15 14:49:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2767 transitions. [2022-03-15 14:49:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:21,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:21,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:21,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-03-15 14:49:21,688 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:21,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1072708598, now seen corresponding path program 309 times [2022-03-15 14:49:21,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:21,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963826614] [2022-03-15 14:49:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:22,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:22,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963826614] [2022-03-15 14:49:22,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963826614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:22,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:22,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:22,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977440426] [2022-03-15 14:49:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:22,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:22,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:22,017 INFO L87 Difference]: Start difference. First operand 1115 states and 2767 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) [2022-03-15 14:49:24,290 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 [] [2022-03-15 14:49:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:25,436 INFO L93 Difference]: Finished difference Result 1371 states and 3404 transitions. [2022-03-15 14:49:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 14:49:25,437 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 [2022-03-15 14:49:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:25,438 INFO L225 Difference]: With dead ends: 1371 [2022-03-15 14:49:25,438 INFO L226 Difference]: Without dead ends: 1258 [2022-03-15 14:49:25,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=3367, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:49:25,439 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 334 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:25,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3163 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:49:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-03-15 14:49:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1091. [2022-03-15 14:49:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.496330275229358) internal successors, (2721), 1090 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) [2022-03-15 14:49:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2721 transitions. [2022-03-15 14:49:25,449 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2721 transitions. Word has length 79 [2022-03-15 14:49:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:25,449 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2721 transitions. [2022-03-15 14:49:25,449 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) [2022-03-15 14:49:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2721 transitions. [2022-03-15 14:49:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:25,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:25,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:25,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-03-15 14:49:25,450 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -747260372, now seen corresponding path program 310 times [2022-03-15 14:49:25,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:25,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971398071] [2022-03-15 14:49:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:25,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:25,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971398071] [2022-03-15 14:49:25,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971398071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:25,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:25,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:25,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245193204] [2022-03-15 14:49:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:25,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:25,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:25,778 INFO L87 Difference]: Start difference. First operand 1091 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) [2022-03-15 14:49:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:27,199 INFO L93 Difference]: Finished difference Result 1377 states and 3433 transitions. [2022-03-15 14:49:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:49:27,199 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 [2022-03-15 14:49:27,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:27,201 INFO L225 Difference]: With dead ends: 1377 [2022-03-15 14:49:27,201 INFO L226 Difference]: Without dead ends: 1203 [2022-03-15 14:49:27,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:49:27,202 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 317 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:27,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 3262 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:49:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-03-15 14:49:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1039. [2022-03-15 14:49:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4990366088631983) internal successors, (2594), 1038 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2594 transitions. [2022-03-15 14:49:27,211 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2594 transitions. Word has length 79 [2022-03-15 14:49:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:27,211 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2594 transitions. [2022-03-15 14:49:27,211 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) [2022-03-15 14:49:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2594 transitions. [2022-03-15 14:49:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:27,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:27,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:27,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-03-15 14:49:27,213 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1530455320, now seen corresponding path program 311 times [2022-03-15 14:49:27,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:27,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705646062] [2022-03-15 14:49:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:27,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:27,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705646062] [2022-03-15 14:49:27,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705646062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:27,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:27,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:27,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513179259] [2022-03-15 14:49:27,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:27,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:27,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:27,523 INFO L87 Difference]: Start difference. First operand 1039 states and 2594 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) [2022-03-15 14:49:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:29,874 INFO L93 Difference]: Finished difference Result 1341 states and 3354 transitions. [2022-03-15 14:49:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:49:29,874 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 [2022-03-15 14:49:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:29,876 INFO L225 Difference]: With dead ends: 1341 [2022-03-15 14:49:29,876 INFO L226 Difference]: Without dead ends: 1211 [2022-03-15 14:49:29,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=3251, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:49:29,876 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 371 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:29,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2662 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:49:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-15 14:49:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1071. [2022-03-15 14:49:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.499065420560748) internal successors, (2674), 1070 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) [2022-03-15 14:49:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2674 transitions. [2022-03-15 14:49:29,886 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2674 transitions. Word has length 79 [2022-03-15 14:49:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:29,886 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2674 transitions. [2022-03-15 14:49:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2674 transitions. [2022-03-15 14:49:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:29,887 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:29,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:29,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-03-15 14:49:29,887 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1911120810, now seen corresponding path program 312 times [2022-03-15 14:49:29,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:29,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610453240] [2022-03-15 14:49:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:30,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:30,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610453240] [2022-03-15 14:49:30,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610453240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:30,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:30,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:30,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539716427] [2022-03-15 14:49:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:30,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:30,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:30,221 INFO L87 Difference]: Start difference. First operand 1071 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) [2022-03-15 14:49:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:31,460 INFO L93 Difference]: Finished difference Result 1328 states and 3312 transitions. [2022-03-15 14:49:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:49:31,460 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 [2022-03-15 14:49:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:31,462 INFO L225 Difference]: With dead ends: 1328 [2022-03-15 14:49:31,462 INFO L226 Difference]: Without dead ends: 1230 [2022-03-15 14:49:31,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:49:31,462 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 293 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:31,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2774 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:49:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-03-15 14:49:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1075. [2022-03-15 14:49:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.496275605214153) internal successors, (2681), 1074 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2681 transitions. [2022-03-15 14:49:31,473 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2681 transitions. Word has length 79 [2022-03-15 14:49:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2681 transitions. [2022-03-15 14:49:31,473 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) [2022-03-15 14:49:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2681 transitions. [2022-03-15 14:49:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:31,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:31,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:31,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-03-15 14:49:31,474 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1669609208, now seen corresponding path program 313 times [2022-03-15 14:49:31,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:31,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332370882] [2022-03-15 14:49:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:31,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:31,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332370882] [2022-03-15 14:49:31,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332370882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:31,788 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:31,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:31,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575859859] [2022-03-15 14:49:31,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:31,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:31,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:31,788 INFO L87 Difference]: Start difference. First operand 1075 states and 2681 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:34,070 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 [] [2022-03-15 14:49:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:35,455 INFO L93 Difference]: Finished difference Result 1296 states and 3228 transitions. [2022-03-15 14:49:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:49:35,455 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 [2022-03-15 14:49:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:35,457 INFO L225 Difference]: With dead ends: 1296 [2022-03-15 14:49:35,457 INFO L226 Difference]: Without dead ends: 1183 [2022-03-15 14:49:35,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:49:35,458 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 345 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:35,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2598 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1022 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:49:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-03-15 14:49:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1063. [2022-03-15 14:49:35,473 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) [2022-03-15 14:49:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2652 transitions. [2022-03-15 14:49:35,474 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2652 transitions. Word has length 79 [2022-03-15 14:49:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:35,474 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2652 transitions. [2022-03-15 14:49:35,474 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) [2022-03-15 14:49:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2652 transitions. [2022-03-15 14:49:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:35,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:35,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:35,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-03-15 14:49:35,476 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1110650616, now seen corresponding path program 314 times [2022-03-15 14:49:35,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:35,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575655241] [2022-03-15 14:49:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:35,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:35,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575655241] [2022-03-15 14:49:35,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575655241] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:35,785 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:35,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:35,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145243860] [2022-03-15 14:49:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:35,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:35,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:35,786 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) [2022-03-15 14:49:39,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:39,376 INFO L93 Difference]: Finished difference Result 1346 states and 3353 transitions. [2022-03-15 14:49:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:49:39,377 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 [2022-03-15 14:49:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:39,379 INFO L225 Difference]: With dead ends: 1346 [2022-03-15 14:49:39,379 INFO L226 Difference]: Without dead ends: 1248 [2022-03-15 14:49:39,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:49:39,379 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 325 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:39,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2834 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 14:49:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-03-15 14:49:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1087. [2022-03-15 14:49:39,390 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) [2022-03-15 14:49:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-03-15 14:49:39,391 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-03-15 14:49:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:39,391 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-03-15 14:49:39,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-03-15 14:49:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:39,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:39,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:39,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-03-15 14:49:39,392 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1864480316, now seen corresponding path program 315 times [2022-03-15 14:49:39,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:39,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776958384] [2022-03-15 14:49:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:39,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:39,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776958384] [2022-03-15 14:49:39,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776958384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:39,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:39,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:39,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605752933] [2022-03-15 14:49:39,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:39,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:39,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:39,714 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) [2022-03-15 14:49:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:41,471 INFO L93 Difference]: Finished difference Result 1314 states and 3265 transitions. [2022-03-15 14:49:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:49:41,472 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 [2022-03-15 14:49:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:41,473 INFO L225 Difference]: With dead ends: 1314 [2022-03-15 14:49:41,473 INFO L226 Difference]: Without dead ends: 1163 [2022-03-15 14:49:41,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:49:41,474 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 298 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:41,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 3018 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 14:49:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-03-15 14:49:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1047. [2022-03-15 14:49:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4933078393881454) internal successors, (2608), 1046 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) [2022-03-15 14:49:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2608 transitions. [2022-03-15 14:49:41,484 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2608 transitions. Word has length 79 [2022-03-15 14:49:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:41,484 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2608 transitions. [2022-03-15 14:49:41,484 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) [2022-03-15 14:49:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2608 transitions. [2022-03-15 14:49:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:41,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:41,485 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] [2022-03-15 14:49:41,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-03-15 14:49:41,485 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1059973384, now seen corresponding path program 316 times [2022-03-15 14:49:41,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:41,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719482580] [2022-03-15 14:49:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:41,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:41,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719482580] [2022-03-15 14:49:41,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719482580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:41,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:41,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:41,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187321387] [2022-03-15 14:49:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:41,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:41,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:41,817 INFO L87 Difference]: Start difference. First operand 1047 states and 2608 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) [2022-03-15 14:49:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:43,335 INFO L93 Difference]: Finished difference Result 1354 states and 3371 transitions. [2022-03-15 14:49:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:49:43,336 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 [2022-03-15 14:49:43,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:43,338 INFO L225 Difference]: With dead ends: 1354 [2022-03-15 14:49:43,338 INFO L226 Difference]: Without dead ends: 1256 [2022-03-15 14:49:43,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=3596, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:49:43,339 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 298 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:43,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 3232 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-03-15 14:49:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1075. [2022-03-15 14:49:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.492551210428305) internal successors, (2677), 1074 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) [2022-03-15 14:49:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2677 transitions. [2022-03-15 14:49:43,353 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2677 transitions. Word has length 79 [2022-03-15 14:49:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:43,353 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2677 transitions. [2022-03-15 14:49:43,353 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) [2022-03-15 14:49:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2677 transitions. [2022-03-15 14:49:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:43,354 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:43,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:43,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-03-15 14:49:43,355 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash 306143684, now seen corresponding path program 317 times [2022-03-15 14:49:43,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:43,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989824950] [2022-03-15 14:49:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:43,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:43,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989824950] [2022-03-15 14:49:43,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989824950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:43,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:43,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:49:43,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665274615] [2022-03-15 14:49:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:49:43,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:49:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:49:43,684 INFO L87 Difference]: Start difference. First operand 1075 states and 2677 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:46,332 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 [] [2022-03-15 14:49:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:47,198 INFO L93 Difference]: Finished difference Result 1386 states and 3435 transitions. [2022-03-15 14:49:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:49:47,199 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 [2022-03-15 14:49:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:47,200 INFO L225 Difference]: With dead ends: 1386 [2022-03-15 14:49:47,200 INFO L226 Difference]: Without dead ends: 1251 [2022-03-15 14:49:47,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=3829, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:49:47,201 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 357 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:47,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2982 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 14:49:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-15 14:49:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1115. [2022-03-15 14:49:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4802513464991023) internal successors, (2763), 1114 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2763 transitions. [2022-03-15 14:49:47,212 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2763 transitions. Word has length 79 [2022-03-15 14:49:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:47,212 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2763 transitions. [2022-03-15 14:49:47,212 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) [2022-03-15 14:49:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2763 transitions. [2022-03-15 14:49:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:47,213 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:47,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:47,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-03-15 14:49:47,213 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:47,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1245991246, now seen corresponding path program 318 times [2022-03-15 14:49:47,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:47,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27219471] [2022-03-15 14:49:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:47,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:47,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:47,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27219471] [2022-03-15 14:49:47,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27219471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:47,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:47,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:47,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884050607] [2022-03-15 14:49:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:47,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:47,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:47,529 INFO L87 Difference]: Start difference. First operand 1115 states and 2763 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) [2022-03-15 14:49:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:50,184 INFO L93 Difference]: Finished difference Result 1400 states and 3457 transitions. [2022-03-15 14:49:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:49:50,185 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 [2022-03-15 14:49:50,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:50,186 INFO L225 Difference]: With dead ends: 1400 [2022-03-15 14:49:50,186 INFO L226 Difference]: Without dead ends: 1206 [2022-03-15 14:49:50,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:49:50,187 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 340 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:50,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2875 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:49:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-03-15 14:49:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1087. [2022-03-15 14:49:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.4769797421731123) internal successors, (2690), 1086 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) [2022-03-15 14:49:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2690 transitions. [2022-03-15 14:49:50,197 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2690 transitions. Word has length 79 [2022-03-15 14:49:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:50,197 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2690 transitions. [2022-03-15 14:49:50,197 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) [2022-03-15 14:49:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2690 transitions. [2022-03-15 14:49:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:50,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:50,198 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] [2022-03-15 14:49:50,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-03-15 14:49:50,198 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1977632186, now seen corresponding path program 319 times [2022-03-15 14:49:50,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:50,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753241627] [2022-03-15 14:49:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:50,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:50,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:50,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753241627] [2022-03-15 14:49:50,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753241627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:50,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:50,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:49:50,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019222444] [2022-03-15 14:49:50,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:49:50,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:49:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:49:50,491 INFO L87 Difference]: Start difference. First operand 1087 states and 2690 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:52,011 INFO L93 Difference]: Finished difference Result 1405 states and 3494 transitions. [2022-03-15 14:49:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:49:52,011 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 [2022-03-15 14:49:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:52,013 INFO L225 Difference]: With dead ends: 1405 [2022-03-15 14:49:52,013 INFO L226 Difference]: Without dead ends: 1275 [2022-03-15 14:49:52,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2711, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:49:52,013 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 313 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:52,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2689 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:49:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-03-15 14:49:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1143. [2022-03-15 14:49:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4833625218914186) internal successors, (2836), 1142 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2836 transitions. [2022-03-15 14:49:52,024 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2836 transitions. Word has length 79 [2022-03-15 14:49:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:52,024 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2836 transitions. [2022-03-15 14:49:52,024 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) [2022-03-15 14:49:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2836 transitions. [2022-03-15 14:49:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:52,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:52,025 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] [2022-03-15 14:49:52,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-03-15 14:49:52,025 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1463943944, now seen corresponding path program 320 times [2022-03-15 14:49:52,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:52,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89955347] [2022-03-15 14:49:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:52,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:52,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89955347] [2022-03-15 14:49:52,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89955347] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:52,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:52,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:52,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265560920] [2022-03-15 14:49:52,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:52,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:52,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:52,347 INFO L87 Difference]: Start difference. First operand 1143 states and 2836 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) [2022-03-15 14:49:54,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:57,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:49:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:57,968 INFO L93 Difference]: Finished difference Result 1424 states and 3536 transitions. [2022-03-15 14:49:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:49:57,969 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 [2022-03-15 14:49:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:57,970 INFO L225 Difference]: With dead ends: 1424 [2022-03-15 14:49:57,970 INFO L226 Difference]: Without dead ends: 1326 [2022-03-15 14:49:57,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:49:57,971 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 369 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:57,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2829 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1155 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-03-15 14:49:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-03-15 14:49:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1147. [2022-03-15 14:49:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.480802792321117) internal successors, (2843), 1146 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2843 transitions. [2022-03-15 14:49:57,981 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2843 transitions. Word has length 79 [2022-03-15 14:49:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:57,982 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2843 transitions. [2022-03-15 14:49:57,982 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) [2022-03-15 14:49:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2843 transitions. [2022-03-15 14:49:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:49:57,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:57,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:57,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-03-15 14:49:57,983 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2116786074, now seen corresponding path program 321 times [2022-03-15 14:49:57,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:57,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117955188] [2022-03-15 14:49:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:58,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:58,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117955188] [2022-03-15 14:49:58,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117955188] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:49:58,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:49:58,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:49:58,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409349259] [2022-03-15 14:49:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:49:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:49:58,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:49:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:49:58,301 INFO L87 Difference]: Start difference. First operand 1147 states and 2843 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) [2022-03-15 14:50:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:00,312 INFO L93 Difference]: Finished difference Result 1380 states and 3419 transitions. [2022-03-15 14:50:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:50:00,312 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 [2022-03-15 14:50:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:00,314 INFO L225 Difference]: With dead ends: 1380 [2022-03-15 14:50:00,314 INFO L226 Difference]: Without dead ends: 1267 [2022-03-15 14:50:00,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:50:00,314 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 314 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:00,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2907 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:50:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-15 14:50:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1135. [2022-03-15 14:50:00,331 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) [2022-03-15 14:50:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2814 transitions. [2022-03-15 14:50:00,332 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2814 transitions. Word has length 79 [2022-03-15 14:50:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:00,333 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2814 transitions. [2022-03-15 14:50:00,333 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) [2022-03-15 14:50:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2814 transitions. [2022-03-15 14:50:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:00,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:00,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:00,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-03-15 14:50:00,334 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1557827482, now seen corresponding path program 322 times [2022-03-15 14:50:00,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:00,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977262245] [2022-03-15 14:50:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:00,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:00,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977262245] [2022-03-15 14:50:00,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977262245] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:00,654 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:00,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:00,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988055973] [2022-03-15 14:50:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:00,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:00,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:00,655 INFO L87 Difference]: Start difference. First operand 1135 states and 2814 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) [2022-03-15 14:50:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:02,686 INFO L93 Difference]: Finished difference Result 1410 states and 3493 transitions. [2022-03-15 14:50:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:50:02,686 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 [2022-03-15 14:50:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:02,688 INFO L225 Difference]: With dead ends: 1410 [2022-03-15 14:50:02,688 INFO L226 Difference]: Without dead ends: 1312 [2022-03-15 14:50:02,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:50:02,689 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 331 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:02,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2852 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:50:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-03-15 14:50:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1143. [2022-03-15 14:50:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4833625218914186) internal successors, (2836), 1142 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2836 transitions. [2022-03-15 14:50:02,699 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2836 transitions. Word has length 79 [2022-03-15 14:50:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:02,699 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2836 transitions. [2022-03-15 14:50:02,699 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) [2022-03-15 14:50:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2836 transitions. [2022-03-15 14:50:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:02,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:02,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:02,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-03-15 14:50:02,701 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1983310114, now seen corresponding path program 323 times [2022-03-15 14:50:02,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:02,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631009808] [2022-03-15 14:50:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:03,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:03,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631009808] [2022-03-15 14:50:03,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631009808] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:03,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:03,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:03,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982978774] [2022-03-15 14:50:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:03,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:03,017 INFO L87 Difference]: Start difference. First operand 1143 states and 2836 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) [2022-03-15 14:50:05,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:50:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:06,924 INFO L93 Difference]: Finished difference Result 1393 states and 3440 transitions. [2022-03-15 14:50:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:50:06,925 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 [2022-03-15 14:50:06,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:06,926 INFO L225 Difference]: With dead ends: 1393 [2022-03-15 14:50:06,926 INFO L226 Difference]: Without dead ends: 1242 [2022-03-15 14:50:06,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:50:06,927 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 319 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:06,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2824 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-15 14:50:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-03-15 14:50:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1119. [2022-03-15 14:50:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4776386404293382) internal successors, (2770), 1118 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) [2022-03-15 14:50:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2770 transitions. [2022-03-15 14:50:06,938 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2770 transitions. Word has length 79 [2022-03-15 14:50:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:06,938 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2770 transitions. [2022-03-15 14:50:06,938 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) [2022-03-15 14:50:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2770 transitions. [2022-03-15 14:50:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:06,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:06,940 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] [2022-03-15 14:50:06,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-03-15 14:50:06,940 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1689263142, now seen corresponding path program 324 times [2022-03-15 14:50:06,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:06,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130050039] [2022-03-15 14:50:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:07,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:07,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130050039] [2022-03-15 14:50:07,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130050039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:07,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:07,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:07,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140791836] [2022-03-15 14:50:07,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:07,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:07,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:07,259 INFO L87 Difference]: Start difference. First operand 1119 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) [2022-03-15 14:50:09,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:50:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:09,684 INFO L93 Difference]: Finished difference Result 1401 states and 3475 transitions. [2022-03-15 14:50:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:50:09,684 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 [2022-03-15 14:50:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:09,686 INFO L225 Difference]: With dead ends: 1401 [2022-03-15 14:50:09,686 INFO L226 Difference]: Without dead ends: 1271 [2022-03-15 14:50:09,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:50:09,687 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 332 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:09,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2709 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:50:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-15 14:50:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1131. [2022-03-15 14:50:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4734513274336285) internal successors, (2795), 1130 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2795 transitions. [2022-03-15 14:50:09,697 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2795 transitions. Word has length 79 [2022-03-15 14:50:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:09,697 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2795 transitions. [2022-03-15 14:50:09,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2795 transitions. [2022-03-15 14:50:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:09,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:09,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:09,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-03-15 14:50:09,699 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:09,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:09,699 INFO L85 PathProgramCache]: Analyzing trace with hash 835871976, now seen corresponding path program 325 times [2022-03-15 14:50:09,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:09,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506736832] [2022-03-15 14:50:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:09,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:10,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:10,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506736832] [2022-03-15 14:50:10,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506736832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:10,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:10,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:10,023 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446904923] [2022-03-15 14:50:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:10,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:10,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:10,024 INFO L87 Difference]: Start difference. First operand 1131 states and 2795 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) [2022-03-15 14:50:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:11,426 INFO L93 Difference]: Finished difference Result 1392 states and 3444 transitions. [2022-03-15 14:50:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:50:11,426 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 [2022-03-15 14:50:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:11,428 INFO L225 Difference]: With dead ends: 1392 [2022-03-15 14:50:11,428 INFO L226 Difference]: Without dead ends: 1294 [2022-03-15 14:50:11,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:50:11,429 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 332 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:11,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 3202 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:50:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-03-15 14:50:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1135. [2022-03-15 14:50:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4708994708994707) internal successors, (2802), 1134 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2802 transitions. [2022-03-15 14:50:11,439 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2802 transitions. Word has length 79 [2022-03-15 14:50:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:11,439 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2802 transitions. [2022-03-15 14:50:11,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2802 transitions. [2022-03-15 14:50:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:11,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:11,441 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] [2022-03-15 14:50:11,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-03-15 14:50:11,441 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1550109254, now seen corresponding path program 326 times [2022-03-15 14:50:11,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:11,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216095339] [2022-03-15 14:50:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:11,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:11,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:11,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216095339] [2022-03-15 14:50:11,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216095339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:11,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:11,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:11,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5575969] [2022-03-15 14:50:11,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:11,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:11,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:11,766 INFO L87 Difference]: Start difference. First operand 1135 states and 2802 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) [2022-03-15 14:50:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:13,275 INFO L93 Difference]: Finished difference Result 1375 states and 3395 transitions. [2022-03-15 14:50:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:50:13,275 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 [2022-03-15 14:50:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:13,277 INFO L225 Difference]: With dead ends: 1375 [2022-03-15 14:50:13,277 INFO L226 Difference]: Without dead ends: 1262 [2022-03-15 14:50:13,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=3483, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 14:50:13,277 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 392 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:13,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 2883 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:50:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-03-15 14:50:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1123. [2022-03-15 14:50:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4750445632798574) internal successors, (2777), 1122 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2777 transitions. [2022-03-15 14:50:13,288 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2777 transitions. Word has length 79 [2022-03-15 14:50:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:13,288 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2777 transitions. [2022-03-15 14:50:13,288 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) [2022-03-15 14:50:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2777 transitions. [2022-03-15 14:50:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:13,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:13,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:13,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-03-15 14:50:13,290 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1875557480, now seen corresponding path program 327 times [2022-03-15 14:50:13,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:13,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259032170] [2022-03-15 14:50:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:13,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:13,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259032170] [2022-03-15 14:50:13,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259032170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:13,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:13,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:13,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275178190] [2022-03-15 14:50:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:13,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:13,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:13,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:13,596 INFO L87 Difference]: Start difference. First operand 1123 states and 2777 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:14,853 INFO L93 Difference]: Finished difference Result 1373 states and 3394 transitions. [2022-03-15 14:50:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:50:14,854 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 [2022-03-15 14:50:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:14,855 INFO L225 Difference]: With dead ends: 1373 [2022-03-15 14:50:14,855 INFO L226 Difference]: Without dead ends: 1215 [2022-03-15 14:50:14,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:50:14,856 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 307 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:14,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2785 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:50:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-03-15 14:50:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1111. [2022-03-15 14:50:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4756756756756757) internal successors, (2748), 1110 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2748 transitions. [2022-03-15 14:50:14,866 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2748 transitions. Word has length 79 [2022-03-15 14:50:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:14,866 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2748 transitions. [2022-03-15 14:50:14,866 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) [2022-03-15 14:50:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2748 transitions. [2022-03-15 14:50:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:14,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:14,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:14,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-03-15 14:50:14,867 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1952244280, now seen corresponding path program 328 times [2022-03-15 14:50:14,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:14,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822757802] [2022-03-15 14:50:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:15,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:15,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822757802] [2022-03-15 14:50:15,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822757802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:15,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:15,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:15,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17462273] [2022-03-15 14:50:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:15,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:15,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:15,172 INFO L87 Difference]: Start difference. First operand 1111 states and 2748 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) [2022-03-15 14:50:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:17,054 INFO L93 Difference]: Finished difference Result 1397 states and 3464 transitions. [2022-03-15 14:50:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:50:17,055 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 [2022-03-15 14:50:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:17,056 INFO L225 Difference]: With dead ends: 1397 [2022-03-15 14:50:17,056 INFO L226 Difference]: Without dead ends: 1267 [2022-03-15 14:50:17,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=283, Invalid=3257, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:50:17,057 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 360 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:17,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2590 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 14:50:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-03-15 14:50:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1131. [2022-03-15 14:50:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4734513274336285) internal successors, (2795), 1130 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2795 transitions. [2022-03-15 14:50:17,067 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2795 transitions. Word has length 79 [2022-03-15 14:50:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:17,068 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2795 transitions. [2022-03-15 14:50:17,068 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) [2022-03-15 14:50:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2795 transitions. [2022-03-15 14:50:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:17,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:17,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:17,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-03-15 14:50:17,069 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1489331850, now seen corresponding path program 329 times [2022-03-15 14:50:17,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:17,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804469086] [2022-03-15 14:50:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:17,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:17,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804469086] [2022-03-15 14:50:17,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804469086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:17,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:17,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:17,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581687080] [2022-03-15 14:50:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:17,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:17,394 INFO L87 Difference]: Start difference. First operand 1131 states and 2795 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) [2022-03-15 14:50:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:18,830 INFO L93 Difference]: Finished difference Result 1388 states and 3433 transitions. [2022-03-15 14:50:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 14:50:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:50:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:18,832 INFO L225 Difference]: With dead ends: 1388 [2022-03-15 14:50:18,832 INFO L226 Difference]: Without dead ends: 1290 [2022-03-15 14:50:18,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:50:18,833 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 334 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:18,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2951 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:50:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-15 14:50:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1135. [2022-03-15 14:50:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4708994708994707) internal successors, (2802), 1134 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2802 transitions. [2022-03-15 14:50:18,852 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2802 transitions. Word has length 79 [2022-03-15 14:50:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:18,852 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2802 transitions. [2022-03-15 14:50:18,853 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) [2022-03-15 14:50:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2802 transitions. [2022-03-15 14:50:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:18,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:18,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:18,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-03-15 14:50:18,854 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2091398168, now seen corresponding path program 330 times [2022-03-15 14:50:18,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:18,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589493150] [2022-03-15 14:50:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:19,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:19,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589493150] [2022-03-15 14:50:19,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589493150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:19,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:19,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:19,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454866618] [2022-03-15 14:50:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:19,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:19,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:19,184 INFO L87 Difference]: Start difference. First operand 1135 states and 2802 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) [2022-03-15 14:50:21,452 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 [] [2022-03-15 14:50:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:22,840 INFO L93 Difference]: Finished difference Result 1371 states and 3384 transitions. [2022-03-15 14:50:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:50:22,840 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 [2022-03-15 14:50:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:22,842 INFO L225 Difference]: With dead ends: 1371 [2022-03-15 14:50:22,842 INFO L226 Difference]: Without dead ends: 1258 [2022-03-15 14:50:22,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=3265, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:50:22,843 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 322 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:22,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 3135 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1185 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:50:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-03-15 14:50:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1123. [2022-03-15 14:50:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4750445632798574) internal successors, (2777), 1122 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2777 transitions. [2022-03-15 14:50:22,854 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2777 transitions. Word has length 79 [2022-03-15 14:50:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:22,854 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2777 transitions. [2022-03-15 14:50:22,854 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) [2022-03-15 14:50:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2777 transitions. [2022-03-15 14:50:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:22,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:22,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:22,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-03-15 14:50:22,855 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1765949942, now seen corresponding path program 331 times [2022-03-15 14:50:22,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:22,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761280769] [2022-03-15 14:50:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:23,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:23,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761280769] [2022-03-15 14:50:23,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761280769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:23,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:23,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:23,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373342444] [2022-03-15 14:50:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:23,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:23,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:23,166 INFO L87 Difference]: Start difference. First operand 1123 states and 2777 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:25,127 INFO L93 Difference]: Finished difference Result 1377 states and 3405 transitions. [2022-03-15 14:50:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:50:25,127 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 [2022-03-15 14:50:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:25,129 INFO L225 Difference]: With dead ends: 1377 [2022-03-15 14:50:25,129 INFO L226 Difference]: Without dead ends: 1227 [2022-03-15 14:50:25,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:50:25,130 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:25,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2727 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 14:50:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-03-15 14:50:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1119. [2022-03-15 14:50:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.474060822898032) internal successors, (2766), 1118 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2766 transitions. [2022-03-15 14:50:25,140 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2766 transitions. Word has length 79 [2022-03-15 14:50:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:25,140 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2766 transitions. [2022-03-15 14:50:25,140 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) [2022-03-15 14:50:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2766 transitions. [2022-03-15 14:50:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:25,141 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:25,142 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] [2022-03-15 14:50:25,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-03-15 14:50:25,142 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1822436390, now seen corresponding path program 332 times [2022-03-15 14:50:25,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:25,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54326443] [2022-03-15 14:50:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:25,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:25,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54326443] [2022-03-15 14:50:25,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54326443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:25,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:25,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:50:25,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639503888] [2022-03-15 14:50:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:25,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:50:25,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:25,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:50:25,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:50:25,466 INFO L87 Difference]: Start difference. First operand 1119 states and 2766 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) [2022-03-15 14:50:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:27,163 INFO L93 Difference]: Finished difference Result 1389 states and 3430 transitions. [2022-03-15 14:50:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:50:27,163 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 [2022-03-15 14:50:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:27,165 INFO L225 Difference]: With dead ends: 1389 [2022-03-15 14:50:27,165 INFO L226 Difference]: Without dead ends: 1187 [2022-03-15 14:50:27,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:50:27,166 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 343 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:27,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2753 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:50:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-03-15 14:50:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1095. [2022-03-15 14:50:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4716636197440587) internal successors, (2704), 1094 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) [2022-03-15 14:50:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2704 transitions. [2022-03-15 14:50:27,176 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2704 transitions. Word has length 79 [2022-03-15 14:50:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:27,176 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2704 transitions. [2022-03-15 14:50:27,176 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) [2022-03-15 14:50:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2704 transitions. [2022-03-15 14:50:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:27,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:27,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:27,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-03-15 14:50:27,177 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:27,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 706687594, now seen corresponding path program 333 times [2022-03-15 14:50:27,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:27,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45931607] [2022-03-15 14:50:27,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:27,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:27,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45931607] [2022-03-15 14:50:27,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45931607] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:27,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:27,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:27,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137558262] [2022-03-15 14:50:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:27,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:27,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:27,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:27,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:27,509 INFO L87 Difference]: Start difference. First operand 1095 states and 2704 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) [2022-03-15 14:50:29,962 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 [] [2022-03-15 14:50:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:31,697 INFO L93 Difference]: Finished difference Result 1377 states and 3409 transitions. [2022-03-15 14:50:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:50:31,697 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 [2022-03-15 14:50:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:31,699 INFO L225 Difference]: With dead ends: 1377 [2022-03-15 14:50:31,699 INFO L226 Difference]: Without dead ends: 1247 [2022-03-15 14:50:31,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:50:31,699 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 330 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:31,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 3012 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1129 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-15 14:50:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-03-15 14:50:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1119. [2022-03-15 14:50:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4704830053667264) internal successors, (2762), 1118 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2762 transitions. [2022-03-15 14:50:31,710 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2762 transitions. Word has length 79 [2022-03-15 14:50:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:31,710 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2762 transitions. [2022-03-15 14:50:31,710 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) [2022-03-15 14:50:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2762 transitions. [2022-03-15 14:50:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:31,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:31,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:31,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-03-15 14:50:31,712 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash -146703572, now seen corresponding path program 334 times [2022-03-15 14:50:31,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:31,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868428129] [2022-03-15 14:50:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:32,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:32,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868428129] [2022-03-15 14:50:32,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868428129] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:32,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:32,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:32,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967634675] [2022-03-15 14:50:32,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:32,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:32,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:32,042 INFO L87 Difference]: Start difference. First operand 1119 states and 2762 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) [2022-03-15 14:50:34,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:50:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:35,046 INFO L93 Difference]: Finished difference Result 1353 states and 3343 transitions. [2022-03-15 14:50:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:50:35,046 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 [2022-03-15 14:50:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:35,048 INFO L225 Difference]: With dead ends: 1353 [2022-03-15 14:50:35,048 INFO L226 Difference]: Without dead ends: 1255 [2022-03-15 14:50:35,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2623, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:50:35,049 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 290 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:35,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2858 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:50:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-03-15 14:50:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1123. [2022-03-15 14:50:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4679144385026737) internal successors, (2769), 1122 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2769 transitions. [2022-03-15 14:50:35,059 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2769 transitions. Word has length 79 [2022-03-15 14:50:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:35,059 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2769 transitions. [2022-03-15 14:50:35,059 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) [2022-03-15 14:50:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2769 transitions. [2022-03-15 14:50:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:35,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:35,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:35,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-03-15 14:50:35,061 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash 567533706, now seen corresponding path program 335 times [2022-03-15 14:50:35,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:35,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588766372] [2022-03-15 14:50:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:35,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:35,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588766372] [2022-03-15 14:50:35,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588766372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:35,385 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:35,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:35,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550390050] [2022-03-15 14:50:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:35,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:35,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:35,386 INFO L87 Difference]: Start difference. First operand 1123 states and 2769 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:38,931 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 [] [2022-03-15 14:50:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:39,544 INFO L93 Difference]: Finished difference Result 1363 states and 3362 transitions. [2022-03-15 14:50:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:50:39,545 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 [2022-03-15 14:50:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:39,546 INFO L225 Difference]: With dead ends: 1363 [2022-03-15 14:50:39,546 INFO L226 Difference]: Without dead ends: 1250 [2022-03-15 14:50:39,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2721, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:50:39,547 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 325 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:39,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2774 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1077 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-03-15 14:50:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-03-15 14:50:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1111. [2022-03-15 14:50:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.472072072072072) internal successors, (2744), 1110 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2744 transitions. [2022-03-15 14:50:39,557 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2744 transitions. Word has length 79 [2022-03-15 14:50:39,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:39,557 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2744 transitions. [2022-03-15 14:50:39,557 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) [2022-03-15 14:50:39,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2744 transitions. [2022-03-15 14:50:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:39,558 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:39,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:39,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-03-15 14:50:39,558 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 892981932, now seen corresponding path program 336 times [2022-03-15 14:50:39,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:39,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63512062] [2022-03-15 14:50:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:39,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:39,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63512062] [2022-03-15 14:50:39,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63512062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:39,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:39,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:39,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931783314] [2022-03-15 14:50:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:39,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:39,898 INFO L87 Difference]: Start difference. First operand 1111 states and 2744 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) [2022-03-15 14:50:41,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:50:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:42,523 INFO L93 Difference]: Finished difference Result 1357 states and 3350 transitions. [2022-03-15 14:50:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:50:42,523 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 [2022-03-15 14:50:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:42,525 INFO L225 Difference]: With dead ends: 1357 [2022-03-15 14:50:42,525 INFO L226 Difference]: Without dead ends: 1207 [2022-03-15 14:50:42,525 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 [2022-03-15 14:50:42,525 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 354 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:42,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2754 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 14:50:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-03-15 14:50:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1107. [2022-03-15 14:50:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.4710669077757683) internal successors, (2733), 1106 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) [2022-03-15 14:50:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2733 transitions. [2022-03-15 14:50:42,536 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2733 transitions. Word has length 79 [2022-03-15 14:50:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:42,536 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2733 transitions. [2022-03-15 14:50:42,536 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) [2022-03-15 14:50:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2733 transitions. [2022-03-15 14:50:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:42,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:42,537 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] [2022-03-15 14:50:42,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-03-15 14:50:42,537 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash 186400968, now seen corresponding path program 337 times [2022-03-15 14:50:42,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:42,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854998356] [2022-03-15 14:50:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:42,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:42,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854998356] [2022-03-15 14:50:42,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854998356] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:42,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:42,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:42,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114243457] [2022-03-15 14:50:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:42,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:42,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:42,877 INFO L87 Difference]: Start difference. First operand 1107 states and 2733 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) [2022-03-15 14:50:45,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:45,007 INFO L93 Difference]: Finished difference Result 1381 states and 3408 transitions. [2022-03-15 14:50:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:50:45,007 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 [2022-03-15 14:50:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:45,009 INFO L225 Difference]: With dead ends: 1381 [2022-03-15 14:50:45,009 INFO L226 Difference]: Without dead ends: 1195 [2022-03-15 14:50:45,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:50:45,010 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 356 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:45,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2908 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:50:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-03-15 14:50:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-03-15 14:50:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4690346083788706) internal successors, (2711), 1098 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2711 transitions. [2022-03-15 14:50:45,020 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2711 transitions. Word has length 79 [2022-03-15 14:50:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:45,020 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2711 transitions. [2022-03-15 14:50:45,020 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) [2022-03-15 14:50:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2711 transitions. [2022-03-15 14:50:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:45,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:45,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:45,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-03-15 14:50:45,021 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:45,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2130614310, now seen corresponding path program 338 times [2022-03-15 14:50:45,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:45,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081616618] [2022-03-15 14:50:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:45,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:45,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:45,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081616618] [2022-03-15 14:50:45,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081616618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:45,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:45,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 14:50:45,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383373621] [2022-03-15 14:50:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:45,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 14:50:45,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 14:50:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:50:45,365 INFO L87 Difference]: Start difference. First operand 1099 states and 2711 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) [2022-03-15 14:50:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:46,657 INFO L93 Difference]: Finished difference Result 1385 states and 3411 transitions. [2022-03-15 14:50:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:50:46,657 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 [2022-03-15 14:50:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:46,659 INFO L225 Difference]: With dead ends: 1385 [2022-03-15 14:50:46,659 INFO L226 Difference]: Without dead ends: 1175 [2022-03-15 14:50:46,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:50:46,660 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 310 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:46,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 3059 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:50:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-03-15 14:50:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1083. [2022-03-15 14:50:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.475970425138632) internal successors, (2679), 1082 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) [2022-03-15 14:50:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2679 transitions. [2022-03-15 14:50:46,670 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2679 transitions. Word has length 79 [2022-03-15 14:50:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:46,671 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2679 transitions. [2022-03-15 14:50:46,671 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) [2022-03-15 14:50:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2679 transitions. [2022-03-15 14:50:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:46,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:46,672 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] [2022-03-15 14:50:46,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-03-15 14:50:46,672 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1409731142, now seen corresponding path program 339 times [2022-03-15 14:50:46,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:46,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983161167] [2022-03-15 14:50:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:46,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:46,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:46,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983161167] [2022-03-15 14:50:46,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983161167] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:46,976 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:46,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:50:46,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375596434] [2022-03-15 14:50:46,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:46,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:50:46,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:50:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:50:46,976 INFO L87 Difference]: Start difference. First operand 1083 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) [2022-03-15 14:50:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:49,497 INFO L93 Difference]: Finished difference Result 1389 states and 3450 transitions. [2022-03-15 14:50:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:50:49,497 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 [2022-03-15 14:50:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:49,499 INFO L225 Difference]: With dead ends: 1389 [2022-03-15 14:50:49,499 INFO L226 Difference]: Without dead ends: 1259 [2022-03-15 14:50:49,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=2706, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:50:49,499 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 357 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:49,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2669 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 14:50:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-03-15 14:50:49,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1139. [2022-03-15 14:50:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4824253075571177) internal successors, (2825), 1138 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2825 transitions. [2022-03-15 14:50:49,510 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2825 transitions. Word has length 79 [2022-03-15 14:50:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:49,510 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2825 transitions. [2022-03-15 14:50:49,510 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) [2022-03-15 14:50:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2825 transitions. [2022-03-15 14:50:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:49,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:49,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:49,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-03-15 14:50:49,511 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 556339976, now seen corresponding path program 340 times [2022-03-15 14:50:49,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:49,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708651599] [2022-03-15 14:50:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:49,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:49,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708651599] [2022-03-15 14:50:49,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708651599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:49,814 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:49,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:50:49,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39745277] [2022-03-15 14:50:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:49,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:50:49,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:50:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:50:49,815 INFO L87 Difference]: Start difference. First operand 1139 states and 2825 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) [2022-03-15 14:50:52,073 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 [] [2022-03-15 14:50:55,591 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 [] [2022-03-15 14:50:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:56,075 INFO L93 Difference]: Finished difference Result 1420 states and 3521 transitions. [2022-03-15 14:50:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:50:56,076 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 [2022-03-15 14:50:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:56,077 INFO L225 Difference]: With dead ends: 1420 [2022-03-15 14:50:56,077 INFO L226 Difference]: Without dead ends: 1322 [2022-03-15 14:50:56,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=2802, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:50:56,078 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 328 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:56,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2649 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1055 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-03-15 14:50:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-03-15 14:50:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1167. [2022-03-15 14:50:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.478559176672384) internal successors, (2890), 1166 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2890 transitions. [2022-03-15 14:50:56,089 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2890 transitions. Word has length 79 [2022-03-15 14:50:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:56,089 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2890 transitions. [2022-03-15 14:50:56,089 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) [2022-03-15 14:50:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2890 transitions. [2022-03-15 14:50:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:56,090 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:56,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:56,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-03-15 14:50:56,091 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:56,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:56,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1270577254, now seen corresponding path program 341 times [2022-03-15 14:50:56,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:56,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353925295] [2022-03-15 14:50:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:56,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:56,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:56,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353925295] [2022-03-15 14:50:56,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353925295] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:56,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:56,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:50:56,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721797061] [2022-03-15 14:50:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:56,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:50:56,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:50:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:50:56,405 INFO L87 Difference]: Start difference. First operand 1167 states and 2890 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) [2022-03-15 14:50:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:57,949 INFO L93 Difference]: Finished difference Result 1403 states and 3472 transitions. [2022-03-15 14:50:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:50:57,949 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 [2022-03-15 14:50:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:57,950 INFO L225 Difference]: With dead ends: 1403 [2022-03-15 14:50:57,951 INFO L226 Difference]: Without dead ends: 1290 [2022-03-15 14:50:57,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:50:57,951 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 331 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:57,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2582 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:50:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-03-15 14:50:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1159. [2022-03-15 14:50:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.476683937823834) internal successors, (2868), 1158 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2868 transitions. [2022-03-15 14:50:57,962 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2868 transitions. Word has length 79 [2022-03-15 14:50:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:57,962 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2868 transitions. [2022-03-15 14:50:57,962 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) [2022-03-15 14:50:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2868 transitions. [2022-03-15 14:50:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:50:57,963 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:57,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:57,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-03-15 14:50:57,963 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1829535846, now seen corresponding path program 342 times [2022-03-15 14:50:57,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:57,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522718922] [2022-03-15 14:50:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:58,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:58,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522718922] [2022-03-15 14:50:58,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522718922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:50:58,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:50:58,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:50:58,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189790439] [2022-03-15 14:50:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:50:58,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:50:58,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:50:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:50:58,267 INFO L87 Difference]: Start difference. First operand 1159 states and 2868 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) [2022-03-15 14:51:00,910 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 [] [2022-03-15 14:51:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:02,094 INFO L93 Difference]: Finished difference Result 1498 states and 3703 transitions. [2022-03-15 14:51:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:51:02,095 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 [2022-03-15 14:51:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:02,097 INFO L225 Difference]: With dead ends: 1498 [2022-03-15 14:51:02,097 INFO L226 Difference]: Without dead ends: 1400 [2022-03-15 14:51:02,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=2700, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:51:02,097 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 311 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:02,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2814 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-15 14:51:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-03-15 14:51:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1231. [2022-03-15 14:51:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 2.486178861788618) internal successors, (3058), 1230 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3058 transitions. [2022-03-15 14:51:02,109 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3058 transitions. Word has length 79 [2022-03-15 14:51:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:02,109 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 3058 transitions. [2022-03-15 14:51:02,110 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) [2022-03-15 14:51:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3058 transitions. [2022-03-15 14:51:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:02,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:02,111 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] [2022-03-15 14:51:02,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-03-15 14:51:02,111 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1075706146, now seen corresponding path program 343 times [2022-03-15 14:51:02,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:02,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202637886] [2022-03-15 14:51:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:02,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:02,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202637886] [2022-03-15 14:51:02,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202637886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:02,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:02,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:02,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978897852] [2022-03-15 14:51:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:02,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:02,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:02,422 INFO L87 Difference]: Start difference. First operand 1231 states and 3058 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) [2022-03-15 14:51:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:04,821 INFO L93 Difference]: Finished difference Result 1532 states and 3792 transitions. [2022-03-15 14:51:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:51:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:51:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:04,823 INFO L225 Difference]: With dead ends: 1532 [2022-03-15 14:51:04,823 INFO L226 Difference]: Without dead ends: 1353 [2022-03-15 14:51:04,823 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 [2022-03-15 14:51:04,824 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 314 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2713 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 14:51:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-03-15 14:51:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1215. [2022-03-15 14:51:04,834 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) [2022-03-15 14:51:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2998 transitions. [2022-03-15 14:51:04,835 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2998 transitions. Word has length 79 [2022-03-15 14:51:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:04,835 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2998 transitions. [2022-03-15 14:51:04,836 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) [2022-03-15 14:51:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2998 transitions. [2022-03-15 14:51:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:04,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:04,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:04,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-03-15 14:51:04,837 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash 781659174, now seen corresponding path program 344 times [2022-03-15 14:51:04,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:04,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411029975] [2022-03-15 14:51:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:05,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:05,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411029975] [2022-03-15 14:51:05,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411029975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:05,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:05,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:05,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141841246] [2022-03-15 14:51:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:05,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:05,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:05,161 INFO L87 Difference]: Start difference. First operand 1215 states and 2998 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:07,316 INFO L93 Difference]: Finished difference Result 1469 states and 3626 transitions. [2022-03-15 14:51:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:51:07,316 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 [2022-03-15 14:51:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:07,318 INFO L225 Difference]: With dead ends: 1469 [2022-03-15 14:51:07,318 INFO L226 Difference]: Without dead ends: 1339 [2022-03-15 14:51:07,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:51:07,319 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 328 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:07,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2866 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 14:51:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-03-15 14:51:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1227. [2022-03-15 14:51:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.465742251223491) internal successors, (3023), 1226 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3023 transitions. [2022-03-15 14:51:07,330 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3023 transitions. Word has length 79 [2022-03-15 14:51:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:07,330 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3023 transitions. [2022-03-15 14:51:07,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3023 transitions. [2022-03-15 14:51:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:07,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:07,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:07,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-03-15 14:51:07,332 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash -71731992, now seen corresponding path program 345 times [2022-03-15 14:51:07,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:07,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282616032] [2022-03-15 14:51:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:07,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:07,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282616032] [2022-03-15 14:51:07,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282616032] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:07,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:07,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:07,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848663232] [2022-03-15 14:51:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:07,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:07,646 INFO L87 Difference]: Start difference. First operand 1227 states and 3023 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) [2022-03-15 14:51:10,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:12,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:13,443 INFO L93 Difference]: Finished difference Result 1484 states and 3641 transitions. [2022-03-15 14:51:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:51:13,444 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 [2022-03-15 14:51:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:13,446 INFO L225 Difference]: With dead ends: 1484 [2022-03-15 14:51:13,446 INFO L226 Difference]: Without dead ends: 1358 [2022-03-15 14:51:13,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=3237, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:51:13,446 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 318 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:13,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 3105 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-15 14:51:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-03-15 14:51:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1227. [2022-03-15 14:51:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.459216965742251) internal successors, (3015), 1226 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3015 transitions. [2022-03-15 14:51:13,458 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3015 transitions. Word has length 79 [2022-03-15 14:51:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:13,459 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3015 transitions. [2022-03-15 14:51:13,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3015 transitions. [2022-03-15 14:51:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:13,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:13,460 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] [2022-03-15 14:51:13,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-03-15 14:51:13,460 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 642505286, now seen corresponding path program 346 times [2022-03-15 14:51:13,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:13,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963883570] [2022-03-15 14:51:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:13,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:13,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963883570] [2022-03-15 14:51:13,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963883570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:13,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:13,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:13,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808887716] [2022-03-15 14:51:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:13,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:13,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:13,779 INFO L87 Difference]: Start difference. First operand 1227 states and 3015 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) [2022-03-15 14:51:16,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:16,820 INFO L93 Difference]: Finished difference Result 1451 states and 3560 transitions. [2022-03-15 14:51:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 14:51:16,820 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 [2022-03-15 14:51:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:16,822 INFO L225 Difference]: With dead ends: 1451 [2022-03-15 14:51:16,822 INFO L226 Difference]: Without dead ends: 1338 [2022-03-15 14:51:16,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:51:16,823 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 368 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:16,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2792 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 14:51:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-03-15 14:51:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1207. [2022-03-15 14:51:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.4676616915422884) internal successors, (2976), 1206 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2976 transitions. [2022-03-15 14:51:16,835 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2976 transitions. Word has length 79 [2022-03-15 14:51:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:16,835 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 2976 transitions. [2022-03-15 14:51:16,835 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) [2022-03-15 14:51:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2976 transitions. [2022-03-15 14:51:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:16,836 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:16,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-03-15 14:51:16,836 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 967953512, now seen corresponding path program 347 times [2022-03-15 14:51:16,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:16,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961728737] [2022-03-15 14:51:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:17,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:17,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961728737] [2022-03-15 14:51:17,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961728737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:17,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:17,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:17,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810535863] [2022-03-15 14:51:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:17,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:17,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:17,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:17,156 INFO L87 Difference]: Start difference. First operand 1207 states and 2976 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) [2022-03-15 14:51:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:19,470 INFO L93 Difference]: Finished difference Result 1429 states and 3516 transitions. [2022-03-15 14:51:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:51:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:51:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:19,472 INFO L225 Difference]: With dead ends: 1429 [2022-03-15 14:51:19,472 INFO L226 Difference]: Without dead ends: 1271 [2022-03-15 14:51:19,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=2924, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:51:19,472 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 337 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:19,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2830 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:51:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-15 14:51:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1195. [2022-03-15 14:51:19,481 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) [2022-03-15 14:51:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2947 transitions. [2022-03-15 14:51:19,483 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2947 transitions. Word has length 79 [2022-03-15 14:51:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:19,483 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2947 transitions. [2022-03-15 14:51:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2947 transitions. [2022-03-15 14:51:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:19,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:19,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-03-15 14:51:19,484 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1123269736, now seen corresponding path program 348 times [2022-03-15 14:51:19,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:19,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174228662] [2022-03-15 14:51:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:19,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:19,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174228662] [2022-03-15 14:51:19,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174228662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:19,783 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:19,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:19,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455696508] [2022-03-15 14:51:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:19,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:19,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:19,783 INFO L87 Difference]: Start difference. First operand 1195 states and 2947 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) [2022-03-15 14:51:22,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:23,403 INFO L93 Difference]: Finished difference Result 1445 states and 3548 transitions. [2022-03-15 14:51:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:51:23,403 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 [2022-03-15 14:51:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:23,405 INFO L225 Difference]: With dead ends: 1445 [2022-03-15 14:51:23,405 INFO L226 Difference]: Without dead ends: 1331 [2022-03-15 14:51:23,405 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 [2022-03-15 14:51:23,405 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 349 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:23,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2690 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:51:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-03-15 14:51:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1219. [2022-03-15 14:51:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.4704433497536944) internal successors, (3009), 1218 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3009 transitions. [2022-03-15 14:51:23,416 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3009 transitions. Word has length 79 [2022-03-15 14:51:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:23,416 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3009 transitions. [2022-03-15 14:51:23,416 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) [2022-03-15 14:51:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3009 transitions. [2022-03-15 14:51:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:23,417 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:23,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:23,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-03-15 14:51:23,417 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 756375306, now seen corresponding path program 349 times [2022-03-15 14:51:23,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:23,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712002259] [2022-03-15 14:51:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:23,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:23,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712002259] [2022-03-15 14:51:23,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712002259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:23,716 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:23,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:23,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112326436] [2022-03-15 14:51:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:23,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:23,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:23,717 INFO L87 Difference]: Start difference. First operand 1219 states and 3009 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) [2022-03-15 14:51:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:24,907 INFO L93 Difference]: Finished difference Result 1460 states and 3579 transitions. [2022-03-15 14:51:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:51:24,907 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 [2022-03-15 14:51:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:24,909 INFO L225 Difference]: With dead ends: 1460 [2022-03-15 14:51:24,909 INFO L226 Difference]: Without dead ends: 1350 [2022-03-15 14:51:24,909 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 [2022-03-15 14:51:24,910 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 283 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:24,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2718 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:51:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-03-15 14:51:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1207. [2022-03-15 14:51:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.4643449419568824) internal successors, (2972), 1206 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2972 transitions. [2022-03-15 14:51:24,921 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2972 transitions. Word has length 79 [2022-03-15 14:51:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:24,922 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 2972 transitions. [2022-03-15 14:51:24,922 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) [2022-03-15 14:51:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2972 transitions. [2022-03-15 14:51:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:24,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:24,923 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] [2022-03-15 14:51:24,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-03-15 14:51:24,923 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1470612584, now seen corresponding path program 350 times [2022-03-15 14:51:24,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:24,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972810010] [2022-03-15 14:51:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:25,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:25,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972810010] [2022-03-15 14:51:25,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972810010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:25,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:25,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:25,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900363973] [2022-03-15 14:51:25,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:25,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:25,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:25,231 INFO L87 Difference]: Start difference. First operand 1207 states and 2972 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) [2022-03-15 14:51:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:26,697 INFO L93 Difference]: Finished difference Result 1416 states and 3466 transitions. [2022-03-15 14:51:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:51:26,698 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 [2022-03-15 14:51:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:26,699 INFO L225 Difference]: With dead ends: 1416 [2022-03-15 14:51:26,699 INFO L226 Difference]: Without dead ends: 1307 [2022-03-15 14:51:26,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:51:26,700 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 318 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:26,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2533 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:51:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-03-15 14:51:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1199. [2022-03-15 14:51:26,709 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) [2022-03-15 14:51:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2954 transitions. [2022-03-15 14:51:26,711 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2954 transitions. Word has length 79 [2022-03-15 14:51:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:26,711 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2954 transitions. [2022-03-15 14:51:26,711 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) [2022-03-15 14:51:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2954 transitions. [2022-03-15 14:51:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:26,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:26,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:26,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-03-15 14:51:26,712 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1941303398, now seen corresponding path program 351 times [2022-03-15 14:51:26,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:26,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188367931] [2022-03-15 14:51:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:26,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:27,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:27,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188367931] [2022-03-15 14:51:27,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188367931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:27,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:27,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:27,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817166487] [2022-03-15 14:51:27,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:27,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:27,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:27,011 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) [2022-03-15 14:51:29,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:31,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 14:51:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:32,432 INFO L93 Difference]: Finished difference Result 1462 states and 3596 transitions. [2022-03-15 14:51:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:51:32,433 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 [2022-03-15 14:51:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:32,434 INFO L225 Difference]: With dead ends: 1462 [2022-03-15 14:51:32,434 INFO L226 Difference]: Without dead ends: 1364 [2022-03-15 14:51:32,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:51:32,435 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 314 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 44 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:32,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2618 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1004 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-03-15 14:51:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-03-15 14:51:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1227. [2022-03-15 14:51:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.4690048939641107) internal successors, (3027), 1226 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) [2022-03-15 14:51:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3027 transitions. [2022-03-15 14:51:32,446 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3027 transitions. Word has length 79 [2022-03-15 14:51:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:32,446 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 3027 transitions. [2022-03-15 14:51:32,446 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) [2022-03-15 14:51:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3027 transitions. [2022-03-15 14:51:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:32,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:32,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:32,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-03-15 14:51:32,448 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1187473698, now seen corresponding path program 352 times [2022-03-15 14:51:32,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:32,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118133771] [2022-03-15 14:51:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:32,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:32,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118133771] [2022-03-15 14:51:32,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118133771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:32,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:32,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:32,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861608260] [2022-03-15 14:51:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:32,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:32,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:32,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:32,772 INFO L87 Difference]: Start difference. First operand 1227 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) [2022-03-15 14:51:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:34,409 INFO L93 Difference]: Finished difference Result 1521 states and 3728 transitions. [2022-03-15 14:51:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:51:34,409 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 [2022-03-15 14:51:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:34,411 INFO L225 Difference]: With dead ends: 1521 [2022-03-15 14:51:34,411 INFO L226 Difference]: Without dead ends: 1350 [2022-03-15 14:51:34,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:51:34,412 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 328 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:34,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2574 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:51:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-03-15 14:51:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1203. [2022-03-15 14:51:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.466722129783694) internal successors, (2965), 1202 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2965 transitions. [2022-03-15 14:51:34,423 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2965 transitions. Word has length 79 [2022-03-15 14:51:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:34,423 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 2965 transitions. [2022-03-15 14:51:34,423 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) [2022-03-15 14:51:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2965 transitions. [2022-03-15 14:51:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:34,424 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:34,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:34,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-03-15 14:51:34,424 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1519780028, now seen corresponding path program 353 times [2022-03-15 14:51:34,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:34,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176214408] [2022-03-15 14:51:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:34,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:34,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176214408] [2022-03-15 14:51:34,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176214408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:34,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:34,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:34,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800718114] [2022-03-15 14:51:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:34,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:34,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:34,739 INFO L87 Difference]: Start difference. First operand 1203 states and 2965 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) [2022-03-15 14:51:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:36,315 INFO L93 Difference]: Finished difference Result 1510 states and 3708 transitions. [2022-03-15 14:51:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:51:36,315 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 [2022-03-15 14:51:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:36,317 INFO L225 Difference]: With dead ends: 1510 [2022-03-15 14:51:36,317 INFO L226 Difference]: Without dead ends: 1384 [2022-03-15 14:51:36,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=3354, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:51:36,317 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 302 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:36,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3126 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:51:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-03-15 14:51:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1191. [2022-03-15 14:51:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.4638655462184875) internal successors, (2932), 1190 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2932 transitions. [2022-03-15 14:51:36,328 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2932 transitions. Word has length 79 [2022-03-15 14:51:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:36,328 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2932 transitions. [2022-03-15 14:51:36,328 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) [2022-03-15 14:51:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2932 transitions. [2022-03-15 14:51:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:36,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:36,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:36,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-03-15 14:51:36,329 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2021357568, now seen corresponding path program 354 times [2022-03-15 14:51:36,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:36,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31304385] [2022-03-15 14:51:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:36,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:36,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31304385] [2022-03-15 14:51:36,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31304385] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:36,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:36,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:51:36,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028409708] [2022-03-15 14:51:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:36,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:51:36,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:51:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:51:36,644 INFO L87 Difference]: Start difference. First operand 1191 states and 2932 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) [2022-03-15 14:51:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:37,993 INFO L93 Difference]: Finished difference Result 1414 states and 3468 transitions. [2022-03-15 14:51:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:51:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-15 14:51:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:37,995 INFO L225 Difference]: With dead ends: 1414 [2022-03-15 14:51:37,995 INFO L226 Difference]: Without dead ends: 1279 [2022-03-15 14:51:37,995 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 [2022-03-15 14:51:37,996 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:37,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 3038 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:51:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-15 14:51:38,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1183. [2022-03-15 14:51:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.458544839255499) internal successors, (2906), 1182 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2906 transitions. [2022-03-15 14:51:38,006 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2906 transitions. Word has length 79 [2022-03-15 14:51:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:38,006 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2906 transitions. [2022-03-15 14:51:38,006 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) [2022-03-15 14:51:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2906 transitions. [2022-03-15 14:51:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:38,007 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:38,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:38,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-03-15 14:51:38,007 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1333762166, now seen corresponding path program 355 times [2022-03-15 14:51:38,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:38,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838324132] [2022-03-15 14:51:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:38,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:38,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838324132] [2022-03-15 14:51:38,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838324132] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:38,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:38,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:38,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139565352] [2022-03-15 14:51:38,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:38,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:38,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:38,308 INFO L87 Difference]: Start difference. First operand 1183 states and 2906 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) [2022-03-15 14:51:42,107 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 [] [2022-03-15 14:51:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:42,709 INFO L93 Difference]: Finished difference Result 1445 states and 3535 transitions. [2022-03-15 14:51:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:51:42,709 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 [2022-03-15 14:51:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:42,711 INFO L225 Difference]: With dead ends: 1445 [2022-03-15 14:51:42,711 INFO L226 Difference]: Without dead ends: 1271 [2022-03-15 14:51:42,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 14:51:42,712 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 348 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:42,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2555 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-15 14:51:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-03-15 14:51:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1195. [2022-03-15 14:51:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4547738693467336) internal successors, (2931), 1194 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2931 transitions. [2022-03-15 14:51:42,723 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2931 transitions. Word has length 79 [2022-03-15 14:51:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:42,723 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2931 transitions. [2022-03-15 14:51:42,723 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) [2022-03-15 14:51:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2931 transitions. [2022-03-15 14:51:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:42,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:42,724 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] [2022-03-15 14:51:42,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-03-15 14:51:42,724 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -892072148, now seen corresponding path program 356 times [2022-03-15 14:51:42,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:42,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410356027] [2022-03-15 14:51:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:43,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:43,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410356027] [2022-03-15 14:51:43,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410356027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:43,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:43,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:43,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316202098] [2022-03-15 14:51:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:43,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:43,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:43,114 INFO L87 Difference]: Start difference. First operand 1195 states and 2931 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) [2022-03-15 14:51:46,828 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 [] [2022-03-15 14:51:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:47,572 INFO L93 Difference]: Finished difference Result 1470 states and 3606 transitions. [2022-03-15 14:51:47,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 14:51:47,572 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 [2022-03-15 14:51:47,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:47,574 INFO L225 Difference]: With dead ends: 1470 [2022-03-15 14:51:47,574 INFO L226 Difference]: Without dead ends: 1372 [2022-03-15 14:51:47,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=2711, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:51:47,575 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 320 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:47,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2700 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1051 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-15 14:51:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-15 14:51:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1215. [2022-03-15 14:51:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.459637561779242) internal successors, (2986), 1214 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2986 transitions. [2022-03-15 14:51:47,587 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2986 transitions. Word has length 79 [2022-03-15 14:51:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:47,588 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2986 transitions. [2022-03-15 14:51:47,588 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) [2022-03-15 14:51:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2986 transitions. [2022-03-15 14:51:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:47,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:47,589 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] [2022-03-15 14:51:47,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-03-15 14:51:47,589 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1645901848, now seen corresponding path program 357 times [2022-03-15 14:51:47,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:47,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234053986] [2022-03-15 14:51:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:47,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:47,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234053986] [2022-03-15 14:51:47,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234053986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:51:47,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:51:47,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:51:47,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654019460] [2022-03-15 14:51:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:51:47,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:51:47,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:51:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:51:47,898 INFO L87 Difference]: Start difference. First operand 1215 states and 2986 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) [2022-03-15 14:51:50,806 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 [] [2022-03-15 14:51:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:51,484 INFO L93 Difference]: Finished difference Result 1426 states and 3489 transitions. [2022-03-15 14:51:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:51:51,484 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 [2022-03-15 14:51:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:51,486 INFO L225 Difference]: With dead ends: 1426 [2022-03-15 14:51:51,486 INFO L226 Difference]: Without dead ends: 1291 [2022-03-15 14:51:51,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2608, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:51:51,486 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 331 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:51,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2556 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 14:51:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-03-15 14:51:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1203. [2022-03-15 14:51:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.456738768718802) internal successors, (2953), 1202 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2953 transitions. [2022-03-15 14:51:51,497 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2953 transitions. Word has length 79 [2022-03-15 14:51:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:51,497 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 2953 transitions. [2022-03-15 14:51:51,497 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) [2022-03-15 14:51:51,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2953 transitions. [2022-03-15 14:51:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-15 14:51:51,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:51,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:51,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-03-15 14:51:51,499 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash -706054286, now seen corresponding path program 358 times [2022-03-15 14:51:51,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:51,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870953846] [2022-03-15 14:51:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-03-15 14:51:51,736 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:51:51,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:51:51,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-03-15 14:51:51,737 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 80 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. [2022-03-15 14:51:51,738 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:51:51,738 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:51:51,741 INFO L732 BasicCegarLoop]: Path program histogram: [358] [2022-03-15 14:51:51,742 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:51:51,742 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:51:51,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:51:51 BasicIcfg [2022-03-15 14:51:51,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:51:51,744 INFO L158 Benchmark]: Toolchain (without parser) took 758755.19ms. Allocated memory was 203.4MB in the beginning and 342.9MB in the end (delta: 139.5MB). Free memory was 147.3MB in the beginning and 137.6MB in the end (delta: 9.8MB). Peak memory consumption was 149.3MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,744 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 203.4MB. Free memory is still 163.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:51:51,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.74ms. Allocated memory was 203.4MB in the beginning and 285.2MB in the end (delta: 81.8MB). Free memory was 147.2MB in the beginning and 257.4MB in the end (delta: -110.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.89ms. Allocated memory is still 285.2MB. Free memory was 257.4MB in the beginning and 255.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,744 INFO L158 Benchmark]: Boogie Preprocessor took 26.59ms. Allocated memory is still 285.2MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,744 INFO L158 Benchmark]: RCFGBuilder took 332.04ms. Allocated memory is still 285.2MB. Free memory was 254.2MB in the beginning and 242.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,745 INFO L158 Benchmark]: TraceAbstraction took 758043.25ms. Allocated memory was 285.2MB in the beginning and 342.9MB in the end (delta: 57.7MB). Free memory was 241.6MB in the beginning and 137.6MB in the end (delta: 104.1MB). Peak memory consumption was 161.2MB. Max. memory is 8.0GB. [2022-03-15 14:51:51,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 203.4MB. Free memory is still 163.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 314.74ms. Allocated memory was 203.4MB in the beginning and 285.2MB in the end (delta: 81.8MB). Free memory was 147.2MB in the beginning and 257.4MB in the end (delta: -110.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.89ms. Allocated memory is still 285.2MB. Free memory was 257.4MB in the beginning and 255.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.59ms. Allocated memory is still 285.2MB. Free memory was 255.8MB in the beginning and 254.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 332.04ms. Allocated memory is still 285.2MB. Free memory was 254.2MB in the beginning and 242.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 758043.25ms. Allocated memory was 285.2MB in the beginning and 342.9MB in the end (delta: 57.7MB). Free memory was 241.6MB in the beginning and 137.6MB in the end (delta: 104.1MB). Peak memory consumption was 161.2MB. 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 analyzing trace of length 80 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 80 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 80 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 757.9s, OverallIterations: 358, TraceHistogramMax: 1, PathProgramHistogramMax: 358, EmptinessCheckTime: 0.5s, AutomataDifference: 632.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 49 mSolverCounterUnknown, 111090 SdHoareTripleChecker+Valid, 431.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111090 mSDsluCounter, 973443 SdHoareTripleChecker+Invalid, 401.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 956110 mSDsCounter, 12229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 374169 IncrementalHoareTripleChecker+Invalid, 386447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12229 mSolverCounterUnsat, 64911 mSDtfsCounter, 374169 mSolverCounterSat, 1.6s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19444 GetRequests, 736 SyntacticMatches, 953 SemanticMatches, 17755 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198948 ImplicationChecksByTransitivity, 270.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1231occurred in iteration=342, InterpolantAutomatonStates: 14765, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 357 MinimizatonAttempts, 36726 StatesRemovedByMinimization, 354 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 115.4s InterpolantComputationTime, 28203 NumberOfCodeBlocks, 28203 NumberOfCodeBlocksAsserted, 357 NumberOfCheckSat, 27846 ConstructedInterpolants, 0 QuantifiedInterpolants, 351018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 357 InterpolantComputations, 357 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