/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:56:26,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:56:26,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:56:26,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:56:26,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:56:26,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:56:26,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:56:26,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:56:26,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:56:26,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:56:26,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:56:26,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:56:26,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:56:26,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:56:26,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:56:26,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:56:26,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:56:26,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:56:26,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:56:26,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:56:26,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:56:26,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:56:26,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:56:26,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:56:27,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 23:56:27,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 23:56:27,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 23:56:27,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 23:56:27,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 23:56:27,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 23:56:27,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:56:27,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:56:27,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:56:27,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:56:27,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:56:27,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:56:27,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:56:27,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:56:27,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:56:27,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:56:27,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:56:27,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-05 23:56:27,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:56:27,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:56:27,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:56:27,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:56:27,034 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:56:27,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:56:27,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:56:27,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:56:27,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:56:27,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:56:27,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:56:27,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:56:27,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:56:27,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:56:27,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:56:27,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:56:27,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:56:27,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-05 23:56:27,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:56:27,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:56:27,039 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-05 23:56:27,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:56:27,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:56:27,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:56:27,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:56:27,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:56:27,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2020-10-05 23:56:27,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294a43c96/a25bd9715aeb4016acfbedb2be2093f9/FLAG9badf80fe [2020-10-05 23:56:27,908 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:56:27,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2020-10-05 23:56:27,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294a43c96/a25bd9715aeb4016acfbedb2be2093f9/FLAG9badf80fe [2020-10-05 23:56:28,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294a43c96/a25bd9715aeb4016acfbedb2be2093f9 [2020-10-05 23:56:28,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:56:28,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:56:28,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:56:28,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:56:28,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:56:28,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61217914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28, skipping insertion in model container [2020-10-05 23:56:28,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:56:28,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:56:28,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:56:28,803 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:56:28,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:56:28,926 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:56:28,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28 WrapperNode [2020-10-05 23:56:28,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:56:28,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:56:28,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:56:28,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:56:28,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:56:28,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:56:28,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:56:28,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:56:28,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... [2020-10-05 23:56:28,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:56:29,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:56:29,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:56:29,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:56:29,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:56:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:56:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-05 23:56:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-05 23:56:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-05 23:56:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-05 23:56:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-05 23:56:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-05 23:56:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:56:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-05 23:56:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:56:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:56:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:56:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:56:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:56:29,065 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:56:29,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:56:29,387 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-05 23:56:29,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:56:29 BoogieIcfgContainer [2020-10-05 23:56:29,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:56:29,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:56:29,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:56:29,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:56:29,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:56:28" (1/3) ... [2020-10-05 23:56:29,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7655f9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:56:29, skipping insertion in model container [2020-10-05 23:56:29,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:56:28" (2/3) ... [2020-10-05 23:56:29,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7655f9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:56:29, skipping insertion in model container [2020-10-05 23:56:29,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:56:29" (3/3) ... [2020-10-05 23:56:29,407 INFO L109 eAbstractionObserver]: Analyzing ICFG lazy01.i [2020-10-05 23:56:29,431 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:56:29,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:56:29,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:56:29,446 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:56:29,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,498 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,498 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,498 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,499 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,500 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,501 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,501 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,501 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,502 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,503 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,503 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,514 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,514 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,515 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,515 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,515 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,517 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,518 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,518 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,518 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,518 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:56:29,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-05 23:56:29,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:56:29,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:56:29,572 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:56:29,573 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-05 23:56:29,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:56:29,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:56:29,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:56:29,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:56:29,589 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 78 transitions, 198 flow [2020-10-05 23:56:29,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 198 flow [2020-10-05 23:56:29,659 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-05 23:56:29,660 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:56:29,666 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 86 events. 6/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2020-10-05 23:56:29,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 198 flow [2020-10-05 23:56:29,693 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-05 23:56:29,693 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:56:29,694 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 86 events. 6/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2020-10-05 23:56:29,696 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1116 [2020-10-05 23:56:29,697 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:56:31,073 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-05 23:56:31,194 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-05 23:56:31,209 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2560 [2020-10-05 23:56:31,209 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2020-10-05 23:56:31,213 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 38 transitions, 118 flow [2020-10-05 23:56:31,260 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 562 states. [2020-10-05 23:56:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-10-05 23:56:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:56:31,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:56:31,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:56:31,276 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:56:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:56:31,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1645296335, now seen corresponding path program 1 times [2020-10-05 23:56:31,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:56:31,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255981856] [2020-10-05 23:56:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:56:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:56:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:56:31,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255981856] [2020-10-05 23:56:31,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:56:31,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:56:31,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [183823634] [2020-10-05 23:56:31,525 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-05 23:56:31,528 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-05 23:56:31,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-05 23:56:31,542 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-05 23:56:31,546 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-05 23:56:31,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:56:31,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:56:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:56:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:56:31,564 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 3 states. [2020-10-05 23:56:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:56:31,616 INFO L93 Difference]: Finished difference Result 538 states and 1407 transitions. [2020-10-05 23:56:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:56:31,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 23:56:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:56:31,634 INFO L225 Difference]: With dead ends: 538 [2020-10-05 23:56:31,634 INFO L226 Difference]: Without dead ends: 250 [2020-10-05 23:56:31,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:56:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-05 23:56:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-05 23:56:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-05 23:56:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2020-10-05 23:56:31,737 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 8 [2020-10-05 23:56:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:56:31,738 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2020-10-05 23:56:31,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:56:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2020-10-05 23:56:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:56:31,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:56:31,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:56:31,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:56:31,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:56:31,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:56:31,742 INFO L82 PathProgramCache]: Analyzing trace with hash 581811827, now seen corresponding path program 1 times [2020-10-05 23:56:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:56:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314154222] [2020-10-05 23:56:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:56:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:56:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:56:31,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314154222] [2020-10-05 23:56:31,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:56:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:56:31,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1768134623] [2020-10-05 23:56:31,809 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-05 23:56:31,810 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-05 23:56:31,812 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-05 23:56:31,813 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-05 23:56:31,813 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-05 23:56:31,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:56:31,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:56:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:56:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:56:31,815 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand 3 states. [2020-10-05 23:56:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:56:31,834 INFO L93 Difference]: Finished difference Result 142 states and 253 transitions. [2020-10-05 23:56:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:56:31,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:56:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:56:31,837 INFO L225 Difference]: With dead ends: 142 [2020-10-05 23:56:31,837 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 23:56:31,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:56:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 23:56:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-05 23:56:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:56:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 250 transitions. [2020-10-05 23:56:31,845 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 250 transitions. Word has length 10 [2020-10-05 23:56:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:56:31,846 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 250 transitions. [2020-10-05 23:56:31,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:56:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 250 transitions. [2020-10-05 23:56:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:56:31,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:56:31,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:56:31,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:56:31,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:56:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:56:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash 861729767, now seen corresponding path program 1 times [2020-10-05 23:56:31,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:56:31,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166919321] [2020-10-05 23:56:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:56:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:56:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:56:31,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166919321] [2020-10-05 23:56:31,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:56:31,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:56:31,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [57382345] [2020-10-05 23:56:31,907 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-05 23:56:31,908 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-05 23:56:31,911 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-05 23:56:31,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-05 23:56:31,934 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-05 23:56:31,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:56:31,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:56:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:56:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:56:31,935 INFO L87 Difference]: Start difference. First operand 140 states and 250 transitions. Second operand 4 states. [2020-10-05 23:56:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:56:31,956 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2020-10-05 23:56:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:56:31,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 23:56:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:56:31,958 INFO L225 Difference]: With dead ends: 135 [2020-10-05 23:56:31,958 INFO L226 Difference]: Without dead ends: 130 [2020-10-05 23:56:31,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:56:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-05 23:56:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-05 23:56:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:56:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 232 transitions. [2020-10-05 23:56:31,966 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 232 transitions. Word has length 11 [2020-10-05 23:56:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:56:31,966 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 232 transitions. [2020-10-05 23:56:31,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:56:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 232 transitions. [2020-10-05 23:56:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:56:31,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:56:31,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:56:31,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:56:31,968 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:56:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:56:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1322208688, now seen corresponding path program 1 times [2020-10-05 23:56:31,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:56:31,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915310079] [2020-10-05 23:56:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:56:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:56:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:56:32,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915310079] [2020-10-05 23:56:32,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:56:32,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:56:32,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [52717572] [2020-10-05 23:56:32,036 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-05 23:56:32,037 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-05 23:56:32,040 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-10-05 23:56:32,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-05 23:56:32,112 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-05 23:56:32,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:56:32,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:56:32,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:56:32,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:56:32,114 INFO L87 Difference]: Start difference. First operand 130 states and 232 transitions. Second operand 5 states. [2020-10-05 23:56:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:56:32,140 INFO L93 Difference]: Finished difference Result 125 states and 223 transitions. [2020-10-05 23:56:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:56:32,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-05 23:56:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:56:32,142 INFO L225 Difference]: With dead ends: 125 [2020-10-05 23:56:32,142 INFO L226 Difference]: Without dead ends: 120 [2020-10-05 23:56:32,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:56:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-05 23:56:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-05 23:56:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:56:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 214 transitions. [2020-10-05 23:56:32,148 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 214 transitions. Word has length 12 [2020-10-05 23:56:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:56:32,148 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 214 transitions. [2020-10-05 23:56:32,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:56:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 214 transitions. [2020-10-05 23:56:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:56:32,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:56:32,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:56:32,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:56:32,150 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:56:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:56:32,151 INFO L82 PathProgramCache]: Analyzing trace with hash 779348326, now seen corresponding path program 1 times [2020-10-05 23:56:32,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:56:32,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672711060] [2020-10-05 23:56:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:56:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:56:32,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:56:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:56:32,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:56:32,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:56:32,231 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:56:32,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:56:32,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:56:32 BasicIcfg [2020-10-05 23:56:32,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:56:32,273 INFO L168 Benchmark]: Toolchain (without parser) took 4008.63 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 99.8 MB in the beginning and 111.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 95.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,274 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.89 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 159.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.81 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,276 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 157.1 MB in the end (delta: 948.7 kB). Peak memory consumption was 948.7 kB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,277 INFO L168 Benchmark]: RCFGBuilder took 389.77 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 132.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,278 INFO L168 Benchmark]: TraceAbstraction took 2879.89 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.9 MB in the beginning and 111.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:56:32,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.89 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 159.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.81 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 157.1 MB in the end (delta: 948.7 kB). Peak memory consumption was 948.7 kB. Max. memory is 7.1 GB. * RCFGBuilder took 389.77 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 132.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2879.89 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 132.9 MB in the beginning and 111.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 81 ProgramPointsBefore, 41 ProgramPointsAfterwards, 78 TransitionsBefore, 38 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 464 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2560 CheckedPairsTotal, 44 TotalNumberOfCompositions - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 pthread_mutex_t mutex; [L684] 0 int data = 0; [L712] 0 pthread_t t1, t2, t3; [L713] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L715] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L688] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L690] 1 return 0; [L695] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L697] 2 return 0; [L702] COND TRUE 3 data >= 3 [L703] 3 __VERIFIER_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 116 SDtfs, 50 SDslu, 135 SDs, 0 SdLazy, 38 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! Received shutdown request...