/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-eaa536417960c97dc4122e532ee2691877b99d76-eaa5364 [2021-10-16 23:06:43,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 23:06:43,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 23:06:43,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-16 23:06:43,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 23:06:43,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 23:06:43,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 23:06:43,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 23:06:43,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 23:06:43,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 23:06:43,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 23:06:43,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 23:06:43,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 23:06:43,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 23:06:43,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 23:06:43,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 23:06:43,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-16 23:06:43,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 23:06:43,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 23:06:43,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 23:06:43,746 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-PN-NoLbe.epf [2021-10-16 23:06:43,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 23:06:43,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 23:06:43,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 23:06:43,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 23:06:43,771 INFO L138 SettingsManager]: * Use SBE=true [2021-10-16 23:06:43,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 23:06:43,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 23:06:43,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 23:06:43,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 23:06:43,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 23:06:43,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 23:06:43,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 23:06:43,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 23:06:43,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-16 23:06:43,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 23:06:43,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-16 23:06:43,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-16 23:06:43,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false [2021-10-16 23:06:43,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 23:06:43,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 23:06:43,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 23:06:43,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 23:06:43,969 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 23:06:43,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2021-10-16 23:06:44,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074e93cab/923ec006b8a64f71bb0586d6973fa19d/FLAG44e3ec628 [2021-10-16 23:06:44,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 23:06:44,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2021-10-16 23:06:44,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074e93cab/923ec006b8a64f71bb0586d6973fa19d/FLAG44e3ec628 [2021-10-16 23:06:44,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074e93cab/923ec006b8a64f71bb0586d6973fa19d [2021-10-16 23:06:44,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 23:06:44,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-16 23:06:44,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 23:06:44,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 23:06:44,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 23:06:44,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ed74eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44, skipping insertion in model container [2021-10-16 23:06:44,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 23:06:44,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 23:06:44,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 23:06:44,681 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 23:06:44,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 23:06:44,750 INFO L208 MainTranslator]: Completed translation [2021-10-16 23:06:44,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44 WrapperNode [2021-10-16 23:06:44,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 23:06:44,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 23:06:44,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 23:06:44,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 23:06:44,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 23:06:44,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 23:06:44,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 23:06:44,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 23:06:44,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 23:06:44,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 23:06:44,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 23:06:44,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 23:06:44,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (1/1) ... [2021-10-16 23:06:44,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 23:06:44,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:44,856 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) [2021-10-16 23:06:44,865 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 [2021-10-16 23:06:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 23:06:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-16 23:06:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 23:06:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-10-16 23:06:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-10-16 23:06:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 23:06:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 23:06:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 23:06:44,891 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 23:06:45,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 23:06:45,100 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 23:06:45,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:45 BoogieIcfgContainer [2021-10-16 23:06:45,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 23:06:45,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 23:06:45,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 23:06:45,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 23:06:45,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:06:44" (1/3) ... [2021-10-16 23:06:45,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b69ad4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:45, skipping insertion in model container [2021-10-16 23:06:45,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:44" (2/3) ... [2021-10-16 23:06:45,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b69ad4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:45, skipping insertion in model container [2021-10-16 23:06:45,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:45" (3/3) ... [2021-10-16 23:06:45,107 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_01-idx_rc.i [2021-10-16 23:06:45,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 23:06:45,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 23:06:45,110 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 23:06:45,126 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,126 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,126 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,126 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,127 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,128 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,129 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,130 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,132 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,133 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 23:06:45,136 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-16 23:06:45,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 23:06:45,169 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=false, mConcurrency=PETRI_NET, 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 [2021-10-16 23:06:45,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 23:06:45,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 125 flow [2021-10-16 23:06:45,196 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-10-16 23:06:45,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:45,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2021-10-16 23:06:45,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 60 transitions, 125 flow [2021-10-16 23:06:45,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 121 flow [2021-10-16 23:06:45,208 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2021-10-16 23:06:45,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:45,209 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:45,209 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:45,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash 161628909, now seen corresponding path program 1 times [2021-10-16 23:06:45,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:45,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965214984] [2021-10-16 23:06:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:45,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:45,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:45,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965214984] [2021-10-16 23:06:45,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965214984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:45,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 23:06:45,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 23:06:45,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763929497] [2021-10-16 23:06:45,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 23:06:45,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 23:06:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 23:06:45,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 60 [2021-10-16 23:06:45,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:45,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 60 [2021-10-16 23:06:45,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:45,430 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-10-16 23:06:45,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:45,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-10-16 23:06:45,432 INFO L132 encePairwiseOnDemand]: 59/60 looper letters, 0 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2021-10-16 23:06:45,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 119 flow [2021-10-16 23:06:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 23:06:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-16 23:06:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2021-10-16 23:06:45,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9916666666666667 [2021-10-16 23:06:45,441 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 119 transitions. [2021-10-16 23:06:45,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 119 transitions. [2021-10-16 23:06:45,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:45,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 119 transitions. [2021-10-16 23:06:45,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,452 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,454 INFO L186 Difference]: Start difference. First operand has 61 places, 59 transitions, 121 flow. Second operand 2 states and 119 transitions. [2021-10-16 23:06:45,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 119 flow [2021-10-16 23:06:45,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-16 23:06:45,461 INFO L242 Difference]: Finished difference. Result has 61 places, 58 transitions, 118 flow [2021-10-16 23:06:45,463 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2021-10-16 23:06:45,465 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2021-10-16 23:06:45,466 INFO L470 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 118 flow [2021-10-16 23:06:45,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:45,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:45,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 23:06:45,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash -348905268, now seen corresponding path program 1 times [2021-10-16 23:06:45,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:45,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041427058] [2021-10-16 23:06:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:45,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:45,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:45,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041427058] [2021-10-16 23:06:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041427058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:45,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 23:06:45,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 23:06:45,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409610094] [2021-10-16 23:06:45,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 23:06:45,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 23:06:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 23:06:45,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 60 [2021-10-16 23:06:45,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:45,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 60 [2021-10-16 23:06:45,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:45,553 INFO L129 PetriNetUnfolder]: 1/62 cut-off events. [2021-10-16 23:06:45,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-16 23:06:45,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2021-10-16 23:06:45,554 INFO L132 encePairwiseOnDemand]: 57/60 looper letters, 9 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2021-10-16 23:06:45,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 148 flow [2021-10-16 23:06:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 23:06:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-16 23:06:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2021-10-16 23:06:45,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-10-16 23:06:45,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2021-10-16 23:06:45,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2021-10-16 23:06:45,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:45,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2021-10-16 23:06:45,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,558 INFO L186 Difference]: Start difference. First operand has 61 places, 58 transitions, 118 flow. Second operand 3 states and 168 transitions. [2021-10-16 23:06:45,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 148 flow [2021-10-16 23:06:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-16 23:06:45,560 INFO L242 Difference]: Finished difference. Result has 64 places, 59 transitions, 130 flow [2021-10-16 23:06:45,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2021-10-16 23:06:45,560 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2021-10-16 23:06:45,560 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 130 flow [2021-10-16 23:06:45,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:45,561 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:45,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 23:06:45,561 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:45,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1365408619, now seen corresponding path program 1 times [2021-10-16 23:06:45,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:45,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602004509] [2021-10-16 23:06:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:45,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:45,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:45,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602004509] [2021-10-16 23:06:45,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602004509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:45,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957967408] [2021-10-16 23:06:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:45,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:45,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:45,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:45,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 23:06:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:45,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 23:06:45,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 23:06:45,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957967408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:45,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:06:45,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-10-16 23:06:45,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748375250] [2021-10-16 23:06:45,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 23:06:45,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 23:06:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 23:06:45,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 60 [2021-10-16 23:06:45,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:45,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 60 [2021-10-16 23:06:45,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:45,763 INFO L129 PetriNetUnfolder]: 30/191 cut-off events. [2021-10-16 23:06:45,763 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-16 23:06:45,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 191 events. 30/191 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 742 event pairs, 14 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 269. Up to 54 conditions per place. [2021-10-16 23:06:45,765 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 11 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2021-10-16 23:06:45,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 176 flow [2021-10-16 23:06:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 23:06:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-16 23:06:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2021-10-16 23:06:45,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-16 23:06:45,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2021-10-16 23:06:45,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2021-10-16 23:06:45,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:45,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2021-10-16 23:06:45,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,769 INFO L186 Difference]: Start difference. First operand has 64 places, 59 transitions, 130 flow. Second operand 3 states and 162 transitions. [2021-10-16 23:06:45,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 176 flow [2021-10-16 23:06:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-16 23:06:45,770 INFO L242 Difference]: Finished difference. Result has 67 places, 63 transitions, 166 flow [2021-10-16 23:06:45,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2021-10-16 23:06:45,771 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2021-10-16 23:06:45,771 INFO L470 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 166 flow [2021-10-16 23:06:45,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:45,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:45,771 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:45,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:45,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:45,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:45,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:45,989 INFO L82 PathProgramCache]: Analyzing trace with hash -311645053, now seen corresponding path program 1 times [2021-10-16 23:06:45,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:45,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844453570] [2021-10-16 23:06:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:45,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:46,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:46,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844453570] [2021-10-16 23:06:46,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844453570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:46,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501136720] [2021-10-16 23:06:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:46,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:46,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:46,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 23:06:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:46,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 23:06:46,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 23:06:46,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501136720] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 23:06:46,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 23:06:46,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-10-16 23:06:46,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92875300] [2021-10-16 23:06:46,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 23:06:46,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 23:06:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 23:06:46,165 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 60 [2021-10-16 23:06:46,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:46,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 60 [2021-10-16 23:06:46,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:46,196 INFO L129 PetriNetUnfolder]: 34/214 cut-off events. [2021-10-16 23:06:46,196 INFO L130 PetriNetUnfolder]: For 56/59 co-relation queries the response was YES. [2021-10-16 23:06:46,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 214 events. 34/214 cut-off events. For 56/59 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 863 event pairs, 11 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 374. Up to 56 conditions per place. [2021-10-16 23:06:46,197 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 11 selfloop transitions, 5 changer transitions 6/70 dead transitions. [2021-10-16 23:06:46,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 234 flow [2021-10-16 23:06:46,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 23:06:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-16 23:06:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2021-10-16 23:06:46,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-16 23:06:46,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2021-10-16 23:06:46,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2021-10-16 23:06:46,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:46,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2021-10-16 23:06:46,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,201 INFO L186 Difference]: Start difference. First operand has 67 places, 63 transitions, 166 flow. Second operand 3 states and 162 transitions. [2021-10-16 23:06:46,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 234 flow [2021-10-16 23:06:46,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-16 23:06:46,203 INFO L242 Difference]: Finished difference. Result has 69 places, 63 transitions, 182 flow [2021-10-16 23:06:46,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2021-10-16 23:06:46,203 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-10-16 23:06:46,203 INFO L470 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 182 flow [2021-10-16 23:06:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:46,204 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:46,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:46,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-16 23:06:46,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:46,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1665445986, now seen corresponding path program 1 times [2021-10-16 23:06:46,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:46,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250550013] [2021-10-16 23:06:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:46,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:46,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:46,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250550013] [2021-10-16 23:06:46,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250550013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:46,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632469120] [2021-10-16 23:06:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:46,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:46,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:46,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 23:06:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:46,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 23:06:46,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:46,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632469120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:46,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-16 23:06:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996704308] [2021-10-16 23:06:46,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 23:06:46,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 23:06:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 23:06:46,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:46,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:46,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:46,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:46,730 INFO L129 PetriNetUnfolder]: 10/160 cut-off events. [2021-10-16 23:06:46,730 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2021-10-16 23:06:46,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 160 events. 10/160 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 578 event pairs, 3 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 265. Up to 20 conditions per place. [2021-10-16 23:06:46,732 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 12 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2021-10-16 23:06:46,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 234 flow [2021-10-16 23:06:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 23:06:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-16 23:06:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 324 transitions. [2021-10-16 23:06:46,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-10-16 23:06:46,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 324 transitions. [2021-10-16 23:06:46,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 324 transitions. [2021-10-16 23:06:46,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:46,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 324 transitions. [2021-10-16 23:06:46,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,742 INFO L186 Difference]: Start difference. First operand has 69 places, 63 transitions, 182 flow. Second operand 6 states and 324 transitions. [2021-10-16 23:06:46,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 234 flow [2021-10-16 23:06:46,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-16 23:06:46,748 INFO L242 Difference]: Finished difference. Result has 75 places, 66 transitions, 204 flow [2021-10-16 23:06:46,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2021-10-16 23:06:46,748 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2021-10-16 23:06:46,749 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 204 flow [2021-10-16 23:06:46,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:46,749 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:46,749 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:46,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:46,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:46,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash -251925301, now seen corresponding path program 2 times [2021-10-16 23:06:46,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:46,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375293152] [2021-10-16 23:06:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:46,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:47,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:47,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375293152] [2021-10-16 23:06:47,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375293152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:47,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956022248] [2021-10-16 23:06:47,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:06:47,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:47,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:47,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:47,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 23:06:47,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 23:06:47,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 23:06:47,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:47,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956022248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:47,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:47,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-16 23:06:47,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976370190] [2021-10-16 23:06:47,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 23:06:47,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 23:06:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 23:06:47,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:47,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 204 flow. Second operand has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:47,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:47,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:47,263 INFO L129 PetriNetUnfolder]: 10/165 cut-off events. [2021-10-16 23:06:47,263 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-10-16 23:06:47,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 165 events. 10/165 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 571 event pairs, 3 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 275. Up to 20 conditions per place. [2021-10-16 23:06:47,264 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 14 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2021-10-16 23:06:47,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 278 flow [2021-10-16 23:06:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 23:06:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-16 23:06:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 482 transitions. [2021-10-16 23:06:47,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8925925925925926 [2021-10-16 23:06:47,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 482 transitions. [2021-10-16 23:06:47,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 482 transitions. [2021-10-16 23:06:47,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:47,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 482 transitions. [2021-10-16 23:06:47,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,271 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,272 INFO L186 Difference]: Start difference. First operand has 75 places, 66 transitions, 204 flow. Second operand 9 states and 482 transitions. [2021-10-16 23:06:47,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 278 flow [2021-10-16 23:06:47,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 272 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-16 23:06:47,275 INFO L242 Difference]: Finished difference. Result has 84 places, 69 transitions, 242 flow [2021-10-16 23:06:47,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2021-10-16 23:06:47,275 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2021-10-16 23:06:47,275 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 242 flow [2021-10-16 23:06:47,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:47,276 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:47,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-16 23:06:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:47,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:47,477 INFO L82 PathProgramCache]: Analyzing trace with hash -929128812, now seen corresponding path program 3 times [2021-10-16 23:06:47,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:47,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189527382] [2021-10-16 23:06:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:47,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:47,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:47,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189527382] [2021-10-16 23:06:47,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189527382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:47,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376419588] [2021-10-16 23:06:47,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:06:47,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:47,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:47,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:47,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 23:06:47,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 23:06:47,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:47,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 23:06:47,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:47,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376419588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:47,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:47,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-16 23:06:47,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978234794] [2021-10-16 23:06:47,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 23:06:47,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 23:06:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-16 23:06:47,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:47,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 242 flow. Second operand has 11 states, 11 states have (on average 53.09090909090909) internal successors, (584), 11 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:47,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:47,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:47,788 INFO L129 PetriNetUnfolder]: 10/170 cut-off events. [2021-10-16 23:06:47,789 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-10-16 23:06:47,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 170 events. 10/170 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 3 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 305. Up to 20 conditions per place. [2021-10-16 23:06:47,789 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 16 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2021-10-16 23:06:47,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 81 transitions, 338 flow [2021-10-16 23:06:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 23:06:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-16 23:06:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 640 transitions. [2021-10-16 23:06:47,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-10-16 23:06:47,791 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 640 transitions. [2021-10-16 23:06:47,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 640 transitions. [2021-10-16 23:06:47,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:47,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 640 transitions. [2021-10-16 23:06:47,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.333333333333336) internal successors, (640), 12 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,794 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,794 INFO L186 Difference]: Start difference. First operand has 84 places, 69 transitions, 242 flow. Second operand 12 states and 640 transitions. [2021-10-16 23:06:47,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 81 transitions, 338 flow [2021-10-16 23:06:47,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 81 transitions, 320 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-16 23:06:47,796 INFO L242 Difference]: Finished difference. Result has 93 places, 72 transitions, 280 flow [2021-10-16 23:06:47,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=280, PETRI_PLACES=93, PETRI_TRANSITIONS=72} [2021-10-16 23:06:47,796 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2021-10-16 23:06:47,796 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 72 transitions, 280 flow [2021-10-16 23:06:47,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.09090909090909) internal successors, (584), 11 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:47,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:47,797 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:47,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:48,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:48,014 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash -956259733, now seen corresponding path program 4 times [2021-10-16 23:06:48,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:48,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211476828] [2021-10-16 23:06:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:48,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:48,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:48,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211476828] [2021-10-16 23:06:48,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211476828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:48,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690409740] [2021-10-16 23:06:48,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 23:06:48,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:48,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:48,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:48,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 23:06:48,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 23:06:48,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:48,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 23:06:48,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:48,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690409740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:48,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:48,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-16 23:06:48,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417256758] [2021-10-16 23:06:48,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 23:06:48,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:48,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 23:06:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-16 23:06:48,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:48,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 72 transitions, 280 flow. Second operand has 13 states, 13 states have (on average 53.15384615384615) internal successors, (691), 13 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:48,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:48,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:48,388 INFO L129 PetriNetUnfolder]: 10/175 cut-off events. [2021-10-16 23:06:48,388 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-10-16 23:06:48,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 175 events. 10/175 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 3 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 335. Up to 20 conditions per place. [2021-10-16 23:06:48,389 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 18 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2021-10-16 23:06:48,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 86 transitions, 398 flow [2021-10-16 23:06:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 23:06:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-16 23:06:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2021-10-16 23:06:48,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2021-10-16 23:06:48,391 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 798 transitions. [2021-10-16 23:06:48,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 798 transitions. [2021-10-16 23:06:48,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:48,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 798 transitions. [2021-10-16 23:06:48,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 60.0) internal successors, (960), 16 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,412 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 60.0) internal successors, (960), 16 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,412 INFO L186 Difference]: Start difference. First operand has 93 places, 72 transitions, 280 flow. Second operand 15 states and 798 transitions. [2021-10-16 23:06:48,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 86 transitions, 398 flow [2021-10-16 23:06:48,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 368 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-10-16 23:06:48,414 INFO L242 Difference]: Finished difference. Result has 102 places, 75 transitions, 318 flow [2021-10-16 23:06:48,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=102, PETRI_TRANSITIONS=75} [2021-10-16 23:06:48,415 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 41 predicate places. [2021-10-16 23:06:48,415 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 75 transitions, 318 flow [2021-10-16 23:06:48,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.15384615384615) internal successors, (691), 13 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,415 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:48,415 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:48,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:48,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:48,632 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash 55209204, now seen corresponding path program 5 times [2021-10-16 23:06:48,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:48,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410726088] [2021-10-16 23:06:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:48,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:48,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:48,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410726088] [2021-10-16 23:06:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410726088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:48,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686424518] [2021-10-16 23:06:48,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 23:06:48,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:48,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:48,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 23:06:48,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-16 23:06:48,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:48,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 23:06:48,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:48,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686424518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:48,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:48,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-16 23:06:48,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206618844] [2021-10-16 23:06:48,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 23:06:48,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 23:06:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-16 23:06:48,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:48,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 75 transitions, 318 flow. Second operand has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:48,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:48,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:48,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:49,030 INFO L129 PetriNetUnfolder]: 10/180 cut-off events. [2021-10-16 23:06:49,030 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2021-10-16 23:06:49,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 180 events. 10/180 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 3 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 365. Up to 20 conditions per place. [2021-10-16 23:06:49,031 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 20 selfloop transitions, 17 changer transitions 0/91 dead transitions. [2021-10-16 23:06:49,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 91 transitions, 458 flow [2021-10-16 23:06:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 23:06:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-16 23:06:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 956 transitions. [2021-10-16 23:06:49,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8851851851851852 [2021-10-16 23:06:49,033 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 956 transitions. [2021-10-16 23:06:49,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 956 transitions. [2021-10-16 23:06:49,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:49,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 956 transitions. [2021-10-16 23:06:49,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 53.111111111111114) internal successors, (956), 18 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 60.0) internal successors, (1140), 19 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,038 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 60.0) internal successors, (1140), 19 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,038 INFO L186 Difference]: Start difference. First operand has 102 places, 75 transitions, 318 flow. Second operand 18 states and 956 transitions. [2021-10-16 23:06:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 91 transitions, 458 flow [2021-10-16 23:06:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 91 transitions, 416 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-16 23:06:49,041 INFO L242 Difference]: Finished difference. Result has 111 places, 78 transitions, 356 flow [2021-10-16 23:06:49,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=356, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2021-10-16 23:06:49,041 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2021-10-16 23:06:49,042 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 356 flow [2021-10-16 23:06:49,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:49,042 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:49,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:49,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:49,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:49,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1453928437, now seen corresponding path program 6 times [2021-10-16 23:06:49,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:49,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242057681] [2021-10-16 23:06:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:49,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:49,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:49,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242057681] [2021-10-16 23:06:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242057681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:49,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729110464] [2021-10-16 23:06:49,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 23:06:49,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:49,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:49,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 23:06:49,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-16 23:06:49,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:49,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 23:06:49,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:49,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729110464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:49,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:49,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-16 23:06:49,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092530018] [2021-10-16 23:06:49,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 23:06:49,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 23:06:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-16 23:06:49,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:49,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 356 flow. Second operand has 17 states, 17 states have (on average 53.23529411764706) internal successors, (905), 17 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:49,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:49,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:49,820 INFO L129 PetriNetUnfolder]: 10/185 cut-off events. [2021-10-16 23:06:49,820 INFO L130 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2021-10-16 23:06:49,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 185 events. 10/185 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 3 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 395. Up to 20 conditions per place. [2021-10-16 23:06:49,821 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 22 selfloop transitions, 20 changer transitions 0/96 dead transitions. [2021-10-16 23:06:49,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 96 transitions, 518 flow [2021-10-16 23:06:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 23:06:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-16 23:06:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1114 transitions. [2021-10-16 23:06:49,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2021-10-16 23:06:49,823 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1114 transitions. [2021-10-16 23:06:49,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1114 transitions. [2021-10-16 23:06:49,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:49,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1114 transitions. [2021-10-16 23:06:49,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.04761904761905) internal successors, (1114), 21 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,827 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,827 INFO L186 Difference]: Start difference. First operand has 111 places, 78 transitions, 356 flow. Second operand 21 states and 1114 transitions. [2021-10-16 23:06:49,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 96 transitions, 518 flow [2021-10-16 23:06:49,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 96 transitions, 464 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-10-16 23:06:49,830 INFO L242 Difference]: Finished difference. Result has 120 places, 81 transitions, 394 flow [2021-10-16 23:06:49,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=394, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2021-10-16 23:06:49,831 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 59 predicate places. [2021-10-16 23:06:49,831 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 394 flow [2021-10-16 23:06:49,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 53.23529411764706) internal successors, (905), 17 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:49,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:49,831 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:49,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:50,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-16 23:06:50,041 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:50,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1652431746, now seen corresponding path program 7 times [2021-10-16 23:06:50,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:50,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095391804] [2021-10-16 23:06:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:50,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:50,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:50,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095391804] [2021-10-16 23:06:50,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095391804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:50,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686855821] [2021-10-16 23:06:50,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 23:06:50,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:50,170 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:50,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 23:06:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:50,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 23:06:50,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:50,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686855821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:50,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:50,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-16 23:06:50,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34490103] [2021-10-16 23:06:50,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 23:06:50,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 23:06:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-16 23:06:50,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:50,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 394 flow. Second operand has 19 states, 19 states have (on average 53.26315789473684) internal successors, (1012), 19 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:50,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:50,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:50,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:50,631 INFO L129 PetriNetUnfolder]: 10/190 cut-off events. [2021-10-16 23:06:50,631 INFO L130 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2021-10-16 23:06:50,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 190 events. 10/190 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 571 event pairs, 3 based on Foata normal form. 1/187 useless extension candidates. Maximal degree in co-relation 425. Up to 20 conditions per place. [2021-10-16 23:06:50,632 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 24 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2021-10-16 23:06:50,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 101 transitions, 578 flow [2021-10-16 23:06:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 23:06:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-16 23:06:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1272 transitions. [2021-10-16 23:06:50,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2021-10-16 23:06:50,634 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1272 transitions. [2021-10-16 23:06:50,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1272 transitions. [2021-10-16 23:06:50,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:50,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1272 transitions. [2021-10-16 23:06:50,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.0) internal successors, (1272), 24 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:50,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 60.0) internal successors, (1500), 25 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:50,639 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 60.0) internal successors, (1500), 25 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:50,639 INFO L186 Difference]: Start difference. First operand has 120 places, 81 transitions, 394 flow. Second operand 24 states and 1272 transitions. [2021-10-16 23:06:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 101 transitions, 578 flow [2021-10-16 23:06:50,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 101 transitions, 512 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-10-16 23:06:50,642 INFO L242 Difference]: Finished difference. Result has 129 places, 84 transitions, 432 flow [2021-10-16 23:06:50,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=432, PETRI_PLACES=129, PETRI_TRANSITIONS=84} [2021-10-16 23:06:50,643 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 68 predicate places. [2021-10-16 23:06:50,643 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 84 transitions, 432 flow [2021-10-16 23:06:50,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 53.26315789473684) internal successors, (1012), 19 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:50,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:50,643 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:50,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:50,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:50,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:50,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1154036263, now seen corresponding path program 8 times [2021-10-16 23:06:50,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:50,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851474752] [2021-10-16 23:06:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:50,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:50,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:50,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851474752] [2021-10-16 23:06:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851474752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:50,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444556979] [2021-10-16 23:06:50,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 23:06:50,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:50,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:50,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:50,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 23:06:51,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 23:06:51,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:51,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 23:06:51,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:51,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444556979] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:51,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:51,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-16 23:06:51,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808547536] [2021-10-16 23:06:51,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-16 23:06:51,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-16 23:06:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-16 23:06:51,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:51,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 84 transitions, 432 flow. Second operand has 21 states, 21 states have (on average 53.285714285714285) internal successors, (1119), 21 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:51,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:51,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:51,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:51,463 INFO L129 PetriNetUnfolder]: 10/195 cut-off events. [2021-10-16 23:06:51,463 INFO L130 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2021-10-16 23:06:51,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 195 events. 10/195 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 572 event pairs, 3 based on Foata normal form. 1/192 useless extension candidates. Maximal degree in co-relation 455. Up to 20 conditions per place. [2021-10-16 23:06:51,464 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 26 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2021-10-16 23:06:51,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 106 transitions, 638 flow [2021-10-16 23:06:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-16 23:06:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-16 23:06:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1430 transitions. [2021-10-16 23:06:51,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2021-10-16 23:06:51,466 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1430 transitions. [2021-10-16 23:06:51,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1430 transitions. [2021-10-16 23:06:51,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:51,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1430 transitions. [2021-10-16 23:06:51,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.96296296296296) internal successors, (1430), 27 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:51,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 60.0) internal successors, (1680), 28 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:51,470 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 60.0) internal successors, (1680), 28 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:51,470 INFO L186 Difference]: Start difference. First operand has 129 places, 84 transitions, 432 flow. Second operand 27 states and 1430 transitions. [2021-10-16 23:06:51,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 106 transitions, 638 flow [2021-10-16 23:06:51,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 106 transitions, 560 flow, removed 19 selfloop flow, removed 20 redundant places. [2021-10-16 23:06:51,474 INFO L242 Difference]: Finished difference. Result has 138 places, 87 transitions, 470 flow [2021-10-16 23:06:51,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=470, PETRI_PLACES=138, PETRI_TRANSITIONS=87} [2021-10-16 23:06:51,474 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 77 predicate places. [2021-10-16 23:06:51,474 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 87 transitions, 470 flow [2021-10-16 23:06:51,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 53.285714285714285) internal successors, (1119), 21 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:51,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:51,475 INFO L254 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:51,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:51,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 23:06:51,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1754462690, now seen corresponding path program 9 times [2021-10-16 23:06:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:51,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291542250] [2021-10-16 23:06:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:51,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 23:06:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:51,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-16 23:06:51,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291542250] [2021-10-16 23:06:51,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291542250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:51,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781686658] [2021-10-16 23:06:51,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 23:06:51,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 23:06:51,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-16 23:06:51,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 23:06:51,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 23:06:52,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-16 23:06:52,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 23:06:52,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 23:06:52,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 23:06:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 23:06:52,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781686658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 23:06:52,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 23:06:52,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-16 23:06:52,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273354486] [2021-10-16 23:06:52,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 23:06:52,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-16 23:06:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 23:06:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-16 23:06:52,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-10-16 23:06:52,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 87 transitions, 470 flow. Second operand has 23 states, 23 states have (on average 53.30434782608695) internal successors, (1226), 23 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:52,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-16 23:06:52,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-10-16 23:06:52,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-16 23:06:52,458 INFO L129 PetriNetUnfolder]: 10/197 cut-off events. [2021-10-16 23:06:52,458 INFO L130 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2021-10-16 23:06:52,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 197 events. 10/197 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 566 event pairs, 3 based on Foata normal form. 1/194 useless extension candidates. Maximal degree in co-relation 462. Up to 20 conditions per place. [2021-10-16 23:06:52,459 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 24 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2021-10-16 23:06:52,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 108 transitions, 652 flow [2021-10-16 23:06:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-16 23:06:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-16 23:06:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1585 transitions. [2021-10-16 23:06:52,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2021-10-16 23:06:52,461 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1585 transitions. [2021-10-16 23:06:52,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1585 transitions. [2021-10-16 23:06:52,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-16 23:06:52,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1585 transitions. [2021-10-16 23:06:52,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.833333333333336) internal successors, (1585), 30 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:52,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 60.0) internal successors, (1860), 31 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:52,465 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 60.0) internal successors, (1860), 31 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:52,465 INFO L186 Difference]: Start difference. First operand has 138 places, 87 transitions, 470 flow. Second operand 30 states and 1585 transitions. [2021-10-16 23:06:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 108 transitions, 652 flow [2021-10-16 23:06:52,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 108 transitions, 562 flow, removed 22 selfloop flow, removed 23 redundant places. [2021-10-16 23:06:52,468 INFO L242 Difference]: Finished difference. Result has 148 places, 90 transitions, 496 flow [2021-10-16 23:06:52,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=496, PETRI_PLACES=148, PETRI_TRANSITIONS=90} [2021-10-16 23:06:52,469 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 87 predicate places. [2021-10-16 23:06:52,469 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 90 transitions, 496 flow [2021-10-16 23:06:52,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 53.30434782608695) internal successors, (1226), 23 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 23:06:52,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-16 23:06:52,469 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 23:06:52,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 23:06:52,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-16 23:06:52,683 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-10-16 23:06:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 23:06:52,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2023723851, now seen corresponding path program 10 times [2021-10-16 23:06:52,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-16 23:06:52,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583642] [2021-10-16 23:06:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 23:06:52,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 23:06:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 23:06:52,694 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 23:06:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 23:06:52,724 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-16 23:06:52,724 INFO L631 BasicCegarLoop]: Counterexample is feasible [2021-10-16 23:06:52,725 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE [2021-10-16 23:06:52,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE [2021-10-16 23:06:52,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 23:06:52,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE [2021-10-16 23:06:52,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 23:06:52,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 23:06:52,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 23:06:52,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:06:52 BasicIcfg [2021-10-16 23:06:52,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 23:06:52,775 INFO L168 Benchmark]: Toolchain (without parser) took 8340.76 ms. Allocated memory was 198.2 MB in the beginning and 242.2 MB in the end (delta: 44.0 MB). Free memory was 147.7 MB in the beginning and 141.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,775 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 198.2 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-16 23:06:52,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.13 ms. Allocated memory is still 198.2 MB. Free memory was 147.4 MB in the beginning and 166.3 MB in the end (delta: -18.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 198.2 MB. Free memory was 166.3 MB in the beginning and 164.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,776 INFO L168 Benchmark]: Boogie Preprocessor took 35.63 ms. Allocated memory is still 198.2 MB. Free memory was 164.8 MB in the beginning and 163.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,776 INFO L168 Benchmark]: RCFGBuilder took 268.29 ms. Allocated memory is still 198.2 MB. Free memory was 163.2 MB in the beginning and 152.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,776 INFO L168 Benchmark]: TraceAbstraction took 7671.91 ms. Allocated memory was 198.2 MB in the beginning and 242.2 MB in the end (delta: 44.0 MB). Free memory was 151.7 MB in the beginning and 141.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2021-10-16 23:06:52,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 198.2 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.13 ms. Allocated memory is still 198.2 MB. Free memory was 147.4 MB in the beginning and 166.3 MB in the end (delta: -18.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 198.2 MB. Free memory was 166.3 MB in the beginning and 164.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.63 ms. Allocated memory is still 198.2 MB. Free memory was 164.8 MB in the beginning and 163.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 268.29 ms. Allocated memory is still 198.2 MB. Free memory was 163.2 MB in the beginning and 152.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7671.91 ms. Allocated memory was 198.2 MB in the beginning and 242.2 MB in the end (delta: 44.0 MB). Free memory was 151.7 MB in the beginning and 141.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 676]: the program contains a data race the program contains a data race We found a FailurePath: [L672] 0 int data; VAL [data=0] [L673] 0 pthread_mutex_t m[10]; VAL [data=0, m={3:0}] [L681] 0 int i = 0; VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L681] 0 i++ VAL [data=0, m={3:0}] [L681] COND FALSE 0 !(i < 10) VAL [data=0, m={3:0}] [L683] 0 pthread_t id; VAL [data=0, m={3:0}] [L684] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data=0, m={3:0}] [L686] 0 data++ VAL [arg={0:0}, arg={0:0}, data=1, data++=243, data++=0, data++=241, m={3:0}] [L676] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, data++=243, data++=0, data++=241, m={3:0}] - UnprovableResult [Line: 686]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 684]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 78 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7568.7ms, OverallIterations: 14, TraceHistogramMax: 10, EmptinessCheckTime: 0.0ms, AutomataDifference: 1411.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 64 SDtfs, 223 SDslu, 99 SDs, 0 SdLazy, 518 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 260.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 776 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1097.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=13, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 91.9ms SsaConstructionTime, 327.9ms SatisfiabilityAnalysisTime, 2223.9ms InterpolantComputationTime, 1261 NumberOfCodeBlocks, 1254 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1156 ConstructedInterpolants, 0 QuantifiedInterpolants, 2122 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1130 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 2/1294 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! [2021-10-16 23:06:52,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...