/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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-02 01:38:41,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-02 01:38:41,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-02 01:38:41,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-02 01:38:41,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-02 01:38:41,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-02 01:38:41,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-02 01:38:41,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-02 01:38:41,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-02 01:38:41,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-02 01:38:41,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-02 01:38:41,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-02 01:38:41,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-02 01:38:41,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-02 01:38:41,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-02 01:38:41,767 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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-02 01:38:41,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-02 01:38:41,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-02 01:38:41,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-02 01:38:41,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-02 01:38:41,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-02 01:38:41,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-02 01:38:41,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-02 01:38:41,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-02 01:38:41,794 INFO L138 SettingsManager]: * Use SBE=true [2022-03-02 01:38:41,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-02 01:38:41,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-02 01:38:41,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-02 01:38:41,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-02 01:38:41,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-02 01:38:41,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-02 01:38:41,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-02 01:38:41,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-02 01:38:41,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 01:38:41,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-02 01:38:41,796 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-02 01:38:41,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-02 01:38:41,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-02 01:38:41,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-02 01:38:41,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-02 01:38:41,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-02 01:38:41,981 INFO L275 PluginConnector]: CDTParser initialized [2022-03-02 01:38:41,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-03-02 01:38:42,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac53254d0/846d3f5b1093409ebb292d36570fd23f/FLAG1e4aca5ea [2022-03-02 01:38:42,437 INFO L306 CDTParser]: Found 1 translation units. [2022-03-02 01:38:42,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2022-03-02 01:38:42,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac53254d0/846d3f5b1093409ebb292d36570fd23f/FLAG1e4aca5ea [2022-03-02 01:38:42,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac53254d0/846d3f5b1093409ebb292d36570fd23f [2022-03-02 01:38:42,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-02 01:38:42,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-02 01:38:42,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-02 01:38:42,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-02 01:38:42,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-02 01:38:42,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f18250b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42, skipping insertion in model container [2022-03-02 01:38:42,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-02 01:38:42,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-02 01:38:42,634 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-02 01:38:42,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2022-03-02 01:38:42,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-02 01:38:42,759 INFO L203 MainTranslator]: Completed pre-run [2022-03-02 01:38:42,771 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-02 01:38:42,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2022-03-02 01:38:42,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-02 01:38:42,822 INFO L208 MainTranslator]: Completed translation [2022-03-02 01:38:42,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42 WrapperNode [2022-03-02 01:38:42,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-02 01:38:42,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-02 01:38:42,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-02 01:38:42,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-02 01:38:42,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,865 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-03-02 01:38:42,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-02 01:38:42,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-02 01:38:42,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-02 01:38:42,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-02 01:38:42,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-02 01:38:42,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-02 01:38:42,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-02 01:38:42,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-02 01:38:42,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (1/1) ... [2022-03-02 01:38:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 01:38:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 01:38:42,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-02 01:38:42,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-02 01:38:42,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-02 01:38:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-02 01:38:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-03-02 01:38:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-03-02 01:38:42,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-02 01:38:42,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-02 01:38:42,983 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-02 01:38:43,067 INFO L234 CfgBuilder]: Building ICFG [2022-03-02 01:38:43,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-02 01:38:43,195 INFO L275 CfgBuilder]: Performing block encoding [2022-03-02 01:38:43,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-02 01:38:43,200 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-02 01:38:43,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 01:38:43 BoogieIcfgContainer [2022-03-02 01:38:43,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-02 01:38:43,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-02 01:38:43,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-02 01:38:43,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-02 01:38:43,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.03 01:38:42" (1/3) ... [2022-03-02 01:38:43,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d7c95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 01:38:43, skipping insertion in model container [2022-03-02 01:38:43,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 01:38:42" (2/3) ... [2022-03-02 01:38:43,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d7c95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 01:38:43, skipping insertion in model container [2022-03-02 01:38:43,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 01:38:43" (3/3) ... [2022-03-02 01:38:43,212 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2022-03-02 01:38:43,215 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-02 01:38:43,215 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-02 01:38:43,215 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-02 01:38:43,216 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-02 01:38:43,245 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,245 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,245 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,245 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,246 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,247 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,247 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,247 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,247 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,247 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,248 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,248 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,248 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,250 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 01:38:43,253 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-02 01:38:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-02 01:38:43,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 01:38:43,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-02 01:38:43,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-02 01:38:43,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-02 01:38:43,343 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-02 01:38:43,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-02 01:38:43,393 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 62 transitions and produced 63 states. [2022-03-02 01:38:43,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1647222963, now seen corresponding path program 1 times [2022-03-02 01:38:43,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:43,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897832606] [2022-03-02 01:38:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:43,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 01:38:43,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897832606] [2022-03-02 01:38:43,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897832606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 01:38:43,582 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 01:38:43,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-02 01:38:43,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844851420] [2022-03-02 01:38:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 01:38:43,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-02 01:38:43,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 01:38:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-02 01:38:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-02 01:38:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,601 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 01:38:43,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 01:38:43,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,636 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 62 transitions and produced 63 states. [2022-03-02 01:38:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-02 01:38:43,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1450709458, now seen corresponding path program 1 times [2022-03-02 01:38:43,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:43,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012147027] [2022-03-02 01:38:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:43,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 01:38:43,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012147027] [2022-03-02 01:38:43,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012147027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 01:38:43,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 01:38:43,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-02 01:38:43,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105100367] [2022-03-02 01:38:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 01:38:43,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-02 01:38:43,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 01:38:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-02 01:38:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-02 01:38:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,740 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 01:38:43,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 01:38:43,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,760 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 74 transitions and produced 75 states. [2022-03-02 01:38:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:43,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-02 01:38:43,762 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2009823221, now seen corresponding path program 1 times [2022-03-02 01:38:43,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:43,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69502452] [2022-03-02 01:38:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:43,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 01:38:43,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69502452] [2022-03-02 01:38:43,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69502452] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 01:38:43,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371393519] [2022-03-02 01:38:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:43,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 01:38:43,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 01:38:43,852 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) [2022-03-02 01:38:43,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-02 01:38:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:43,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-02 01:38:43,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 01:38:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:44,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 01:38:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:44,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371393519] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 01:38:44,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 01:38:44,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-02 01:38:44,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815891776] [2022-03-02 01:38:44,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 01:38:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-02 01:38:44,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 01:38:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-02 01:38:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-02 01:38:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,241 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 01:38:44,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 01:38:44,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:44,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,325 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 98 transitions and produced 99 states. [2022-03-02 01:38:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:44,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-02 01:38:44,539 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,SelfDestructingSolverStorable2 [2022-03-02 01:38:44,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1859989397, now seen corresponding path program 2 times [2022-03-02 01:38:44,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:44,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755511078] [2022-03-02 01:38:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:44,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 01:38:44,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755511078] [2022-03-02 01:38:44,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755511078] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 01:38:44,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146515311] [2022-03-02 01:38:44,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-02 01:38:44,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 01:38:44,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 01:38:44,641 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) [2022-03-02 01:38:44,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-02 01:38:44,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-02 01:38:44,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 01:38:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-02 01:38:44,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 01:38:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:44,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 01:38:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:44,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146515311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 01:38:44,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 01:38:44,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-02 01:38:44,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288044067] [2022-03-02 01:38:44,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 01:38:44,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-02 01:38:44,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 01:38:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-02 01:38:44,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-02 01:38:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,988 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 01:38:44,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 01:38:44,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:44,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:44,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:44,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,139 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 146 transitions and produced 139 states. [2022-03-02 01:38:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-02 01:38:45,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-02 01:38:45,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 01:38:45,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -185566933, now seen corresponding path program 3 times [2022-03-02 01:38:45,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:45,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429509735] [2022-03-02 01:38:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 01:38:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 01:38:45,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 01:38:45,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429509735] [2022-03-02 01:38:45,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429509735] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 01:38:45,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149340511] [2022-03-02 01:38:45,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-02 01:38:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 01:38:45,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 01:38:45,518 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) [2022-03-02 01:38:45,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-02 01:38:45,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-02 01:38:45,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 01:38:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-02 01:38:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 01:38:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-03-02 01:38:45,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-02 01:38:45,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149340511] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 01:38:45,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-02 01:38:45,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-03-02 01:38:45,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847978527] [2022-03-02 01:38:45,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 01:38:45,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-02 01:38:45,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 01:38:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-02 01:38:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-02 01:38:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,809 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 01:38:45,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 01:38:45,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:45,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:45,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-02 01:38:45,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,893 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 185 transitions and produced 151 states. [2022-03-02 01:38:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 01:38:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 01:38:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-02 01:38:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 01:38:45,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-02 01:38:46,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 01:38:46,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-02 01:38:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 01:38:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 884916797, now seen corresponding path program 1 times [2022-03-02 01:38:46,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 01:38:46,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322650511] [2022-03-02 01:38:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 01:38:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 01:38:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-02 01:38:46,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-02 01:38:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-02 01:38:46,174 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-02 01:38:46,174 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-02 01:38:46,175 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-02 01:38:46,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-02 01:38:46,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-03-02 01:38:46,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-02 01:38:46,183 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-03-02 01:38:46,186 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-02 01:38:46,186 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-02 01:38:46,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.03 01:38:46 BasicIcfg [2022-03-02 01:38:46,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-02 01:38:46,235 INFO L158 Benchmark]: Toolchain (without parser) took 3766.03ms. Allocated memory was 177.2MB in the beginning and 219.2MB in the end (delta: 41.9MB). Free memory was 124.5MB in the beginning and 133.7MB in the end (delta: -9.2MB). Peak memory consumption was 33.2MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,235 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 01:38:46,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.25ms. Allocated memory is still 177.2MB. Free memory was 124.3MB in the beginning and 141.9MB in the end (delta: -17.6MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.21ms. Allocated memory is still 177.2MB. Free memory was 141.9MB in the beginning and 139.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,236 INFO L158 Benchmark]: Boogie Preprocessor took 35.58ms. Allocated memory is still 177.2MB. Free memory was 139.9MB in the beginning and 138.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,236 INFO L158 Benchmark]: RCFGBuilder took 299.08ms. Allocated memory is still 177.2MB. Free memory was 138.5MB in the beginning and 126.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,236 INFO L158 Benchmark]: TraceAbstraction took 3032.06ms. Allocated memory was 177.2MB in the beginning and 219.2MB in the end (delta: 41.9MB). Free memory was 126.1MB in the beginning and 133.7MB in the end (delta: -7.5MB). Peak memory consumption was 36.0MB. Max. memory is 8.0GB. [2022-03-02 01:38:46,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 352.25ms. Allocated memory is still 177.2MB. Free memory was 124.3MB in the beginning and 141.9MB in the end (delta: -17.6MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.21ms. Allocated memory is still 177.2MB. Free memory was 141.9MB in the beginning and 139.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.58ms. Allocated memory is still 177.2MB. Free memory was 139.9MB in the beginning and 138.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 299.08ms. Allocated memory is still 177.2MB. Free memory was 138.5MB in the beginning and 126.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3032.06ms. Allocated memory was 177.2MB in the beginning and 219.2MB in the end (delta: 41.9MB). Free memory was 126.1MB in the beginning and 133.7MB in the end (delta: -7.5MB). Peak memory consumption was 36.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t lock; VAL [lock={3:0}] [L698] 0 pthread_cond_t cond; VAL [cond={4:0}, lock={3:0}] [L699] 0 int x; VAL [cond={4:0}, lock={3:0}, x=0] [L709] 0 pthread_t t; VAL [cond={4:0}, lock={3:0}, t={7:0}, x=0] [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={4:0}, lock={3:0}, pthread_create( &t, ((void *)0), thread, ((void *)0) )=-1, t={7:0}, x=0] [L713] 0 int i = 0; VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=0] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=0] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=1, lock={3:0}, t={7:0}, x=1] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=1] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=1] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=2, lock={3:0}, t={7:0}, x=2] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=2] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=2] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=3, lock={3:0}, t={7:0}, x=3] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=3] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=3] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=4, lock={3:0}, t={7:0}, x=4] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=4] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=4] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=5, lock={3:0}, t={7:0}, x=5] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=5] [L713] COND TRUE 0 i <= 42 VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=5] [L714] 0 x = i VAL [arg={0:0}, cond={4:0}, i=6, lock={3:0}, t={7:0}, x=6] [L713] 0 i++ VAL [arg={0:0}, cond={4:0}, i=7, lock={3:0}, t={7:0}, x=6] [L704] 1 !(x == 42) ? reach_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=6] [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=6] - UnprovableResult [Line: 712]: 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, 86 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 638 NumberOfCodeBlocks, 613 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 954 SizeOfPredicates, 12 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2022-03-02 01:38:46,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-02 01:38:46,485 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...