/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-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 12:27:21,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 12:27:21,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 12:27:21,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 12:27:21,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 12:27:21,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 12:27:21,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 12:27:21,963 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-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-14 12:27:21,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 12:27:21,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 12:27:21,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 12:27:21,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 12:27:22,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 12:27:22,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 12:27:22,002 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 12:27:22,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 12:27:22,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 12:27:22,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 12:27:22,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 12:27:22,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 12:27:22,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 12:27:22,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 12:27:22,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 12:27:22,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 12:27:22,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 12:27:22,006 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-14 12:27:22,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 12:27:22,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 12:27:22,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 12:27:22,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 12:27:22,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-14 12:27:22,344 INFO L275 PluginConnector]: CDTParser initialized [2021-07-14 12:27:22,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-07-14 12:27:22,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a1e27f9/abd1a70647754caa917f7da3fb213c53/FLAG1108d64e9 [2021-07-14 12:27:22,926 INFO L306 CDTParser]: Found 1 translation units. [2021-07-14 12:27:22,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-07-14 12:27:22,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a1e27f9/abd1a70647754caa917f7da3fb213c53/FLAG1108d64e9 [2021-07-14 12:27:23,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a1e27f9/abd1a70647754caa917f7da3fb213c53 [2021-07-14 12:27:23,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 12:27:23,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-14 12:27:23,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-14 12:27:23,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-14 12:27:23,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-14 12:27:23,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:23,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bca167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23, skipping insertion in model container [2021-07-14 12:27:23,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:23,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-14 12:27:23,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-14 12:27:23,611 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-14 12:27:23,833 WARN L224 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] [2021-07-14 12:27:23,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 12:27:23,856 INFO L203 MainTranslator]: Completed pre-run [2021-07-14 12:27:23,868 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-14 12:27:23,891 WARN L224 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] [2021-07-14 12:27:23,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 12:27:23,945 INFO L208 MainTranslator]: Completed translation [2021-07-14 12:27:23,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23 WrapperNode [2021-07-14 12:27:23,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-14 12:27:23,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 12:27:23,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 12:27:23,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 12:27:23,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:23,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 12:27:24,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 12:27:24,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 12:27:24,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 12:27:24,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... [2021-07-14 12:27:24,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 12:27:24,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 12:27:24,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 12:27:24,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 12:27:24,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-14 12:27:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-14 12:27:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-07-14 12:27:24,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-07-14 12:27:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 12:27:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 12:27:24,124 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 12:27:24,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 12:27:24,429 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-14 12:27:24,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:27:24 BoogieIcfgContainer [2021-07-14 12:27:24,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 12:27:24,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 12:27:24,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 12:27:24,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 12:27:24,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:27:23" (1/3) ... [2021-07-14 12:27:24,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1681855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:27:24, skipping insertion in model container [2021-07-14 12:27:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:27:23" (2/3) ... [2021-07-14 12:27:24,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1681855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:27:24, skipping insertion in model container [2021-07-14 12:27:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:27:24" (3/3) ... [2021-07-14 12:27:24,436 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-07-14 12:27:24,440 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 12:27:24,440 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 12:27:24,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 12:27:24,441 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 12:27:24,460 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,461 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,462 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,462 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,462 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,462 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,462 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,463 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,463 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,463 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,463 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,463 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,464 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,464 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,465 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,466 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,466 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,466 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,466 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,466 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 12:27:24,473 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-07-14 12:27:24,495 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 12:27:24,562 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 12:27:24,562 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 12:27:24,562 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 12:27:24,562 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 12:27:24,562 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 12:27:24,562 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 12:27:24,563 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 12:27:24,563 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == threadThread1of1ForFork0======== [2021-07-14 12:27:24,680 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 12:27:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 12:27:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1260813384, now seen corresponding path program 1 times [2021-07-14 12:27:24,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 12:27:24,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949169850] [2021-07-14 12:27:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 12:27:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-14 12:27:24,864 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-14 12:27:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-14 12:27:24,895 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-14 12:27:24,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-14 12:27:24,918 INFO L609 BasicCegarLoop]: Counterexample might be feasible [2021-07-14 12:27:24,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 12:27:24,925 INFO L301 ceAbstractionStarter]: Result for error location threadThread1of1ForFork0 was UNSAFE (1/2) [2021-07-14 12:27:24,927 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 12:27:24,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:27:24 BasicIcfg [2021-07-14 12:27:24,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 12:27:24,956 INFO L168 Benchmark]: Toolchain (without parser) took 1512.21 ms. Allocated memory is still 190.8 MB. Free memory was 153.3 MB in the beginning and 110.1 MB in the end (delta: 43.2 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,956 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 190.8 MB. Free memory is still 171.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 12:27:24,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.89 ms. Allocated memory is still 190.8 MB. Free memory was 153.0 MB in the beginning and 164.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.37 ms. Allocated memory is still 190.8 MB. Free memory was 164.7 MB in the beginning and 162.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,958 INFO L168 Benchmark]: Boogie Preprocessor took 43.13 ms. Allocated memory is still 190.8 MB. Free memory was 162.6 MB in the beginning and 161.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,958 INFO L168 Benchmark]: RCFGBuilder took 383.50 ms. Allocated memory is still 190.8 MB. Free memory was 161.0 MB in the beginning and 138.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,959 INFO L168 Benchmark]: TraceAbstraction took 522.90 ms. Allocated memory is still 190.8 MB. Free memory was 138.4 MB in the beginning and 110.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-07-14 12:27:24,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 190.8 MB. Free memory is still 171.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 498.89 ms. Allocated memory is still 190.8 MB. Free memory was 153.0 MB in the beginning and 164.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.37 ms. Allocated memory is still 190.8 MB. Free memory was 164.7 MB in the beginning and 162.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.13 ms. Allocated memory is still 190.8 MB. Free memory was 162.6 MB in the beginning and 161.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 383.50 ms. Allocated memory is still 190.8 MB. Free memory was 161.0 MB in the beginning and 138.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 522.90 ms. Allocated memory is still 190.8 MB. Free memory was 138.4 MB in the beginning and 110.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 8, positive unconditional: 194, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 8, positive unconditional: 194, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 0, positive unconditional: 202, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 121, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 121, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 204, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 121, unknown conditional: 0, unknown unconditional: 121] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 ], Maximal queried relation: 0, Independence queries for same thread: 0 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 66, Number of persistent set computation: 46, Number of trivial persistent sets: 39, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 8, positive unconditional: 194, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 8, positive unconditional: 194, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 204, positive: 202, positive conditional: 0, positive unconditional: 202, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 121, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 121, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 204, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 121, unknown conditional: 0, unknown unconditional: 121] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 ], Maximal queried relation: 0, Independence queries for same thread: 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={11:0}] [L698] 0 pthread_cond_t cond; VAL [cond={13:0}, lock={11:0}] [L699] 0 int x; VAL [cond={13:0}, lock={11:0}, x=0] [L709] 0 pthread_t t; VAL [cond={13:0}, lock={11:0}, x=0] [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={13:0}, lock={11:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={13:0}, lock={11:0}, x=0] [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={13:0}, lock={11:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: threadThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 417.4ms, OverallIterations: 1, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 102.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 10.9ms SsaConstructionTime, 82.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...