/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:56:06,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:56:06,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:56:06,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:56:06,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:56:06,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:56:06,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:56:06,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:56:06,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:56:06,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:56:06,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:56:06,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:56:06,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:56:06,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:56:06,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:56:06,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:56:06,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:56:06,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:56:06,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:56:06,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:56:06,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:56:06,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:56:06,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:56:06,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:56:06,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 18:56:06,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:56:06,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:56:06,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:56:06,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:56:06,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:56:06,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:56:06,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:56:06,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:56:06,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:56:06,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:56:06,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:56:06,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:56:06,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:56:06,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:56:06,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:56:06,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:56:06,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:56:06,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:56:06,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:56:06,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:56:06,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:56:06,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:56:06,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:56:06,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:56:06,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:56:06,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:56:06,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:56:06,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:56:06,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:56:06,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:56:06,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:56:06,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:56:06,145 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:56:06,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:56:06,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:56:06,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:56:06,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:56:06,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:56:06,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:56:06,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:56:06,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:56:06,445 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:56:06,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-09 18:56:06,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df006afae/f3a99b5e6ca74dbfa233d70d4a2ee27a/FLAG481ec0592 [2020-10-09 18:56:07,030 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:56:07,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-09 18:56:07,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df006afae/f3a99b5e6ca74dbfa233d70d4a2ee27a/FLAG481ec0592 [2020-10-09 18:56:07,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df006afae/f3a99b5e6ca74dbfa233d70d4a2ee27a [2020-10-09 18:56:07,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:56:07,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:56:07,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:56:07,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:56:07,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:56:07,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:56:07" (1/1) ... [2020-10-09 18:56:07,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1ed208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:07, skipping insertion in model container [2020-10-09 18:56:07,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:56:07" (1/1) ... [2020-10-09 18:56:07,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:56:07,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:56:07,705 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-09 18:56:08,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:56:08,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:56:08,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-09 18:56:08,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:56:08,168 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:56:08,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08 WrapperNode [2020-10-09 18:56:08,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:56:08,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:56:08,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:56:08,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:56:08,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:56:08,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:56:08,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:56:08,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:56:08,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... [2020-10-09 18:56:08,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:56:08,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:56:08,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:56:08,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:56:08,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:56:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 18:56:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:56:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 18:56:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:56:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 18:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-09 18:56:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-09 18:56:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:56:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:56:08,329 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:56:08,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:56:08,631 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-09 18:56:08,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:56:08 BoogieIcfgContainer [2020-10-09 18:56:08,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:56:08,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:56:08,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:56:08,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:56:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:56:07" (1/3) ... [2020-10-09 18:56:08,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b915308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:56:08, skipping insertion in model container [2020-10-09 18:56:08,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:56:08" (2/3) ... [2020-10-09 18:56:08,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b915308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:56:08, skipping insertion in model container [2020-10-09 18:56:08,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:56:08" (3/3) ... [2020-10-09 18:56:08,665 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2020-10-09 18:56:08,682 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:56:08,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:56:08,692 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:56:08,735 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,735 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,735 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,736 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,738 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,738 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,738 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,739 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,739 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,740 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,749 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,749 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:56:08,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 18:56:08,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:56:08,804 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:56:08,805 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:56:08,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:56:08,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:56:08,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:56:08,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:56:08,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:56:08,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 118 flow [2020-10-09 18:56:08,853 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2020-10-09 18:56:08,853 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-09 18:56:08,857 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2020-10-09 18:56:08,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 118 flow [2020-10-09 18:56:08,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 48 transitions, 99 flow [2020-10-09 18:56:08,880 INFO L129 PetriNetUnfolder]: 3/45 cut-off events. [2020-10-09 18:56:08,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:56:08,881 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:56:08,882 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:56:08,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:56:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:56:08,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1542213810, now seen corresponding path program 1 times [2020-10-09 18:56:08,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:56:08,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563443256] [2020-10-09 18:56:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:56:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:56:09,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:56:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:56:09,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:56:09,085 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-10-09 18:56:09,086 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 18:56:09,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:56:09,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:56:09 BasicIcfg [2020-10-09 18:56:09,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:56:09,373 INFO L168 Benchmark]: Toolchain (without parser) took 1983.34 ms. Allocated memory was 249.6 MB in the beginning and 307.2 MB in the end (delta: 57.7 MB). Free memory was 204.8 MB in the beginning and 201.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 61.0 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,375 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:56:09,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.19 ms. Allocated memory was 249.6 MB in the beginning and 307.2 MB in the end (delta: 57.7 MB). Free memory was 204.8 MB in the beginning and 263.2 MB in the end (delta: -58.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.05 ms. Allocated memory is still 307.2 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,379 INFO L168 Benchmark]: Boogie Preprocessor took 35.02 ms. Allocated memory is still 307.2 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,381 INFO L168 Benchmark]: RCFGBuilder took 380.47 ms. Allocated memory is still 307.2 MB. Free memory was 258.2 MB in the beginning and 236.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,382 INFO L168 Benchmark]: TraceAbstraction took 727.67 ms. Allocated memory is still 307.2 MB. Free memory was 236.3 MB in the beginning and 201.4 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 14.2 GB. [2020-10-09 18:56:09,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 779.19 ms. Allocated memory was 249.6 MB in the beginning and 307.2 MB in the end (delta: 57.7 MB). Free memory was 204.8 MB in the beginning and 263.2 MB in the end (delta: -58.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.05 ms. Allocated memory is still 307.2 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 35.02 ms. Allocated memory is still 307.2 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 380.47 ms. Allocated memory is still 307.2 MB. Free memory was 258.2 MB in the beginning and 236.3 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 727.67 ms. Allocated memory is still 307.2 MB. Free memory was 236.3 MB in the beginning and 201.4 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 pthread_mutex_t lock; VAL [lock={2:0}] [L687] 0 pthread_cond_t cond; VAL [cond={50:0}, lock={2:0}] [L688] 0 int x; VAL [cond={50:0}, lock={2:0}, x=0] [L698] 0 pthread_t t; VAL [cond={50:0}, lock={2:0}, x=0] [L701] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={50:0}, lock={2:0}, x=0] [L693] 1 !(x == 42) ? __VERIFIER_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={50:0}, lock={2:0}, x=0] [L693] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, cond={50:0}, lock={2:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 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...