/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:20:50,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:20:50,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:20:50,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:20:50,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:20:50,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:20:50,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:20:50,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:20:50,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:20:50,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:20:50,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:20:50,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:20:50,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:20:50,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:20:50,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:20:50,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:20:50,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:20:50,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:20:50,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:20:50,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:20:50,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:20:50,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:20:50,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:20:50,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:20:50,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:20:50,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 03:20:50,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 03:20:50,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 03:20:50,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 03:20:50,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 03:20:50,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 03:20:50,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 03:20:50,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 03:20:50,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:20:50,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:20:50,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:20:50,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:20:50,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:20:50,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:20:50,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:20:50,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:20:50,212 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:20:50,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:20:50,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:20:50,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:20:50,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:20:50,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:20:50,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:20:50,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:20:50,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:20:50,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:20:50,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:20:50,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:20:50,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:20:50,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:20:50,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:20:50,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:20:50,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:20:50,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:20:50,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:20:50,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:20:50,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:20:50,218 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:20:50,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:20:50,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:20:50,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:20:50,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 03:20:50,571 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 03:20:50,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2021-03-26 03:20:50,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456e7173b/288523520e084704b7b482d2837f5dce/FLAGd991c11a0 [2021-03-26 03:20:51,105 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 03:20:51,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2021-03-26 03:20:51,105 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 03:20:51,105 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 03:20:51,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456e7173b/288523520e084704b7b482d2837f5dce/FLAGd991c11a0 [2021-03-26 03:20:51,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456e7173b/288523520e084704b7b482d2837f5dce [2021-03-26 03:20:51,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:20:51,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 03:20:51,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 03:20:51,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 03:20:51,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 03:20:51,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4563edc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51, skipping insertion in model container [2021-03-26 03:20:51,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 03:20:51,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 03:20:51,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:20:51,835 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 03:20:51,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:20:51,871 INFO L208 MainTranslator]: Completed translation [2021-03-26 03:20:51,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51 WrapperNode [2021-03-26 03:20:51,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 03:20:51,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:20:51,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:20:51,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:20:51,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:20:51,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:20:51,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:20:51,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:20:51,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (1/1) ... [2021-03-26 03:20:51,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:20:51,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:20:51,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:20:51,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:20:51,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (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 [2021-03-26 03:20:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-03-26 03:20:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-26 03:20:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:20:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:20:51,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 03:20:51,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 03:20:52,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:20:52,199 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-26 03:20:52,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:20:52 BoogieIcfgContainer [2021-03-26 03:20:52,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:20:52,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:20:52,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:20:52,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:20:52,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 03:20:51" (1/3) ... [2021-03-26 03:20:52,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d060153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:20:52, skipping insertion in model container [2021-03-26 03:20:52,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:20:51" (2/3) ... [2021-03-26 03:20:52,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d060153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:20:52, skipping insertion in model container [2021-03-26 03:20:52,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:20:52" (3/3) ... [2021-03-26 03:20:52,209 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex02-unsafe.c [2021-03-26 03:20:52,215 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:20:52,218 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:20:52,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-03-26 03:20:52,253 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:20:52,253 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:20:52,254 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:20:52,254 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:20:52,254 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:20:52,254 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:20:52,254 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:20:52,254 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:20:52,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 7 places, 6 transitions, 12 flow [2021-03-26 03:20:52,276 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 03:20:52,276 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:20:52,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 03:20:52,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 7 places, 6 transitions, 12 flow [2021-03-26 03:20:52,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 4 places, 3 transitions, 6 flow [2021-03-26 03:20:52,283 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:20:52,301 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 4 places, 3 transitions, 6 flow [2021-03-26 03:20:52,306 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 4 places, 3 transitions, 6 flow [2021-03-26 03:20:52,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 4 places, 3 transitions, 6 flow [2021-03-26 03:20:52,307 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-26 03:20:52,308 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:20:52,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 03:20:52,309 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:20:52,771 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2021-03-26 03:20:52,912 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-26 03:20:53,121 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2021-03-26 03:20:53,582 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:20:53,582 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 03:20:53,585 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1303 [2021-03-26 03:20:53,591 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:20:53,591 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:20:53,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:20:53,592 INFO L263 CegarLoopForPetriNet]: trace histogram [1] [2021-03-26 03:20:53,592 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:20:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:20:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 40, now seen corresponding path program 1 times [2021-03-26 03:20:53,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:20:53,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567078675] [2021-03-26 03:20:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:20:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:20:53,677 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:20:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:20:53,691 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:20:53,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:20:53,705 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:20:53,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:20:53,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:20:53 BoogieIcfgContainer [2021-03-26 03:20:53,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:20:53,720 INFO L168 Benchmark]: Toolchain (without parser) took 2113.68 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 233.8 MB in the beginning and 334.2 MB in the end (delta: -100.3 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:53,721 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 90.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:53,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.51 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 233.4 MB in the beginning and 372.3 MB in the end (delta: -138.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:53,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.67 ms. Allocated memory is still 390.1 MB. Free memory was 372.3 MB in the beginning and 370.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:53,722 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 390.1 MB. Free memory was 370.8 MB in the beginning and 369.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:20:53,723 INFO L168 Benchmark]: RCFGBuilder took 267.17 ms. Allocated memory is still 390.1 MB. Free memory was 369.8 MB in the beginning and 358.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:53,723 INFO L168 Benchmark]: TraceAbstraction took 1516.00 ms. Allocated memory is still 390.1 MB. Free memory was 358.7 MB in the beginning and 334.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:20:53,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 90.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 264.51 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 233.4 MB in the beginning and 372.3 MB in the end (delta: -138.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.67 ms. Allocated memory is still 390.1 MB. Free memory was 372.3 MB in the beginning and 370.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 390.1 MB. Free memory was 370.8 MB in the beginning and 369.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 267.17 ms. Allocated memory is still 390.1 MB. Free memory was 369.8 MB in the beginning and 358.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1516.00 ms. Allocated memory is still 390.1 MB. Free memory was 358.7 MB in the beginning and 334.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1276.3ms, 4 PlacesBefore, 2 PlacesAfterwards, 3 TransitionsBefore, 1 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: 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: 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 - CounterExampleResult [Line: 45]: assertion can be violated assertion can be violated We found a FailurePath: [L35] pthread_mutex_t mutex; [L42] int ret = pthread_mutex_unlock(&mutex); [L45] CodeAnnotStmt[Assertion] VAL [mutex={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1457.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1335.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred 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: 3.4ms SsaConstructionTime, 24.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 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...