/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:10:23,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:10:23,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:10:23,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:10:23,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:10:23,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:10:23,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:10:23,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:10:23,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:10:23,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:10:23,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:10:23,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:10:23,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:10:23,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:10:23,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:10:23,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:10:23,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:10:23,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:10:23,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:10:23,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:10:23,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:10:23,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:10:23,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:10:23,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:10:23,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 02:10:23,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:10:23,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:10:23,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:10:23,942 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-VariableLbe.epf [2023-01-28 02:10:23,965 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:10:23,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:10:23,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:10:23,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:10:23,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:10:23,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:10:23,967 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:10:23,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:10:23,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:10:23,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:10:23,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:10:23,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:10:23,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:10:23,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:10:23,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:10:23,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:10:23,970 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:10:24,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:10:24,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:10:24,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:10:24,151 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:10:24,151 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:10:24,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-01-28 02:10:25,128 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:10:25,343 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:10:25,343 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-01-28 02:10:25,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da24b297d/244dc7cca7784f679d8c92f8ae06e9ed/FLAG27d0e004c [2023-01-28 02:10:25,370 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da24b297d/244dc7cca7784f679d8c92f8ae06e9ed [2023-01-28 02:10:25,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:10:25,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:10:25,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:10:25,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:10:25,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:10:25,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a57b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25, skipping insertion in model container [2023-01-28 02:10:25,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:10:25,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:10:25,526 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2023-01-28 02:10:25,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:10:25,612 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:10:25,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2023-01-28 02:10:25,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:10:25,689 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:10:25,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25 WrapperNode [2023-01-28 02:10:25,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:10:25,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:10:25,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:10:25,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:10:25,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,735 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-01-28 02:10:25,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:10:25,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:10:25,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:10:25,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:10:25,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:10:25,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:10:25,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:10:25,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:10:25,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (1/1) ... [2023-01-28 02:10:25,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:10:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:10:25,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:10:25,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 02:10:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:10:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:10:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:10:25,825 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:10:25,974 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:10:25,975 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:10:26,117 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:10:26,121 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:10:26,122 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 02:10:26,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:10:26 BoogieIcfgContainer [2023-01-28 02:10:26,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:10:26,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:10:26,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:10:26,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:10:26,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:10:25" (1/3) ... [2023-01-28 02:10:26,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0721c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:10:26, skipping insertion in model container [2023-01-28 02:10:26,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:10:25" (2/3) ... [2023-01-28 02:10:26,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0721c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:10:26, skipping insertion in model container [2023-01-28 02:10:26,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:10:26" (3/3) ... [2023-01-28 02:10:26,128 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-01-28 02:10:26,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:10:26,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:10:26,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:10:26,168 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 02:10:26,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 151 flow [2023-01-28 02:10:26,217 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-01-28 02:10:26,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:10:26,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-01-28 02:10:26,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 151 flow [2023-01-28 02:10:26,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 127 flow [2023-01-28 02:10:26,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:10:26,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-28 02:10:26,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-28 02:10:26,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 127 flow [2023-01-28 02:10:26,245 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2023-01-28 02:10:26,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:10:26,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-01-28 02:10:26,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-01-28 02:10:28,039 INFO L134 LiptonReduction]: Checked pairs total: 1016 [2023-01-28 02:10:28,039 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-01-28 02:10:28,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:10:28,053 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28a1cf2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:10:28,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 02:10:28,055 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 02:10:28,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:10:28,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:10:28,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 02:10:28,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:10:28,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:10:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash 235099129, now seen corresponding path program 1 times [2023-01-28 02:10:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:10:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183077021] [2023-01-28 02:10:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:10:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:10:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:10:28,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:10:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:10:28,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:10:28,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:10:28,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 02:10:28,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 02:10:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:10:28,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:10:28,213 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:10:28,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:10:28,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:10:28 BasicIcfg [2023-01-28 02:10:28,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:10:28,227 INFO L158 Benchmark]: Toolchain (without parser) took 2853.78ms. Allocated memory is still 327.2MB. Free memory was 270.5MB in the beginning and 238.4MB in the end (delta: 32.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,228 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:10:28,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.23ms. Allocated memory is still 327.2MB. Free memory was 270.3MB in the beginning and 295.5MB in the end (delta: -25.1MB). Peak memory consumption was 16.4MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.96ms. Allocated memory is still 327.2MB. Free memory was 295.5MB in the beginning and 293.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,229 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 327.2MB. Free memory was 293.4MB in the beginning and 291.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,229 INFO L158 Benchmark]: RCFGBuilder took 358.51ms. Allocated memory is still 327.2MB. Free memory was 291.7MB in the beginning and 279.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,229 INFO L158 Benchmark]: TraceAbstraction took 2101.39ms. Allocated memory is still 327.2MB. Free memory was 278.1MB in the beginning and 238.4MB in the end (delta: 39.7MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-01-28 02:10:28,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 315.23ms. Allocated memory is still 327.2MB. Free memory was 270.3MB in the beginning and 295.5MB in the end (delta: -25.1MB). Peak memory consumption was 16.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.96ms. Allocated memory is still 327.2MB. Free memory was 295.5MB in the beginning and 293.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 327.2MB. Free memory was 293.4MB in the beginning and 291.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 358.51ms. Allocated memory is still 327.2MB. Free memory was 291.7MB in the beginning and 279.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2101.39ms. Allocated memory is still 327.2MB. Free memory was 278.1MB in the beginning and 238.4MB in the end (delta: 39.7MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 65 PlacesBefore, 17 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 1016 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 449, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 195, independent: 170, independent conditional: 0, independent unconditional: 170, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 449, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 195, unknown conditional: 0, unknown unconditional: 195] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=0] [L700] COND FALSE 0 !(\read(r)) [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(t == 17) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=42] - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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! [2023-01-28 02:10:28,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...