/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:04:15,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:04:15,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:04:15,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:04:15,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:04:15,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:04:15,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:04:15,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:04:15,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:04:15,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:04:15,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:04:15,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:04:15,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:04:15,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:04:15,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:04:15,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:04:15,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:04:15,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:04:15,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:04:15,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:04:15,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:04:15,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:04:15,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:04:15,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:04:15,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-12 22:04:15,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:04:15,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:04:15,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:04:15,730 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-SemanticLbe.epf [2022-12-12 22:04:15,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:04:15,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:04:15,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:04:15,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:04:15,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:04:15,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:04:15,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:04:15,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:04:15,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:04:15,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:04:15,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:04:16,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:04:16,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:04:16,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:04:16,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:04:16,067 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:04:16,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2022-12-12 22:04:17,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:04:17,367 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:04:17,367 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2022-12-12 22:04:17,374 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cf725d3/1344572a9ae84dda86ee9198c034672f/FLAGebdd222c8 [2022-12-12 22:04:17,392 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cf725d3/1344572a9ae84dda86ee9198c034672f [2022-12-12 22:04:17,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:04:17,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:04:17,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:04:17,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:04:17,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:04:17,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f405fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17, skipping insertion in model container [2022-12-12 22:04:17,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:04:17,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:04:17,566 WARN L237 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_41-threadenter-no-locals_unknown_1_pos.i[1102,1115] [2022-12-12 22:04:17,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:04:17,700 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:04:17,708 WARN L237 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_41-threadenter-no-locals_unknown_1_pos.i[1102,1115] [2022-12-12 22:04:17,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:04:17,754 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:04:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17 WrapperNode [2022-12-12 22:04:17,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:04:17,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:04:17,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:04:17,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:04:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,792 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-12 22:04:17,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:04:17,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:04:17,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:04:17,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:04:17,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:04:17,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:04:17,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:04:17,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:04:17,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (1/1) ... [2022-12-12 22:04:17,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:04:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:04:17,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 22:04:17,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 22:04:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:04:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:04:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:04:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 22:04:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 22:04:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:04:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:04:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:04:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:04:17,891 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:04:18,006 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:04:18,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:04:18,087 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:04:18,092 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:04:18,093 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 22:04:18,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:04:18 BoogieIcfgContainer [2022-12-12 22:04:18,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:04:18,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:04:18,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:04:18,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:04:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:04:17" (1/3) ... [2022-12-12 22:04:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65045102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:04:18, skipping insertion in model container [2022-12-12 22:04:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:04:17" (2/3) ... [2022-12-12 22:04:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65045102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:04:18, skipping insertion in model container [2022-12-12 22:04:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:04:18" (3/3) ... [2022-12-12 22:04:18,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2022-12-12 22:04:18,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:04:18,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:04:18,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:04:18,153 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 22:04:18,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 22:04:18,216 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-12-12 22:04:18,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:04:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2022-12-12 22:04:18,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 22:04:18,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 65 flow [2022-12-12 22:04:18,223 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:04:18,246 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-12 22:04:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 65 flow [2022-12-12 22:04:18,267 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-12-12 22:04:18,268 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:04:18,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-12 22:04:18,269 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-12 22:04:18,269 INFO L226 LiptonReduction]: Number of co-enabled transitions 126 [2022-12-12 22:04:19,522 INFO L241 LiptonReduction]: Total number of compositions: 27 [2022-12-12 22:04:19,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:04:19,547 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;@3bd8a228, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:04:19,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 22:04:19,549 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-12 22:04:19,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:04:19,549 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:04:19,549 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 22:04:19,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-12 22:04:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:04:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 161610, now seen corresponding path program 1 times [2022-12-12 22:04:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:04:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538563306] [2022-12-12 22:04:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:04:19,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:04:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 22:04:19,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 22:04:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 22:04:19,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 22:04:19,649 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 22:04:19,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 22:04:19,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 22:04:19,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-12 22:04:19,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:04:19,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 22:04:19,656 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:04:19,656 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:04:19,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:04:19 BasicIcfg [2022-12-12 22:04:19,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:04:19,667 INFO L158 Benchmark]: Toolchain (without parser) took 2271.06ms. Allocated memory was 225.4MB in the beginning and 309.3MB in the end (delta: 83.9MB). Free memory was 200.9MB in the beginning and 237.9MB in the end (delta: -37.0MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,667 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 225.4MB. Free memory was 203.3MB in the beginning and 203.2MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:04:19,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.55ms. Allocated memory is still 225.4MB. Free memory was 200.9MB in the beginning and 182.6MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.57ms. Allocated memory is still 225.4MB. Free memory was 182.6MB in the beginning and 180.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,668 INFO L158 Benchmark]: Boogie Preprocessor took 24.33ms. Allocated memory is still 225.4MB. Free memory was 180.5MB in the beginning and 179.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,669 INFO L158 Benchmark]: RCFGBuilder took 281.64ms. Allocated memory is still 225.4MB. Free memory was 179.4MB in the beginning and 168.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,669 INFO L158 Benchmark]: TraceAbstraction took 1565.90ms. Allocated memory was 225.4MB in the beginning and 309.3MB in the end (delta: 83.9MB). Free memory was 167.4MB in the beginning and 237.9MB in the end (delta: -70.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2022-12-12 22:04:19,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 225.4MB. Free memory was 203.3MB in the beginning and 203.2MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 355.55ms. Allocated memory is still 225.4MB. Free memory was 200.9MB in the beginning and 182.6MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.57ms. Allocated memory is still 225.4MB. Free memory was 182.6MB in the beginning and 180.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.33ms. Allocated memory is still 225.4MB. Free memory was 180.5MB in the beginning and 179.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 281.64ms. Allocated memory is still 225.4MB. Free memory was 179.4MB in the beginning and 168.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1565.90ms. Allocated memory was 225.4MB in the beginning and 309.3MB in the end (delta: 83.9MB). Free memory was 167.4MB in the beginning and 237.9MB in the end (delta: -70.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 35 PlacesBefore, 14 PlacesAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 14 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 152, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 152, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 95, unknown conditional: 0, unknown unconditional: 95] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 304, Positive conditional cache size: 0, Positive unconditional cache size: 304, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: 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, 52 locations, 3 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: 1.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 NumberOfCodeBlocks, 3 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! [2022-12-12 22:04:19,693 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...