./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:55:21,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:55:21,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:55:21,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:55:21,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:55:21,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:55:21,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:55:21,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:55:21,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:55:21,751 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:55:21,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:55:21,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:55:21,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:55:21,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:55:21,752 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:55:21,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:55:21,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:55:21,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:55:21,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:55:21,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:55:21,754 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:55:21,754 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:55:21,755 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:55:21,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:55:21,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:55:21,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:55:21,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:55:21,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:55:21,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:55:21,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:55:21,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:55:21,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:55:21,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:55:21,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:55:21,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:55:21,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:55:21,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:55:21,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:55:21,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:55:21,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:55:21,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:55:21,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:55:21,759 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2024-10-11 19:55:21,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:55:21,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:55:21,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:55:21,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:55:21,999 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:55:22,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2024-10-11 19:55:23,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:55:23,524 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:55:23,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2024-10-11 19:55:23,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/89e0c635a/3541ef853e764e96a855dec828df452a/FLAG6d518b1d5 [2024-10-11 19:55:23,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/89e0c635a/3541ef853e764e96a855dec828df452a [2024-10-11 19:55:23,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:55:23,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:55:23,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:55:23,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:55:23,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:55:23,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecf3ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23, skipping insertion in model container [2024-10-11 19:55:23,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:55:23,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:55:23,799 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:55:23,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:55:23,846 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:55:23,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23 WrapperNode [2024-10-11 19:55:23,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:55:23,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:55:23,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:55:23,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:55:23,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,887 INFO L138 Inliner]: procedures = 23, calls = 61, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 224 [2024-10-11 19:55:23,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:55:23,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:55:23,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:55:23,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:55:23,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,923 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:55:23,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:55:23,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:55:23,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:55:23,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:55:23,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (1/1) ... [2024-10-11 19:55:23,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:55:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:23,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:55:23,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:55:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:55:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:55:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:55:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:55:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:55:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:55:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 19:55:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-11 19:55:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:55:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:55:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:55:24,022 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:55:24,125 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:55:24,127 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:55:24,410 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:55:24,410 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:55:24,600 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:55:24,600 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 19:55:24,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:55:24 BoogieIcfgContainer [2024-10-11 19:55:24,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:55:24,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:55:24,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:55:24,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:55:24,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:55:23" (1/3) ... [2024-10-11 19:55:24,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a593b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:55:24, skipping insertion in model container [2024-10-11 19:55:24,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:23" (2/3) ... [2024-10-11 19:55:24,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a593b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:55:24, skipping insertion in model container [2024-10-11 19:55:24,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:55:24" (3/3) ... [2024-10-11 19:55:24,609 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2024-10-11 19:55:24,621 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:55:24,621 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:55:24,621 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:55:24,680 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-11 19:55:24,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 57 transitions, 149 flow [2024-10-11 19:55:24,756 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2024-10-11 19:55:24,757 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:55:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 52 events. 0/52 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-11 19:55:24,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 57 transitions, 149 flow [2024-10-11 19:55:24,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 51 transitions, 132 flow [2024-10-11 19:55:24,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:55:24,775 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3739fe48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:55:24,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 19:55:24,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:55:24,796 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-10-11 19:55:24,796 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:55:24,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:24,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:24,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:55:24,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash -217554165, now seen corresponding path program 1 times [2024-10-11 19:55:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110430948] [2024-10-11 19:55:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110430948] [2024-10-11 19:55:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110430948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:55:26,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:55:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:55:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876925473] [2024-10-11 19:55:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:55:26,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:55:26,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:55:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:55:26,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-10-11 19:55:26,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:26,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:26,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-10-11 19:55:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:34,771 INFO L124 PetriNetUnfolderBase]: 127801/164288 cut-off events. [2024-10-11 19:55:34,771 INFO L125 PetriNetUnfolderBase]: For 9324/9324 co-relation queries the response was YES. [2024-10-11 19:55:35,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336778 conditions, 164288 events. 127801/164288 cut-off events. For 9324/9324 co-relation queries the response was YES. Maximal size of possible extension queue 4493. Compared 974559 event pairs, 78492 based on Foata normal form. 2/164081 useless extension candidates. Maximal degree in co-relation 308623. Up to 92016 conditions per place. [2024-10-11 19:55:35,598 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 93 selfloop transitions, 6 changer transitions 8/113 dead transitions. [2024-10-11 19:55:35,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 506 flow [2024-10-11 19:55:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:55:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:55:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-10-11 19:55:35,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6885964912280702 [2024-10-11 19:55:35,611 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 132 flow. Second operand 4 states and 157 transitions. [2024-10-11 19:55:35,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 506 flow [2024-10-11 19:55:36,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 462 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-11 19:55:36,456 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 147 flow [2024-10-11 19:55:36,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-11 19:55:36,462 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-10-11 19:55:36,463 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 147 flow [2024-10-11 19:55:36,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:36,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:36,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:36,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:55:36,465 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:55:36,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:36,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1834087471, now seen corresponding path program 2 times [2024-10-11 19:55:36,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:36,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174190205] [2024-10-11 19:55:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174190205] [2024-10-11 19:55:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174190205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:55:36,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:55:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:55:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684081080] [2024-10-11 19:55:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:55:36,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:55:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:55:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:55:36,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-10-11 19:55:36,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:36,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:36,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-10-11 19:55:36,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:45,075 INFO L124 PetriNetUnfolderBase]: 114412/160587 cut-off events. [2024-10-11 19:55:45,075 INFO L125 PetriNetUnfolderBase]: For 4040/4040 co-relation queries the response was YES. [2024-10-11 19:55:45,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327191 conditions, 160587 events. 114412/160587 cut-off events. For 4040/4040 co-relation queries the response was YES. Maximal size of possible extension queue 6582. Compared 1239632 event pairs, 24211 based on Foata normal form. 1032/155082 useless extension candidates. Maximal degree in co-relation 115453. Up to 46778 conditions per place. [2024-10-11 19:55:46,172 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 123 selfloop transitions, 31 changer transitions 0/170 dead transitions. [2024-10-11 19:55:46,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 170 transitions, 716 flow [2024-10-11 19:55:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:55:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:55:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2024-10-11 19:55:46,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7690058479532164 [2024-10-11 19:55:46,176 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 147 flow. Second operand 6 states and 263 transitions. [2024-10-11 19:55:46,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 170 transitions, 716 flow [2024-10-11 19:55:46,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 170 transitions, 703 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 19:55:46,319 INFO L231 Difference]: Finished difference. Result has 65 places, 83 transitions, 333 flow [2024-10-11 19:55:46,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=65, PETRI_TRANSITIONS=83} [2024-10-11 19:55:46,321 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -2 predicate places. [2024-10-11 19:55:46,321 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 83 transitions, 333 flow [2024-10-11 19:55:46,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:46,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:46,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:46,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:55:46,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:55:46,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1191322615, now seen corresponding path program 3 times [2024-10-11 19:55:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213768751] [2024-10-11 19:55:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:46,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213768751] [2024-10-11 19:55:46,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213768751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:55:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:55:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:55:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867028034] [2024-10-11 19:55:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:55:46,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:55:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:55:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:55:46,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-10-11 19:55:46,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 83 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-10-11 19:55:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:00,102 INFO L124 PetriNetUnfolderBase]: 166600/235350 cut-off events. [2024-10-11 19:56:00,106 INFO L125 PetriNetUnfolderBase]: For 160123/161761 co-relation queries the response was YES. [2024-10-11 19:56:00,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620609 conditions, 235350 events. 166600/235350 cut-off events. For 160123/161761 co-relation queries the response was YES. Maximal size of possible extension queue 10017. Compared 1884579 event pairs, 38737 based on Foata normal form. 1990/230361 useless extension candidates. Maximal degree in co-relation 124651. Up to 113030 conditions per place. [2024-10-11 19:56:01,624 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 132 selfloop transitions, 38 changer transitions 0/186 dead transitions. [2024-10-11 19:56:01,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 186 transitions, 1076 flow [2024-10-11 19:56:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-10-11 19:56:01,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-10-11 19:56:01,626 INFO L175 Difference]: Start difference. First operand has 65 places, 83 transitions, 333 flow. Second operand 5 states and 210 transitions. [2024-10-11 19:56:01,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 186 transitions, 1076 flow [2024-10-11 19:56:01,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 186 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:56:01,753 INFO L231 Difference]: Finished difference. Result has 72 places, 120 transitions, 738 flow [2024-10-11 19:56:01,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=738, PETRI_PLACES=72, PETRI_TRANSITIONS=120} [2024-10-11 19:56:01,754 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2024-10-11 19:56:01,754 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 120 transitions, 738 flow [2024-10-11 19:56:01,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:01,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:01,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:01,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:56:01,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:56:01,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -918382627, now seen corresponding path program 4 times [2024-10-11 19:56:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:56:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252747921] [2024-10-11 19:56:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:56:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:56:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252747921] [2024-10-11 19:56:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252747921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963699125] [2024-10-11 19:56:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:02,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:56:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:56:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:56:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:56:02,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-10-11 19:56:02,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 120 transitions, 738 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:02,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:02,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-10-11 19:56:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand