./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/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:17:13,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:17:13,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:17:13,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:17:13,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:17:13,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:17:13,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:17:13,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:17:13,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:17:13,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:17:13,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:17:13,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:17:13,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:17:13,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:17:13,734 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:17:13,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:17:13,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:17:13,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:17:13,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:17:13,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:17:13,736 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:17:13,737 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:17:13,737 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:17:13,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:17:13,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:17:13,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:17:13,738 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:17:13,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:17:13,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:17:13,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:17:13,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:17:13,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:17:13,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:17:13,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:17:13,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:17:13,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:17:13,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:17:13,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:17:13,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:17:13,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:17:13,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:17:13,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:17:13,743 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-10-24 19:17:13,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:17:14,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:17:14,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:17:14,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:17:14,015 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:17:14,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-24 19:17:15,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:17:15,609 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:17:15,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-24 19:17:15,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b63cd30/7b69ef79b47d4bed93ee98dc249f3525/FLAG572640cdb [2024-10-24 19:17:15,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b63cd30/7b69ef79b47d4bed93ee98dc249f3525 [2024-10-24 19:17:15,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:17:15,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:17:15,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:15,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:17:15,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:17:15,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:15" (1/1) ... [2024-10-24 19:17:15,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d55b3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:15, skipping insertion in model container [2024-10-24 19:17:15,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:15" (1/1) ... [2024-10-24 19:17:16,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:17:16,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:16,278 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:17:16,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:17:16,312 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:17:16,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16 WrapperNode [2024-10-24 19:17:16,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:17:16,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:17:16,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:17:16,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:17:16,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,343 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-10-24 19:17:16,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:17:16,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:17:16,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:17:16,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:17:16,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,372 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]. [2024-10-24 19:17:16,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:17:16,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:17:16,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:17:16,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:17:16,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (1/1) ... [2024-10-24 19:17:16,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:17:16,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:16,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:17:16,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:17:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:17:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:17:16,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:17:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:17:16,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:17:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:17:16,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:17:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:17:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:17:16,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:17:16,482 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:17:16,593 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:17:16,596 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:17:16,780 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:17:16,781 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:17:16,928 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:17:16,928 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:17:16,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:16 BoogieIcfgContainer [2024-10-24 19:17:16,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:17:16,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:17:16,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:17:16,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:17:16,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:17:15" (1/3) ... [2024-10-24 19:17:16,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b47d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:16, skipping insertion in model container [2024-10-24 19:17:16,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:16" (2/3) ... [2024-10-24 19:17:16,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b47d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:16, skipping insertion in model container [2024-10-24 19:17:16,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:16" (3/3) ... [2024-10-24 19:17:16,935 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-10-24 19:17:16,952 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:17:16,953 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 19:17:16,953 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:17:17,012 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:17:17,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-10-24 19:17:17,060 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-10-24 19:17:17,060 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:17:17,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-10-24 19:17:17,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-10-24 19:17:17,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-10-24 19:17:17,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:17:17,081 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;@245644ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:17:17,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-24 19:17:17,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:17:17,097 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-24 19:17:17,097 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:17:17,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:17,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:17,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:17,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-10-24 19:17:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20638351] [2024-10-24 19:17:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:17,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20638351] [2024-10-24 19:17:17,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20638351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:17,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:17,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:17:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042342910] [2024-10-24 19:17:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:17,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:17:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:17:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:17:17,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:17,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-24 19:17:17,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:17,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:18,103 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-10-24 19:17:18,103 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 19:17:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-10-24 19:17:18,113 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-10-24 19:17:18,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-10-24 19:17:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:17:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:17:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-24 19:17:18,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 19:17:18,130 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-10-24 19:17:18,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-10-24 19:17:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:17:18,137 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-10-24 19:17:18,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-10-24 19:17:18,143 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-10-24 19:17:18,143 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-10-24 19:17:18,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-24 19:17:18,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:18,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:18,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:17:18,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:18,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-10-24 19:17:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:18,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578684235] [2024-10-24 19:17:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578684235] [2024-10-24 19:17:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578684235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:18,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994528890] [2024-10-24 19:17:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:18,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:18,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:18,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:18,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:18,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:18,488 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-10-24 19:17:18,488 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-24 19:17:18,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-10-24 19:17:18,496 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-10-24 19:17:18,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-10-24 19:17:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-24 19:17:18,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-10-24 19:17:18,500 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-10-24 19:17:18,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-10-24 19:17:18,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:18,502 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-10-24 19:17:18,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-10-24 19:17:18,505 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-24 19:17:18,505 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-10-24 19:17:18,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:18,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:18,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:18,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:17:18,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:18,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-10-24 19:17:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915249155] [2024-10-24 19:17:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:18,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:18,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915249155] [2024-10-24 19:17:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915249155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752274445] [2024-10-24 19:17:18,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:17:18,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:18,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:18,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:18,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:17:18,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:17:18,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:18,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:18,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:18,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752274445] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:17:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 7 [2024-10-24 19:17:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307578226] [2024-10-24 19:17:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:18,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:17:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:17:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:17:18,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:18,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-24 19:17:18,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:18,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:19,062 INFO L124 PetriNetUnfolderBase]: 581/828 cut-off events. [2024-10-24 19:17:19,062 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-10-24 19:17:19,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 828 events. 581/828 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 136 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 2009. Up to 484 conditions per place. [2024-10-24 19:17:19,073 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 55 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2024-10-24 19:17:19,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 402 flow [2024-10-24 19:17:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:17:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:17:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-24 19:17:19,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-24 19:17:19,076 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 68 transitions. [2024-10-24 19:17:19,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 402 flow [2024-10-24 19:17:19,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 64 transitions, 388 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-10-24 19:17:19,082 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 181 flow [2024-10-24 19:17:19,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2024-10-24 19:17:19,083 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-24 19:17:19,084 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 181 flow [2024-10-24 19:17:19,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-24 19:17:19,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:19,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:19,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 19:17:19,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:19,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:19,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-10-24 19:17:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550193856] [2024-10-24 19:17:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:19,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:19,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:19,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550193856] [2024-10-24 19:17:19,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550193856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:19,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:19,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92049300] [2024-10-24 19:17:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:19,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:19,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:19,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:19,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:19,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:19,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:19,598 INFO L124 PetriNetUnfolderBase]: 706/997 cut-off events. [2024-10-24 19:17:19,598 INFO L125 PetriNetUnfolderBase]: For 1708/1708 co-relation queries the response was YES. [2024-10-24 19:17:19,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 997 events. 706/997 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3466 event pairs, 240 based on Foata normal form. 16/1013 useless extension candidates. Maximal degree in co-relation 2498. Up to 729 conditions per place. [2024-10-24 19:17:19,606 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 53 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-10-24 19:17:19,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 484 flow [2024-10-24 19:17:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-10-24 19:17:19,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-24 19:17:19,608 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 181 flow. Second operand 5 states and 75 transitions. [2024-10-24 19:17:19,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 484 flow [2024-10-24 19:17:19,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 467 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:19,617 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 300 flow [2024-10-24 19:17:19,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2024-10-24 19:17:19,617 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-10-24 19:17:19,618 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 300 flow [2024-10-24 19:17:19,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:19,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:19,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:19,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:17:19,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:19,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2144322713, now seen corresponding path program 4 times [2024-10-24 19:17:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:19,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574460077] [2024-10-24 19:17:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:19,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574460077] [2024-10-24 19:17:19,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574460077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:19,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:19,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:19,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873494003] [2024-10-24 19:17:19,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:19,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:19,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:19,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:19,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:19,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:19,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:19,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:19,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:19,977 INFO L124 PetriNetUnfolderBase]: 752/1079 cut-off events. [2024-10-24 19:17:19,978 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-10-24 19:17:19,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1079 events. 752/1079 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4020 event pairs, 91 based on Foata normal form. 84/1163 useless extension candidates. Maximal degree in co-relation 3245. Up to 535 conditions per place. [2024-10-24 19:17:19,988 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 66 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2024-10-24 19:17:19,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 764 flow [2024-10-24 19:17:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:17:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:17:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-10-24 19:17:19,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-10-24 19:17:19,990 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 300 flow. Second operand 7 states and 113 transitions. [2024-10-24 19:17:19,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 764 flow [2024-10-24 19:17:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 734 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-24 19:17:20,000 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 474 flow [2024-10-24 19:17:20,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2024-10-24 19:17:20,001 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-10-24 19:17:20,002 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 474 flow [2024-10-24 19:17:20,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:20,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:20,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 19:17:20,003 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:20,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash -847259184, now seen corresponding path program 1 times [2024-10-24 19:17:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794198025] [2024-10-24 19:17:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794198025] [2024-10-24 19:17:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794198025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:20,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:20,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876621644] [2024-10-24 19:17:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:20,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:20,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:20,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:20,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:20,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:20,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:20,299 INFO L124 PetriNetUnfolderBase]: 745/1083 cut-off events. [2024-10-24 19:17:20,299 INFO L125 PetriNetUnfolderBase]: For 4169/4169 co-relation queries the response was YES. [2024-10-24 19:17:20,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 1083 events. 745/1083 cut-off events. For 4169/4169 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4081 event pairs, 192 based on Foata normal form. 35/1118 useless extension candidates. Maximal degree in co-relation 4271. Up to 660 conditions per place. [2024-10-24 19:17:20,308 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 48 selfloop transitions, 13 changer transitions 26/88 dead transitions. [2024-10-24 19:17:20,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 774 flow [2024-10-24 19:17:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-10-24 19:17:20,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 19:17:20,310 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 474 flow. Second operand 5 states and 81 transitions. [2024-10-24 19:17:20,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 774 flow [2024-10-24 19:17:20,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 766 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-24 19:17:20,324 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 441 flow [2024-10-24 19:17:20,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-10-24 19:17:20,325 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-10-24 19:17:20,326 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 441 flow [2024-10-24 19:17:20,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:20,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:20,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 19:17:20,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:20,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -442867849, now seen corresponding path program 5 times [2024-10-24 19:17:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328249305] [2024-10-24 19:17:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328249305] [2024-10-24 19:17:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328249305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:20,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:20,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322622429] [2024-10-24 19:17:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:20,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:20,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:20,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:20,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:20,603 INFO L124 PetriNetUnfolderBase]: 628/931 cut-off events. [2024-10-24 19:17:20,603 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-10-24 19:17:20,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 931 events. 628/931 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3472 event pairs, 154 based on Foata normal form. 42/973 useless extension candidates. Maximal degree in co-relation 3913. Up to 535 conditions per place. [2024-10-24 19:17:20,611 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 55 selfloop transitions, 14 changer transitions 11/81 dead transitions. [2024-10-24 19:17:20,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 754 flow [2024-10-24 19:17:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-24 19:17:20,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-10-24 19:17:20,613 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 441 flow. Second operand 5 states and 77 transitions. [2024-10-24 19:17:20,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 754 flow [2024-10-24 19:17:20,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 692 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 19:17:20,622 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 444 flow [2024-10-24 19:17:20,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-24 19:17:20,623 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-10-24 19:17:20,623 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 444 flow [2024-10-24 19:17:20,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:20,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:20,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:17:20,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:20,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1967052259, now seen corresponding path program 6 times [2024-10-24 19:17:20,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268905318] [2024-10-24 19:17:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:20,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:20,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:20,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268905318] [2024-10-24 19:17:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268905318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865627746] [2024-10-24 19:17:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:20,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:20,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:20,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:20,868 INFO L124 PetriNetUnfolderBase]: 659/974 cut-off events. [2024-10-24 19:17:20,868 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2024-10-24 19:17:20,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 974 events. 659/974 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3556 event pairs, 244 based on Foata normal form. 16/990 useless extension candidates. Maximal degree in co-relation 4292. Up to 712 conditions per place. [2024-10-24 19:17:20,876 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 52 selfloop transitions, 22 changer transitions 4/79 dead transitions. [2024-10-24 19:17:20,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 810 flow [2024-10-24 19:17:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-10-24 19:17:20,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-10-24 19:17:20,878 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 444 flow. Second operand 5 states and 69 transitions. [2024-10-24 19:17:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 810 flow [2024-10-24 19:17:20,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 757 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-10-24 19:17:20,888 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 580 flow [2024-10-24 19:17:20,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-10-24 19:17:20,889 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-10-24 19:17:20,889 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 580 flow [2024-10-24 19:17:20,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:20,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:20,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:20,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 19:17:20,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:20,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 442458791, now seen corresponding path program 7 times [2024-10-24 19:17:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623739232] [2024-10-24 19:17:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623739232] [2024-10-24 19:17:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623739232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331053461] [2024-10-24 19:17:20,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:17:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:20,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:20,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 19:17:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:21,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:17:21,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:21,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331053461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:21,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:21,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 19:17:21,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580833321] [2024-10-24 19:17:21,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:21,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:17:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:17:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:17:21,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:21,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 580 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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) [2024-10-24 19:17:21,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:21,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:21,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:21,608 INFO L124 PetriNetUnfolderBase]: 946/1383 cut-off events. [2024-10-24 19:17:21,608 INFO L125 PetriNetUnfolderBase]: For 7124/7124 co-relation queries the response was YES. [2024-10-24 19:17:21,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 1383 events. 946/1383 cut-off events. For 7124/7124 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5390 event pairs, 184 based on Foata normal form. 74/1457 useless extension candidates. Maximal degree in co-relation 6467. Up to 630 conditions per place. [2024-10-24 19:17:21,623 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 76 selfloop transitions, 74 changer transitions 2/153 dead transitions. [2024-10-24 19:17:21,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1604 flow [2024-10-24 19:17:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:17:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:17:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-10-24 19:17:21,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-10-24 19:17:21,625 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 580 flow. Second operand 12 states and 164 transitions. [2024-10-24 19:17:21,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1604 flow [2024-10-24 19:17:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 1544 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:21,644 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 1293 flow [2024-10-24 19:17:21,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1293, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2024-10-24 19:17:21,647 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-10-24 19:17:21,647 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 1293 flow [2024-10-24 19:17:21,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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) [2024-10-24 19:17:21,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:21,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:21,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 19:17:21,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-24 19:17:21,852 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:21,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -560455765, now seen corresponding path program 8 times [2024-10-24 19:17:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601095372] [2024-10-24 19:17:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:21,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:21,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601095372] [2024-10-24 19:17:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601095372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:17:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:17:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:17:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903724111] [2024-10-24 19:17:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:17:21,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:17:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:21,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:17:21,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:17:21,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:21,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 1293 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:21,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:21,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:21,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:22,213 INFO L124 PetriNetUnfolderBase]: 933/1376 cut-off events. [2024-10-24 19:17:22,213 INFO L125 PetriNetUnfolderBase]: For 12219/12219 co-relation queries the response was YES. [2024-10-24 19:17:22,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 1376 events. 933/1376 cut-off events. For 12219/12219 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5358 event pairs, 273 based on Foata normal form. 22/1398 useless extension candidates. Maximal degree in co-relation 7752. Up to 900 conditions per place. [2024-10-24 19:17:22,229 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 86 selfloop transitions, 22 changer transitions 12/121 dead transitions. [2024-10-24 19:17:22,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 1694 flow [2024-10-24 19:17:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:17:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:17:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-24 19:17:22,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-24 19:17:22,231 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 1293 flow. Second operand 5 states and 66 transitions. [2024-10-24 19:17:22,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 1694 flow [2024-10-24 19:17:22,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 121 transitions, 1563 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-24 19:17:22,262 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 1216 flow [2024-10-24 19:17:22,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2024-10-24 19:17:22,263 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-10-24 19:17:22,263 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 1216 flow [2024-10-24 19:17:22,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-24 19:17:22,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:22,264 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] [2024-10-24 19:17:22,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 19:17:22,264 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash 557123088, now seen corresponding path program 1 times [2024-10-24 19:17:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:22,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629057649] [2024-10-24 19:17:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629057649] [2024-10-24 19:17:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629057649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548986867] [2024-10-24 19:17:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:22,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:22,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:22,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 19:17:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:22,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:17:22,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:22,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548986867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:22,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:22,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-24 19:17:22,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581563021] [2024-10-24 19:17:22,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:22,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:17:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:17:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:17:22,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:22,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 1216 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2024-10-24 19:17:22,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:22,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:22,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:22,766 INFO L124 PetriNetUnfolderBase]: 966/1386 cut-off events. [2024-10-24 19:17:22,766 INFO L125 PetriNetUnfolderBase]: For 11637/11637 co-relation queries the response was YES. [2024-10-24 19:17:22,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 1386 events. 966/1386 cut-off events. For 11637/11637 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5225 event pairs, 221 based on Foata normal form. 38/1424 useless extension candidates. Maximal degree in co-relation 7693. Up to 844 conditions per place. [2024-10-24 19:17:22,800 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 84 selfloop transitions, 59 changer transitions 1/145 dead transitions. [2024-10-24 19:17:22,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1969 flow [2024-10-24 19:17:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:17:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:17:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-10-24 19:17:22,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-10-24 19:17:22,803 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 1216 flow. Second operand 6 states and 87 transitions. [2024-10-24 19:17:22,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1969 flow [2024-10-24 19:17:22,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 145 transitions, 1871 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-24 19:17:22,824 INFO L231 Difference]: Finished difference. Result has 78 places, 115 transitions, 1515 flow [2024-10-24 19:17:22,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1515, PETRI_PLACES=78, PETRI_TRANSITIONS=115} [2024-10-24 19:17:22,826 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-10-24 19:17:22,827 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 115 transitions, 1515 flow [2024-10-24 19:17:22,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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) [2024-10-24 19:17:22,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:22,827 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] [2024-10-24 19:17:22,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 19:17:23,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:23,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:23,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1437217960, now seen corresponding path program 1 times [2024-10-24 19:17:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36874095] [2024-10-24 19:17:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36874095] [2024-10-24 19:17:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36874095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888474265] [2024-10-24 19:17:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:23,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:23,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 19:17:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:23,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:23,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:23,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888474265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:24,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:24,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-24 19:17:24,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036413403] [2024-10-24 19:17:24,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:24,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:17:24,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:17:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:17:24,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:24,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 115 transitions, 1515 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2024-10-24 19:17:24,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:24,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:24,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:24,515 INFO L124 PetriNetUnfolderBase]: 1456/2098 cut-off events. [2024-10-24 19:17:24,515 INFO L125 PetriNetUnfolderBase]: For 16963/16963 co-relation queries the response was YES. [2024-10-24 19:17:24,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12871 conditions, 2098 events. 1456/2098 cut-off events. For 16963/16963 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8428 event pairs, 154 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 12074. Up to 1478 conditions per place. [2024-10-24 19:17:24,536 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 142 selfloop transitions, 61 changer transitions 2/206 dead transitions. [2024-10-24 19:17:24,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 206 transitions, 2681 flow [2024-10-24 19:17:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-10-24 19:17:24,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-10-24 19:17:24,538 INFO L175 Difference]: Start difference. First operand has 78 places, 115 transitions, 1515 flow. Second operand 9 states and 143 transitions. [2024-10-24 19:17:24,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 206 transitions, 2681 flow [2024-10-24 19:17:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 206 transitions, 2499 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-24 19:17:24,583 INFO L231 Difference]: Finished difference. Result has 84 places, 152 transitions, 2054 flow [2024-10-24 19:17:24,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2054, PETRI_PLACES=84, PETRI_TRANSITIONS=152} [2024-10-24 19:17:24,584 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-10-24 19:17:24,584 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 152 transitions, 2054 flow [2024-10-24 19:17:24,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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) [2024-10-24 19:17:24,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:24,586 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] [2024-10-24 19:17:24,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 19:17:24,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:24,787 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:24,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-10-24 19:17:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042694925] [2024-10-24 19:17:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042694925] [2024-10-24 19:17:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042694925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576048763] [2024-10-24 19:17:24,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:17:24,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:24,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:24,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:24,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 19:17:25,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:17:25,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:25,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:25,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:25,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:25,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576048763] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:25,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-24 19:17:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21926448] [2024-10-24 19:17:25,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:25,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:17:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:17:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:17:25,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:25,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 152 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-10-24 19:17:25,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:25,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:26,291 INFO L124 PetriNetUnfolderBase]: 1800/2598 cut-off events. [2024-10-24 19:17:26,292 INFO L125 PetriNetUnfolderBase]: For 24593/24593 co-relation queries the response was YES. [2024-10-24 19:17:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16741 conditions, 2598 events. 1800/2598 cut-off events. For 24593/24593 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10796 event pairs, 279 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 16040. Up to 1967 conditions per place. [2024-10-24 19:17:26,313 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 158 selfloop transitions, 63 changer transitions 2/224 dead transitions. [2024-10-24 19:17:26,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 224 transitions, 3104 flow [2024-10-24 19:17:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-24 19:17:26,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-24 19:17:26,315 INFO L175 Difference]: Start difference. First operand has 84 places, 152 transitions, 2054 flow. Second operand 9 states and 140 transitions. [2024-10-24 19:17:26,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 224 transitions, 3104 flow [2024-10-24 19:17:26,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 224 transitions, 2904 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:26,376 INFO L231 Difference]: Finished difference. Result has 93 places, 173 transitions, 2361 flow [2024-10-24 19:17:26,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2361, PETRI_PLACES=93, PETRI_TRANSITIONS=173} [2024-10-24 19:17:26,377 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-10-24 19:17:26,378 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 173 transitions, 2361 flow [2024-10-24 19:17:26,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-10-24 19:17:26,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:26,378 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] [2024-10-24 19:17:26,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 19:17:26,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 19:17:26,583 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:26,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 59592076, now seen corresponding path program 3 times [2024-10-24 19:17:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026585577] [2024-10-24 19:17:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:26,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026585577] [2024-10-24 19:17:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026585577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:26,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369620559] [2024-10-24 19:17:26,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:17:26,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:26,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:26,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:26,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 19:17:26,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:17:26,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:26,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:26,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:26,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369620559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:27,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:27,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-24 19:17:27,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301152833] [2024-10-24 19:17:27,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:27,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:17:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:17:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:17:27,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:27,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 173 transitions, 2361 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-10-24 19:17:27,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:27,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:28,066 INFO L124 PetriNetUnfolderBase]: 2212/3198 cut-off events. [2024-10-24 19:17:28,067 INFO L125 PetriNetUnfolderBase]: For 30153/30153 co-relation queries the response was YES. [2024-10-24 19:17:28,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20407 conditions, 3198 events. 2212/3198 cut-off events. For 30153/30153 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13883 event pairs, 446 based on Foata normal form. 2/3200 useless extension candidates. Maximal degree in co-relation 19823. Up to 2670 conditions per place. [2024-10-24 19:17:28,098 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 198 selfloop transitions, 57 changer transitions 2/258 dead transitions. [2024-10-24 19:17:28,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 258 transitions, 3646 flow [2024-10-24 19:17:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-24 19:17:28,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-24 19:17:28,100 INFO L175 Difference]: Start difference. First operand has 93 places, 173 transitions, 2361 flow. Second operand 9 states and 140 transitions. [2024-10-24 19:17:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 258 transitions, 3646 flow [2024-10-24 19:17:28,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 258 transitions, 3469 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:28,178 INFO L231 Difference]: Finished difference. Result has 103 places, 206 transitions, 2862 flow [2024-10-24 19:17:28,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2862, PETRI_PLACES=103, PETRI_TRANSITIONS=206} [2024-10-24 19:17:28,178 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-10-24 19:17:28,179 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 206 transitions, 2862 flow [2024-10-24 19:17:28,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-10-24 19:17:28,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:28,179 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] [2024-10-24 19:17:28,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 19:17:28,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:28,380 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:28,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1636981364, now seen corresponding path program 4 times [2024-10-24 19:17:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:28,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788500468] [2024-10-24 19:17:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788500468] [2024-10-24 19:17:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788500468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528950438] [2024-10-24 19:17:28,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:17:28,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:28,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:28,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 19:17:28,615 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:17:28,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:28,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:28,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:28,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528950438] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:29,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-24 19:17:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755330548] [2024-10-24 19:17:29,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:29,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:17:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:17:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:17:29,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:29,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 206 transitions, 2862 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-10-24 19:17:29,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:29,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:29,923 INFO L124 PetriNetUnfolderBase]: 2452/3550 cut-off events. [2024-10-24 19:17:29,923 INFO L125 PetriNetUnfolderBase]: For 35723/35723 co-relation queries the response was YES. [2024-10-24 19:17:29,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 3550 events. 2452/3550 cut-off events. For 35723/35723 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15731 event pairs, 550 based on Foata normal form. 2/3552 useless extension candidates. Maximal degree in co-relation 22542. Up to 3104 conditions per place. [2024-10-24 19:17:29,957 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 213 selfloop transitions, 53 changer transitions 2/269 dead transitions. [2024-10-24 19:17:29,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 269 transitions, 4001 flow [2024-10-24 19:17:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-10-24 19:17:29,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-10-24 19:17:29,958 INFO L175 Difference]: Start difference. First operand has 103 places, 206 transitions, 2862 flow. Second operand 9 states and 136 transitions. [2024-10-24 19:17:29,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 269 transitions, 4001 flow [2024-10-24 19:17:30,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 269 transitions, 3773 flow, removed 102 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:30,042 INFO L231 Difference]: Finished difference. Result has 113 places, 221 transitions, 3066 flow [2024-10-24 19:17:30,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3066, PETRI_PLACES=113, PETRI_TRANSITIONS=221} [2024-10-24 19:17:30,043 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-10-24 19:17:30,043 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 221 transitions, 3066 flow [2024-10-24 19:17:30,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-10-24 19:17:30,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:30,043 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] [2024-10-24 19:17:30,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 19:17:30,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:30,244 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:30,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 320976776, now seen corresponding path program 5 times [2024-10-24 19:17:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:30,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928284037] [2024-10-24 19:17:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928284037] [2024-10-24 19:17:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928284037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874933304] [2024-10-24 19:17:30,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:17:30,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:30,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:30,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:30,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 19:17:30,464 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:17:30,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:30,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:30,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:30,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874933304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:31,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-24 19:17:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6705055] [2024-10-24 19:17:31,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:31,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:17:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:17:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:17:31,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:31,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 221 transitions, 3066 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 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) [2024-10-24 19:17:31,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:31,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:31,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:32,567 INFO L124 PetriNetUnfolderBase]: 2876/4162 cut-off events. [2024-10-24 19:17:32,567 INFO L125 PetriNetUnfolderBase]: For 44740/44740 co-relation queries the response was YES. [2024-10-24 19:17:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27518 conditions, 4162 events. 2876/4162 cut-off events. For 44740/44740 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19011 event pairs, 681 based on Foata normal form. 2/4164 useless extension candidates. Maximal degree in co-relation 26881. Up to 3629 conditions per place. [2024-10-24 19:17:32,680 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 241 selfloop transitions, 60 changer transitions 2/304 dead transitions. [2024-10-24 19:17:32,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 304 transitions, 4638 flow [2024-10-24 19:17:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-10-24 19:17:32,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-24 19:17:32,682 INFO L175 Difference]: Start difference. First operand has 113 places, 221 transitions, 3066 flow. Second operand 9 states and 135 transitions. [2024-10-24 19:17:32,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 304 transitions, 4638 flow [2024-10-24 19:17:32,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 304 transitions, 4432 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:32,782 INFO L231 Difference]: Finished difference. Result has 123 places, 257 transitions, 3713 flow [2024-10-24 19:17:32,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3713, PETRI_PLACES=123, PETRI_TRANSITIONS=257} [2024-10-24 19:17:32,783 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-10-24 19:17:32,784 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 257 transitions, 3713 flow [2024-10-24 19:17:32,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 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) [2024-10-24 19:17:32,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:32,784 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] [2024-10-24 19:17:32,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 19:17:32,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 19:17:32,985 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:32,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613192, now seen corresponding path program 6 times [2024-10-24 19:17:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045785930] [2024-10-24 19:17:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:33,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:33,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045785930] [2024-10-24 19:17:33,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045785930] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:33,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487348517] [2024-10-24 19:17:33,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:17:33,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:33,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:33,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 19:17:33,238 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-24 19:17:33,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:33,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:17:33,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:33,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487348517] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:35,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-24 19:17:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788488533] [2024-10-24 19:17:35,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:35,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:17:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:17:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:17:35,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:35,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 257 transitions, 3713 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-10-24 19:17:35,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:35,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:35,715 INFO L124 PetriNetUnfolderBase]: 3116/4514 cut-off events. [2024-10-24 19:17:35,716 INFO L125 PetriNetUnfolderBase]: For 51269/51269 co-relation queries the response was YES. [2024-10-24 19:17:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30513 conditions, 4514 events. 3116/4514 cut-off events. For 51269/51269 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20996 event pairs, 787 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 29843. Up to 4085 conditions per place. [2024-10-24 19:17:35,756 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 261 selfloop transitions, 54 changer transitions 2/318 dead transitions. [2024-10-24 19:17:35,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 318 transitions, 5040 flow [2024-10-24 19:17:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:17:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:17:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-10-24 19:17:35,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-10-24 19:17:35,758 INFO L175 Difference]: Start difference. First operand has 123 places, 257 transitions, 3713 flow. Second operand 9 states and 134 transitions. [2024-10-24 19:17:35,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 318 transitions, 5040 flow [2024-10-24 19:17:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 318 transitions, 4740 flow, removed 138 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:35,879 INFO L231 Difference]: Finished difference. Result has 133 places, 272 transitions, 3907 flow [2024-10-24 19:17:35,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3907, PETRI_PLACES=133, PETRI_TRANSITIONS=272} [2024-10-24 19:17:35,880 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-10-24 19:17:35,880 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 272 transitions, 3907 flow [2024-10-24 19:17:35,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-10-24 19:17:35,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:35,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:35,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 19:17:36,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 19:17:36,081 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:36,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash 313622787, now seen corresponding path program 7 times [2024-10-24 19:17:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585322885] [2024-10-24 19:17:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585322885] [2024-10-24 19:17:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585322885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301605440] [2024-10-24 19:17:36,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:17:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:36,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 19:17:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:36,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:36,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:36,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301605440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:36,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 19:17:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680797067] [2024-10-24 19:17:36,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:36,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:17:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:17:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:17:36,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:36,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 272 transitions, 3907 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2024-10-24 19:17:36,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:36,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:37,354 INFO L124 PetriNetUnfolderBase]: 4837/6868 cut-off events. [2024-10-24 19:17:37,354 INFO L125 PetriNetUnfolderBase]: For 84374/84374 co-relation queries the response was YES. [2024-10-24 19:17:37,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45961 conditions, 6868 events. 4837/6868 cut-off events. For 84374/84374 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32861 event pairs, 466 based on Foata normal form. 48/6916 useless extension candidates. Maximal degree in co-relation 44580. Up to 2243 conditions per place. [2024-10-24 19:17:37,418 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 537 selfloop transitions, 134 changer transitions 0/672 dead transitions. [2024-10-24 19:17:37,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 672 transitions, 10650 flow [2024-10-24 19:17:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:17:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:17:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-10-24 19:17:37,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-10-24 19:17:37,420 INFO L175 Difference]: Start difference. First operand has 133 places, 272 transitions, 3907 flow. Second operand 13 states and 204 transitions. [2024-10-24 19:17:37,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 672 transitions, 10650 flow [2024-10-24 19:17:37,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 672 transitions, 9942 flow, removed 330 selfloop flow, removed 2 redundant places. [2024-10-24 19:17:37,567 INFO L231 Difference]: Finished difference. Result has 151 places, 348 transitions, 5175 flow [2024-10-24 19:17:37,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5175, PETRI_PLACES=151, PETRI_TRANSITIONS=348} [2024-10-24 19:17:37,568 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-10-24 19:17:37,568 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 348 transitions, 5175 flow [2024-10-24 19:17:37,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2024-10-24 19:17:37,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:37,568 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:37,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 19:17:37,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 19:17:37,769 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:37,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1782818654, now seen corresponding path program 8 times [2024-10-24 19:17:37,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:37,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922353490] [2024-10-24 19:17:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:37,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922353490] [2024-10-24 19:17:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922353490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637029797] [2024-10-24 19:17:37,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:17:37,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:37,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:37,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:37,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 19:17:37,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:17:37,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:37,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:37,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:38,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:38,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637029797] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:38,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:38,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 19:17:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776685368] [2024-10-24 19:17:38,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:38,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:17:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:17:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:17:38,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 348 transitions, 5175 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2024-10-24 19:17:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:40,682 INFO L124 PetriNetUnfolderBase]: 6514/9210 cut-off events. [2024-10-24 19:17:40,682 INFO L125 PetriNetUnfolderBase]: For 127524/127524 co-relation queries the response was YES. [2024-10-24 19:17:40,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69436 conditions, 9210 events. 6514/9210 cut-off events. For 127524/127524 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45615 event pairs, 340 based on Foata normal form. 142/9352 useless extension candidates. Maximal degree in co-relation 67061. Up to 3035 conditions per place. [2024-10-24 19:17:40,900 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 604 selfloop transitions, 492 changer transitions 0/1097 dead transitions. [2024-10-24 19:17:40,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1097 transitions, 17747 flow [2024-10-24 19:17:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-24 19:17:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-24 19:17:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 678 transitions. [2024-10-24 19:17:40,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-10-24 19:17:40,903 INFO L175 Difference]: Start difference. First operand has 151 places, 348 transitions, 5175 flow. Second operand 55 states and 678 transitions. [2024-10-24 19:17:40,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1097 transitions, 17747 flow [2024-10-24 19:17:41,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1097 transitions, 17037 flow, removed 302 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:41,159 INFO L231 Difference]: Finished difference. Result has 229 places, 678 transitions, 11611 flow [2024-10-24 19:17:41,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11611, PETRI_PLACES=229, PETRI_TRANSITIONS=678} [2024-10-24 19:17:41,159 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-10-24 19:17:41,159 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 678 transitions, 11611 flow [2024-10-24 19:17:41,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2024-10-24 19:17:41,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:41,160 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:41,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 19:17:41,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:41,361 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:41,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash 900764061, now seen corresponding path program 9 times [2024-10-24 19:17:41,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:41,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169714474] [2024-10-24 19:17:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169714474] [2024-10-24 19:17:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169714474] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444485353] [2024-10-24 19:17:41,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:17:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:41,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:41,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 19:17:41,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 19:17:41,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:41,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:41,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:41,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444485353] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:41,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:41,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-24 19:17:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981695690] [2024-10-24 19:17:41,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:41,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:17:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:17:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:17:41,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:41,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 678 transitions, 11611 flow. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 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) [2024-10-24 19:17:41,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:41,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:41,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:44,266 INFO L124 PetriNetUnfolderBase]: 6754/9618 cut-off events. [2024-10-24 19:17:44,266 INFO L125 PetriNetUnfolderBase]: For 288191/288191 co-relation queries the response was YES. [2024-10-24 19:17:44,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86887 conditions, 9618 events. 6754/9618 cut-off events. For 288191/288191 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48799 event pairs, 1403 based on Foata normal form. 112/9730 useless extension candidates. Maximal degree in co-relation 86284. Up to 4680 conditions per place. [2024-10-24 19:17:44,351 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 517 selfloop transitions, 351 changer transitions 6/875 dead transitions. [2024-10-24 19:17:44,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 875 transitions, 16390 flow [2024-10-24 19:17:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 19:17:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 19:17:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-10-24 19:17:44,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-10-24 19:17:44,353 INFO L175 Difference]: Start difference. First operand has 229 places, 678 transitions, 11611 flow. Second operand 15 states and 201 transitions. [2024-10-24 19:17:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 875 transitions, 16390 flow [2024-10-24 19:17:45,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 875 transitions, 14068 flow, removed 938 selfloop flow, removed 4 redundant places. [2024-10-24 19:17:45,648 INFO L231 Difference]: Finished difference. Result has 245 places, 739 transitions, 11487 flow [2024-10-24 19:17:45,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11487, PETRI_PLACES=245, PETRI_TRANSITIONS=739} [2024-10-24 19:17:45,649 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-10-24 19:17:45,649 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 739 transitions, 11487 flow [2024-10-24 19:17:45,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 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) [2024-10-24 19:17:45,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:45,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:45,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 19:17:45,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:45,850 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:45,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -146329803, now seen corresponding path program 10 times [2024-10-24 19:17:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:45,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157372528] [2024-10-24 19:17:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:45,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157372528] [2024-10-24 19:17:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157372528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022580578] [2024-10-24 19:17:45,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:17:45,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:45,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:45,968 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:45,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 19:17:46,024 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:17:46,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:46,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:46,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:46,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:17:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022580578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:46,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:46,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 19:17:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381415549] [2024-10-24 19:17:46,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:46,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:17:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:17:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:17:46,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:46,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 739 transitions, 11487 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 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) [2024-10-24 19:17:46,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:46,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:46,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:48,583 INFO L124 PetriNetUnfolderBase]: 7092/10202 cut-off events. [2024-10-24 19:17:48,583 INFO L125 PetriNetUnfolderBase]: For 405011/405011 co-relation queries the response was YES. [2024-10-24 19:17:48,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92083 conditions, 10202 events. 7092/10202 cut-off events. For 405011/405011 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53561 event pairs, 1741 based on Foata normal form. 172/10372 useless extension candidates. Maximal degree in co-relation 91632. Up to 5947 conditions per place. [2024-10-24 19:17:48,672 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 663 selfloop transitions, 250 changer transitions 39/953 dead transitions. [2024-10-24 19:17:48,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 953 transitions, 16972 flow [2024-10-24 19:17:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:17:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:17:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-10-24 19:17:48,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-24 19:17:48,674 INFO L175 Difference]: Start difference. First operand has 245 places, 739 transitions, 11487 flow. Second operand 8 states and 123 transitions. [2024-10-24 19:17:48,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 953 transitions, 16972 flow [2024-10-24 19:17:50,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 953 transitions, 16172 flow, removed 281 selfloop flow, removed 3 redundant places. [2024-10-24 19:17:50,817 INFO L231 Difference]: Finished difference. Result has 253 places, 798 transitions, 12919 flow [2024-10-24 19:17:50,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11029, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12919, PETRI_PLACES=253, PETRI_TRANSITIONS=798} [2024-10-24 19:17:50,818 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-10-24 19:17:50,818 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 798 transitions, 12919 flow [2024-10-24 19:17:50,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 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) [2024-10-24 19:17:50,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:50,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:50,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 19:17:51,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 19:17:51,019 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:51,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 633348975, now seen corresponding path program 11 times [2024-10-24 19:17:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40999078] [2024-10-24 19:17:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:51,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40999078] [2024-10-24 19:17:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40999078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804087225] [2024-10-24 19:17:51,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:17:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:51,162 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:51,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 19:17:51,213 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:17:51,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:51,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:51,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:51,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804087225] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:51,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:51,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-24 19:17:51,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607560587] [2024-10-24 19:17:51,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:51,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 19:17:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 19:17:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-24 19:17:51,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:51,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 798 transitions, 12919 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 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) [2024-10-24 19:17:51,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:51,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:51,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:17:54,376 INFO L124 PetriNetUnfolderBase]: 8223/11640 cut-off events. [2024-10-24 19:17:54,377 INFO L125 PetriNetUnfolderBase]: For 504908/504908 co-relation queries the response was YES. [2024-10-24 19:17:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112897 conditions, 11640 events. 8223/11640 cut-off events. For 504908/504908 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 60476 event pairs, 1463 based on Foata normal form. 86/11724 useless extension candidates. Maximal degree in co-relation 112443. Up to 6709 conditions per place. [2024-10-24 19:17:54,514 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 636 selfloop transitions, 656 changer transitions 0/1293 dead transitions. [2024-10-24 19:17:54,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1293 transitions, 25287 flow [2024-10-24 19:17:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 19:17:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-24 19:17:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 405 transitions. [2024-10-24 19:17:54,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-24 19:17:54,516 INFO L175 Difference]: Start difference. First operand has 253 places, 798 transitions, 12919 flow. Second operand 32 states and 405 transitions. [2024-10-24 19:17:54,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1293 transitions, 25287 flow [2024-10-24 19:17:57,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1293 transitions, 24396 flow, removed 369 selfloop flow, removed 1 redundant places. [2024-10-24 19:17:57,536 INFO L231 Difference]: Finished difference. Result has 291 places, 1091 transitions, 21514 flow [2024-10-24 19:17:57,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12660, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=21514, PETRI_PLACES=291, PETRI_TRANSITIONS=1091} [2024-10-24 19:17:57,537 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-10-24 19:17:57,537 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1091 transitions, 21514 flow [2024-10-24 19:17:57,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 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) [2024-10-24 19:17:57,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:17:57,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:17:57,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:17:57,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:57,738 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:17:57,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:17:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2086858427, now seen corresponding path program 12 times [2024-10-24 19:17:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:17:57,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470830265] [2024-10-24 19:17:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:17:57,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:17:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:17:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:17:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470830265] [2024-10-24 19:17:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470830265] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:17:57,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056850912] [2024-10-24 19:17:57,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:17:57,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:17:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:17:57,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:17:57,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 19:17:57,922 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-24 19:17:57,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:17:57,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:17:57,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:17:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:57,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:17:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:17:58,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056850912] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:17:58,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:17:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-24 19:17:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551318556] [2024-10-24 19:17:58,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:17:58,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 19:17:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:17:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 19:17:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-24 19:17:58,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:17:58,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1091 transitions, 21514 flow. Second operand has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 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) [2024-10-24 19:17:58,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:17:58,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:17:58,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:03,287 INFO L124 PetriNetUnfolderBase]: 10050/14126 cut-off events. [2024-10-24 19:18:03,288 INFO L125 PetriNetUnfolderBase]: For 781193/781193 co-relation queries the response was YES. [2024-10-24 19:18:03,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151248 conditions, 14126 events. 10050/14126 cut-off events. For 781193/781193 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 74695 event pairs, 1308 based on Foata normal form. 466/14588 useless extension candidates. Maximal degree in co-relation 150613. Up to 6234 conditions per place. [2024-10-24 19:18:03,471 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 715 selfloop transitions, 1278 changer transitions 4/1998 dead transitions. [2024-10-24 19:18:03,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1998 transitions, 46799 flow [2024-10-24 19:18:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-24 19:18:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-24 19:18:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 852 transitions. [2024-10-24 19:18:03,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-10-24 19:18:03,475 INFO L175 Difference]: Start difference. First operand has 291 places, 1091 transitions, 21514 flow. Second operand 72 states and 852 transitions. [2024-10-24 19:18:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1998 transitions, 46799 flow [2024-10-24 19:18:10,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1998 transitions, 36056 flow, removed 5002 selfloop flow, removed 4 redundant places. [2024-10-24 19:18:10,717 INFO L231 Difference]: Finished difference. Result has 386 places, 1704 transitions, 33057 flow [2024-10-24 19:18:10,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=16995, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=33057, PETRI_PLACES=386, PETRI_TRANSITIONS=1704} [2024-10-24 19:18:10,718 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-10-24 19:18:10,718 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1704 transitions, 33057 flow [2024-10-24 19:18:10,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 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) [2024-10-24 19:18:10,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:10,719 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:10,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 19:18:10,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:10,919 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:18:10,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash 818812044, now seen corresponding path program 13 times [2024-10-24 19:18:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121719333] [2024-10-24 19:18:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121719333] [2024-10-24 19:18:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121719333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892421913] [2024-10-24 19:18:11,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:18:11,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:11,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:11,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 19:18:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:11,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:18:11,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:11,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892421913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:11,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 19:18:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854556009] [2024-10-24 19:18:11,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:11,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:18:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:18:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:18:11,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:18:11,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1704 transitions, 33057 flow. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2024-10-24 19:18:11,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:11,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:18:11,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:16,335 INFO L124 PetriNetUnfolderBase]: 10089/14310 cut-off events. [2024-10-24 19:18:16,335 INFO L125 PetriNetUnfolderBase]: For 432552/432552 co-relation queries the response was YES. [2024-10-24 19:18:16,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138292 conditions, 14310 events. 10089/14310 cut-off events. For 432552/432552 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 77699 event pairs, 1716 based on Foata normal form. 237/14533 useless extension candidates. Maximal degree in co-relation 137621. Up to 8441 conditions per place. [2024-10-24 19:18:16,491 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1330 selfloop transitions, 417 changer transitions 94/1842 dead transitions. [2024-10-24 19:18:16,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1842 transitions, 39144 flow [2024-10-24 19:18:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:18:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:18:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-10-24 19:18:16,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-24 19:18:16,493 INFO L175 Difference]: Start difference. First operand has 386 places, 1704 transitions, 33057 flow. Second operand 8 states and 126 transitions. [2024-10-24 19:18:16,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1842 transitions, 39144 flow [2024-10-24 19:18:21,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1842 transitions, 32459 flow, removed 3043 selfloop flow, removed 8 redundant places. [2024-10-24 19:18:21,356 INFO L231 Difference]: Finished difference. Result has 388 places, 1677 transitions, 27308 flow [2024-10-24 19:18:21,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26515, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27308, PETRI_PLACES=388, PETRI_TRANSITIONS=1677} [2024-10-24 19:18:21,359 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-10-24 19:18:21,359 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 1677 transitions, 27308 flow [2024-10-24 19:18:21,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2024-10-24 19:18:21,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:21,359 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:21,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 19:18:21,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 19:18:21,560 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:18:21,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash -161483671, now seen corresponding path program 14 times [2024-10-24 19:18:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:21,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587113282] [2024-10-24 19:18:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:21,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587113282] [2024-10-24 19:18:21,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587113282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143583781] [2024-10-24 19:18:21,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:18:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:21,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:21,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 19:18:21,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:18:21,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:21,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:18:21,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:21,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143583781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:21,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-10-24 19:18:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30459931] [2024-10-24 19:18:21,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:21,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:18:21,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:18:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:18:21,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:18:21,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1677 transitions, 27308 flow. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 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) [2024-10-24 19:18:21,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:21,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:18:21,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:28,532 INFO L124 PetriNetUnfolderBase]: 11655/16410 cut-off events. [2024-10-24 19:18:28,532 INFO L125 PetriNetUnfolderBase]: For 428951/428951 co-relation queries the response was YES. [2024-10-24 19:18:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151649 conditions, 16410 events. 11655/16410 cut-off events. For 428951/428951 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 90425 event pairs, 608 based on Foata normal form. 474/16870 useless extension candidates. Maximal degree in co-relation 151048. Up to 5065 conditions per place. [2024-10-24 19:18:28,719 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1827 selfloop transitions, 1067 changer transitions 26/2921 dead transitions. [2024-10-24 19:18:28,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 2921 transitions, 57285 flow [2024-10-24 19:18:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-24 19:18:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-10-24 19:18:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 625 transitions. [2024-10-24 19:18:28,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47241118669690096 [2024-10-24 19:18:28,721 INFO L175 Difference]: Start difference. First operand has 388 places, 1677 transitions, 27308 flow. Second operand 49 states and 625 transitions. [2024-10-24 19:18:28,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 2921 transitions, 57285 flow [2024-10-24 19:18:33,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 2921 transitions, 56282 flow, removed 257 selfloop flow, removed 2 redundant places. [2024-10-24 19:18:33,401 INFO L231 Difference]: Finished difference. Result has 477 places, 2191 transitions, 43122 flow [2024-10-24 19:18:33,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26663, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=43122, PETRI_PLACES=477, PETRI_TRANSITIONS=2191} [2024-10-24 19:18:33,402 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-10-24 19:18:33,402 INFO L471 AbstractCegarLoop]: Abstraction has has 477 places, 2191 transitions, 43122 flow [2024-10-24 19:18:33,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 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) [2024-10-24 19:18:33,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:33,403 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:33,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 19:18:33,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:33,603 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-24 19:18:33,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1203303337, now seen corresponding path program 15 times [2024-10-24 19:18:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650505024] [2024-10-24 19:18:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650505024] [2024-10-24 19:18:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650505024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747287166] [2024-10-24 19:18:33,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:18:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:33,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:33,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 19:18:33,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 19:18:33,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:33,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:18:33,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:33,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747287166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:33,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-24 19:18:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263123139] [2024-10-24 19:18:33,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:33,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:18:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:18:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:18:33,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-24 19:18:33,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 2191 transitions, 43122 flow. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 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) [2024-10-24 19:18:33,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:33,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-24 19:18:33,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand