./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:21:29,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:21:29,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:21:29,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:21:29,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:21:29,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:21:29,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:21:29,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:21:29,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:21:29,374 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:21:29,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:21:29,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:21:29,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:21:29,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:21:29,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:21:29,377 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:21:29,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:29,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:21:29,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:21:29,379 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2025-03-09 01:21:29,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:21:29,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:21:29,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:21:29,587 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:21:29,587 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:21:29,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-03-09 01:21:30,739 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcd80509/be38ecec259840f78458bcb05f8ebefe/FLAG34065268d [2025-03-09 01:21:30,955 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:21:30,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-03-09 01:21:30,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcd80509/be38ecec259840f78458bcb05f8ebefe/FLAG34065268d [2025-03-09 01:21:30,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcd80509/be38ecec259840f78458bcb05f8ebefe [2025-03-09 01:21:30,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:21:30,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:21:30,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:30,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:21:30,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:21:30,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:30" (1/1) ... [2025-03-09 01:21:30,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235e7df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:30, skipping insertion in model container [2025-03-09 01:21:30,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:30" (1/1) ... [2025-03-09 01:21:31,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:21:31,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:31,137 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:21:31,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:31,167 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:21:31,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31 WrapperNode [2025-03-09 01:21:31,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:31,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:31,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:21:31,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:21:31,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,192 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-03-09 01:21:31,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:31,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:21:31,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:21:31,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:21:31,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,219 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]. [2025-03-09 01:21:31,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,222 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:21:31,231 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:21:31,231 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:21:31,231 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:21:31,232 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (1/1) ... [2025-03-09 01:21:31,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:31,254 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) [2025-03-09 01:21:31,256 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 [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:21:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:21:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:21:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:21:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:21:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:21:31,272 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:21:31,329 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:21:31,330 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:21:31,490 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:21:31,490 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:21:31,606 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:21:31,607 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:21:31,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:31 BoogieIcfgContainer [2025-03-09 01:21:31,607 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:21:31,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:21:31,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:21:31,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:21:31,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:21:30" (1/3) ... [2025-03-09 01:21:31,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa5fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:31, skipping insertion in model container [2025-03-09 01:21:31,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:31" (2/3) ... [2025-03-09 01:21:31,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa5fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:31, skipping insertion in model container [2025-03-09 01:21:31,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:31" (3/3) ... [2025-03-09 01:21:31,617 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2025-03-09 01:21:31,627 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:21:31,629 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-dist.wvr.c that has 4 procedures, 25 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-09 01:21:31,629 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:21:31,676 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 01:21:31,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2025-03-09 01:21:31,733 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2025-03-09 01:21:31,736 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:21:31,737 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 3. Compared 16 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. [2025-03-09 01:21:31,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2025-03-09 01:21:31,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-03-09 01:21:31,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:21:31,756 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;@75754402, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:21:31,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-09 01:21:31,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:21:31,769 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-03-09 01:21:31,769 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:21:31,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:31,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:31,770 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:31,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash -664217060, now seen corresponding path program 1 times [2025-03-09 01:21:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:31,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223995890] [2025-03-09 01:21:31,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:31,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:31,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:21:31,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:21:31,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:31,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223995890] [2025-03-09 01:21:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223995890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:32,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:32,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:21:32,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829029278] [2025-03-09 01:21:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:21:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:32,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:21:32,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:21:32,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:32,226 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) [2025-03-09 01:21:32,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:32,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:32,381 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2025-03-09 01:21:32,382 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-03-09 01:21:32,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1784 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. [2025-03-09 01:21:32,389 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2025-03-09 01:21:32,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2025-03-09 01:21:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:21:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:21:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-03-09 01:21:32,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 01:21:32,402 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2025-03-09 01:21:32,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2025-03-09 01:21:32,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:21:32,408 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2025-03-09 01:21:32,410 INFO L262 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} [2025-03-09 01:21:32,415 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2025-03-09 01:21:32,415 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2025-03-09 01:21:32,415 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) [2025-03-09 01:21:32,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:32,415 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:32,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:21:32,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:32,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1383827464, now seen corresponding path program 1 times [2025-03-09 01:21:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:32,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446381363] [2025-03-09 01:21:32,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:32,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:32,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:32,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:32,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:32,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446381363] [2025-03-09 01:21:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446381363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:32,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:32,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:21:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928226217] [2025-03-09 01:21:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:32,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:32,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:32,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:21:32,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:32,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:32,890 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events. [2025-03-09 01:21:32,891 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-03-09 01:21:32,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2512 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place. [2025-03-09 01:21:32,896 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions. [2025-03-09 01:21:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow [2025-03-09 01:21:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:21:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:21:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-03-09 01:21:32,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2025-03-09 01:21:32,900 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 94 transitions. [2025-03-09 01:21:32,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow [2025-03-09 01:21:32,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:32,901 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow [2025-03-09 01:21:32,902 INFO L262 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2025-03-09 01:21:32,902 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2025-03-09 01:21:32,902 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow [2025-03-09 01:21:32,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:32,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:32,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:32,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:21:32,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:32,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:32,905 INFO L85 PathProgramCache]: Analyzing trace with hash 283008850, now seen corresponding path program 1 times [2025-03-09 01:21:32,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772007673] [2025-03-09 01:21:32,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:32,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:32,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:32,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:32,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:32,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:33,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772007673] [2025-03-09 01:21:33,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772007673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:33,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090335747] [2025-03-09 01:21:33,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:33,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:33,053 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) [2025-03-09 01:21:33,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:21:33,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:33,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:33,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:33,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:33,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:21:33,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:33,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:33,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090335747] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:33,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-09 01:21:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335775790] [2025-03-09 01:21:33,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:33,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:21:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:33,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:21:33,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:21:33,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:33,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 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) [2025-03-09 01:21:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:34,081 INFO L124 PetriNetUnfolderBase]: 796/1158 cut-off events. [2025-03-09 01:21:34,081 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2025-03-09 01:21:34,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3748 conditions, 1158 events. 796/1158 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4379 event pairs, 142 based on Foata normal form. 13/1171 useless extension candidates. Maximal degree in co-relation 2112. Up to 371 conditions per place. [2025-03-09 01:21:34,088 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 91 selfloop transitions, 34 changer transitions 0/126 dead transitions. [2025-03-09 01:21:34,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 126 transitions, 784 flow [2025-03-09 01:21:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:21:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:21:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2025-03-09 01:21:34,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2025-03-09 01:21:34,090 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 10 states and 154 transitions. [2025-03-09 01:21:34,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 126 transitions, 784 flow [2025-03-09 01:21:34,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 126 transitions, 762 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:34,099 INFO L231 Difference]: Finished difference. Result has 49 places, 60 transitions, 425 flow [2025-03-09 01:21:34,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=425, PETRI_PLACES=49, PETRI_TRANSITIONS=60} [2025-03-09 01:21:34,100 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-03-09 01:21:34,100 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 60 transitions, 425 flow [2025-03-09 01:21:34,100 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) [2025-03-09 01:21:34,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:34,100 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:34,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:34,300 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 [2025-03-09 01:21:34,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:34,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -191096814, now seen corresponding path program 2 times [2025-03-09 01:21:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919578283] [2025-03-09 01:21:34,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:34,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:34,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:34,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:34,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919578283] [2025-03-09 01:21:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919578283] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475936009] [2025-03-09 01:21:34,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:34,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:34,480 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) [2025-03-09 01:21:34,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:21:34,514 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:34,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:34,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:34,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:34,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:34,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:34,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:34,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475936009] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 12 [2025-03-09 01:21:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752214614] [2025-03-09 01:21:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:34,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:21:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:34,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:21:34,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:21:34,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:34,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 425 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:34,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:34,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:34,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:34,994 INFO L124 PetriNetUnfolderBase]: 1141/1670 cut-off events. [2025-03-09 01:21:34,995 INFO L125 PetriNetUnfolderBase]: For 5136/5136 co-relation queries the response was YES. [2025-03-09 01:21:34,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1670 events. 1141/1670 cut-off events. For 5136/5136 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6701 event pairs, 235 based on Foata normal form. 4/1674 useless extension candidates. Maximal degree in co-relation 4209. Up to 564 conditions per place. [2025-03-09 01:21:35,004 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 107 selfloop transitions, 31 changer transitions 0/139 dead transitions. [2025-03-09 01:21:35,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 139 transitions, 1182 flow [2025-03-09 01:21:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:21:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:21:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-09 01:21:35,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2025-03-09 01:21:35,005 INFO L175 Difference]: Start difference. First operand has 49 places, 60 transitions, 425 flow. Second operand 8 states and 131 transitions. [2025-03-09 01:21:35,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 139 transitions, 1182 flow [2025-03-09 01:21:35,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 139 transitions, 1164 flow, removed 9 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:35,019 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 687 flow [2025-03-09 01:21:35,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=687, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2025-03-09 01:21:35,020 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2025-03-09 01:21:35,020 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 687 flow [2025-03-09 01:21:35,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:35,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:35,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:35,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:35,224 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,SelfDestructingSolverStorable3 [2025-03-09 01:21:35,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:35,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1744392838, now seen corresponding path program 1 times [2025-03-09 01:21:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:35,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-03-09 01:21:35,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:35,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:35,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:35,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:35,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:35,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-03-09 01:21:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723413814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:35,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:21:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027195315] [2025-03-09 01:21:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:35,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:35,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:35,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:21:35,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:35,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 687 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:35,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:35,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:35,618 INFO L124 PetriNetUnfolderBase]: 1195/1771 cut-off events. [2025-03-09 01:21:35,618 INFO L125 PetriNetUnfolderBase]: For 10553/10553 co-relation queries the response was YES. [2025-03-09 01:21:35,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 1771 events. 1195/1771 cut-off events. For 10553/10553 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7344 event pairs, 479 based on Foata normal form. 12/1783 useless extension candidates. Maximal degree in co-relation 6464. Up to 1376 conditions per place. [2025-03-09 01:21:35,631 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 95 selfloop transitions, 27 changer transitions 7/130 dead transitions. [2025-03-09 01:21:35,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 130 transitions, 1341 flow [2025-03-09 01:21:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:21:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:21:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2025-03-09 01:21:35,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2025-03-09 01:21:35,632 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 687 flow. Second operand 7 states and 101 transitions. [2025-03-09 01:21:35,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 130 transitions, 1341 flow [2025-03-09 01:21:35,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 130 transitions, 1321 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:35,648 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 915 flow [2025-03-09 01:21:35,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2025-03-09 01:21:35,649 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2025-03-09 01:21:35,649 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 915 flow [2025-03-09 01:21:35,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:35,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:35,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:35,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:21:35,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:35,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash 441699148, now seen corresponding path program 2 times [2025-03-09 01:21:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-03-09 01:21:35,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:35,654 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:35,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:35,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:35,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:35,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-03-09 01:21:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680439108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209914347] [2025-03-09 01:21:35,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:35,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:35,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:35,827 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) [2025-03-09 01:21:35,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 01:21:35,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:35,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:35,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:35,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:35,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:35,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:36,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209914347] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 15 [2025-03-09 01:21:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824278426] [2025-03-09 01:21:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:36,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:36,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:36,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:21:36,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:36,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 915 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:36,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:36,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:36,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:36,857 INFO L124 PetriNetUnfolderBase]: 1347/2011 cut-off events. [2025-03-09 01:21:36,857 INFO L125 PetriNetUnfolderBase]: For 15220/15220 co-relation queries the response was YES. [2025-03-09 01:21:36,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11496 conditions, 2011 events. 1347/2011 cut-off events. For 15220/15220 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8680 event pairs, 336 based on Foata normal form. 4/2015 useless extension candidates. Maximal degree in co-relation 8367. Up to 726 conditions per place. [2025-03-09 01:21:36,873 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 127 selfloop transitions, 44 changer transitions 1/173 dead transitions. [2025-03-09 01:21:36,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 173 transitions, 1876 flow [2025-03-09 01:21:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2025-03-09 01:21:36,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6008230452674898 [2025-03-09 01:21:36,874 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 915 flow. Second operand 9 states and 146 transitions. [2025-03-09 01:21:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 173 transitions, 1876 flow [2025-03-09 01:21:36,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 173 transitions, 1768 flow, removed 54 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:36,895 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 1227 flow [2025-03-09 01:21:36,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1227, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2025-03-09 01:21:36,895 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2025-03-09 01:21:36,896 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 1227 flow [2025-03-09 01:21:36,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:36,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:36,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:36,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:21:37,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,096 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:37,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1175611566, now seen corresponding path program 2 times [2025-03-09 01:21:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-03-09 01:21:37,097 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:37,101 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:37,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:37,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-03-09 01:21:37,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878172502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:37,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028414830] [2025-03-09 01:21:37,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:37,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:37,251 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) [2025-03-09 01:21:37,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 01:21:37,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,303 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:37,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:21:37,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:37,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:21:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028414830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:37,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:21:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-03-09 01:21:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095107180] [2025-03-09 01:21:37,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:37,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:37,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:37,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 01:21:37,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:37,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 1227 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:37,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:37,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:37,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:37,610 INFO L124 PetriNetUnfolderBase]: 1386/2092 cut-off events. [2025-03-09 01:21:37,610 INFO L125 PetriNetUnfolderBase]: For 17442/17442 co-relation queries the response was YES. [2025-03-09 01:21:37,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12473 conditions, 2092 events. 1386/2092 cut-off events. For 17442/17442 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9442 event pairs, 375 based on Foata normal form. 12/2104 useless extension candidates. Maximal degree in co-relation 11783. Up to 1110 conditions per place. [2025-03-09 01:21:37,625 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 127 selfloop transitions, 32 changer transitions 8/168 dead transitions. [2025-03-09 01:21:37,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 168 transitions, 2082 flow [2025-03-09 01:21:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:21:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:21:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2025-03-09 01:21:37,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2025-03-09 01:21:37,626 INFO L175 Difference]: Start difference. First operand has 86 places, 107 transitions, 1227 flow. Second operand 7 states and 103 transitions. [2025-03-09 01:21:37,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 168 transitions, 2082 flow [2025-03-09 01:21:37,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 168 transitions, 1994 flow, removed 30 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:37,655 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 1323 flow [2025-03-09 01:21:37,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1323, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2025-03-09 01:21:37,656 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2025-03-09 01:21:37,656 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 1323 flow [2025-03-09 01:21:37,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:37,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:37,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:37,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:21:37,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:37,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1643323522, now seen corresponding path program 3 times [2025-03-09 01:21:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-03-09 01:21:37,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:37,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:37,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-03-09 01:21:37,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604942768] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472938997] [2025-03-09 01:21:37,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:37,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:37,998 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) [2025-03-09 01:21:38,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 01:21:38,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:38,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:38,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:38,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:38,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:38,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:38,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:38,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472938997] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:38,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:38,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-03-09 01:21:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282098998] [2025-03-09 01:21:38,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:38,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:21:38,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:38,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:21:38,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:21:38,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:38,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 112 transitions, 1323 flow. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 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) [2025-03-09 01:21:38,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:38,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:38,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:39,240 INFO L124 PetriNetUnfolderBase]: 2015/2991 cut-off events. [2025-03-09 01:21:39,241 INFO L125 PetriNetUnfolderBase]: For 30902/30902 co-relation queries the response was YES. [2025-03-09 01:21:39,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18410 conditions, 2991 events. 2015/2991 cut-off events. For 30902/30902 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13645 event pairs, 478 based on Foata normal form. 36/3027 useless extension candidates. Maximal degree in co-relation 17436. Up to 1951 conditions per place. [2025-03-09 01:21:39,261 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 207 selfloop transitions, 170 changer transitions 2/380 dead transitions. [2025-03-09 01:21:39,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 380 transitions, 4783 flow [2025-03-09 01:21:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 01:21:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-09 01:21:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 334 transitions. [2025-03-09 01:21:39,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2025-03-09 01:21:39,263 INFO L175 Difference]: Start difference. First operand has 95 places, 112 transitions, 1323 flow. Second operand 26 states and 334 transitions. [2025-03-09 01:21:39,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 380 transitions, 4783 flow [2025-03-09 01:21:39,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 380 transitions, 4621 flow, removed 28 selfloop flow, removed 3 redundant places. [2025-03-09 01:21:39,310 INFO L231 Difference]: Finished difference. Result has 129 places, 263 transitions, 3738 flow [2025-03-09 01:21:39,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3738, PETRI_PLACES=129, PETRI_TRANSITIONS=263} [2025-03-09 01:21:39,311 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2025-03-09 01:21:39,311 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 263 transitions, 3738 flow [2025-03-09 01:21:39,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 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) [2025-03-09 01:21:39,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:39,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:39,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:39,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:39,514 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:39,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1149749300, now seen corresponding path program 4 times [2025-03-09 01:21:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850956988] [2025-03-09 01:21:39,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:39,518 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:39,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:39,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:39,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850956988] [2025-03-09 01:21:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850956988] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730985960] [2025-03-09 01:21:39,616 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:39,619 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) [2025-03-09 01:21:39,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 01:21:39,649 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:39,665 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:39,666 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:39,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:39,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:21:39,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:39,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730985960] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:39,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-09 01:21:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149299906] [2025-03-09 01:21:39,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:39,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:21:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:39,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:21:39,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:21:39,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:39,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 263 transitions, 3738 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2025-03-09 01:21:39,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:39,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:39,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:40,646 INFO L124 PetriNetUnfolderBase]: 2618/3912 cut-off events. [2025-03-09 01:21:40,646 INFO L125 PetriNetUnfolderBase]: For 45638/45638 co-relation queries the response was YES. [2025-03-09 01:21:40,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27589 conditions, 3912 events. 2618/3912 cut-off events. For 45638/45638 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 19397 event pairs, 311 based on Foata normal form. 38/3950 useless extension candidates. Maximal degree in co-relation 26971. Up to 1457 conditions per place. [2025-03-09 01:21:40,676 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 317 selfloop transitions, 247 changer transitions 3/568 dead transitions. [2025-03-09 01:21:40,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 568 transitions, 8654 flow [2025-03-09 01:21:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 01:21:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 01:21:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 322 transitions. [2025-03-09 01:21:40,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2025-03-09 01:21:40,678 INFO L175 Difference]: Start difference. First operand has 129 places, 263 transitions, 3738 flow. Second operand 24 states and 322 transitions. [2025-03-09 01:21:40,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 568 transitions, 8654 flow [2025-03-09 01:21:40,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 568 transitions, 7424 flow, removed 615 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:40,851 INFO L231 Difference]: Finished difference. Result has 165 places, 426 transitions, 6217 flow [2025-03-09 01:21:40,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6217, PETRI_PLACES=165, PETRI_TRANSITIONS=426} [2025-03-09 01:21:40,852 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2025-03-09 01:21:40,852 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 426 transitions, 6217 flow [2025-03-09 01:21:40,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2025-03-09 01:21:40,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:40,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:40,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:41,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:41,053 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:41,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 239708084, now seen corresponding path program 5 times [2025-03-09 01:21:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129858460] [2025-03-09 01:21:41,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:41,057 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:41,065 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:41,065 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:41,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129858460] [2025-03-09 01:21:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129858460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037346674] [2025-03-09 01:21:41,181 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:41,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:41,183 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) [2025-03-09 01:21:41,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 01:21:41,212 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:41,226 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:41,226 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:41,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:41,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:41,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:41,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037346674] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 17 [2025-03-09 01:21:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850071291] [2025-03-09 01:21:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:41,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:41,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:41,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:41,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-03-09 01:21:41,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:41,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 426 transitions, 6217 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:41,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:41,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:41,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:42,070 INFO L124 PetriNetUnfolderBase]: 2843/4289 cut-off events. [2025-03-09 01:21:42,071 INFO L125 PetriNetUnfolderBase]: For 58120/58120 co-relation queries the response was YES. [2025-03-09 01:21:42,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30649 conditions, 4289 events. 2843/4289 cut-off events. For 58120/58120 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 21788 event pairs, 415 based on Foata normal form. 4/4281 useless extension candidates. Maximal degree in co-relation 30043. Up to 1599 conditions per place. [2025-03-09 01:21:42,100 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 335 selfloop transitions, 207 changer transitions 1/544 dead transitions. [2025-03-09 01:21:42,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 544 transitions, 8667 flow [2025-03-09 01:21:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2025-03-09 01:21:42,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2025-03-09 01:21:42,102 INFO L175 Difference]: Start difference. First operand has 165 places, 426 transitions, 6217 flow. Second operand 9 states and 142 transitions. [2025-03-09 01:21:42,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 544 transitions, 8667 flow [2025-03-09 01:21:42,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 544 transitions, 7939 flow, removed 304 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:42,378 INFO L231 Difference]: Finished difference. Result has 177 places, 469 transitions, 7038 flow [2025-03-09 01:21:42,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5591, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7038, PETRI_PLACES=177, PETRI_TRANSITIONS=469} [2025-03-09 01:21:42,379 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2025-03-09 01:21:42,379 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 469 transitions, 7038 flow [2025-03-09 01:21:42,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:42,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:42,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:42,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:42,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:42,580 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:42,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1180033846, now seen corresponding path program 3 times [2025-03-09 01:21:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700607121] [2025-03-09 01:21:42,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:42,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:42,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:42,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:42,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:42,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:42,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700607121] [2025-03-09 01:21:42,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700607121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057773489] [2025-03-09 01:21:42,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:42,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:42,709 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) [2025-03-09 01:21:42,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 01:21:42,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:42,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:42,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:42,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:42,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:42,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:42,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057773489] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:43,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-03-09 01:21:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418507168] [2025-03-09 01:21:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:43,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:21:43,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:43,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:21:43,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-09 01:21:43,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:43,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 469 transitions, 7038 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:43,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:43,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:43,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:44,028 INFO L124 PetriNetUnfolderBase]: 3066/4632 cut-off events. [2025-03-09 01:21:44,028 INFO L125 PetriNetUnfolderBase]: For 65493/65493 co-relation queries the response was YES. [2025-03-09 01:21:44,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32859 conditions, 4632 events. 3066/4632 cut-off events. For 65493/65493 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 23998 event pairs, 611 based on Foata normal form. 16/4636 useless extension candidates. Maximal degree in co-relation 32275. Up to 1691 conditions per place. [2025-03-09 01:21:44,071 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 388 selfloop transitions, 192 changer transitions 1/582 dead transitions. [2025-03-09 01:21:44,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 582 transitions, 9291 flow [2025-03-09 01:21:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:21:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:21:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-09 01:21:44,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2025-03-09 01:21:44,073 INFO L175 Difference]: Start difference. First operand has 177 places, 469 transitions, 7038 flow. Second operand 8 states and 131 transitions. [2025-03-09 01:21:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 582 transitions, 9291 flow [2025-03-09 01:21:44,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 582 transitions, 9177 flow, removed 57 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:44,470 INFO L231 Difference]: Finished difference. Result has 189 places, 491 transitions, 7890 flow [2025-03-09 01:21:44,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7890, PETRI_PLACES=189, PETRI_TRANSITIONS=491} [2025-03-09 01:21:44,471 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2025-03-09 01:21:44,471 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 491 transitions, 7890 flow [2025-03-09 01:21:44,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:44,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:44,471 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:44,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 01:21:44,671 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,SelfDestructingSolverStorable10 [2025-03-09 01:21:44,671 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:44,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1250041952, now seen corresponding path program 6 times [2025-03-09 01:21:44,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:44,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550253757] [2025-03-09 01:21:44,672 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:44,676 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:44,685 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:44,685 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:44,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550253757] [2025-03-09 01:21:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550253757] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823411109] [2025-03-09 01:21:44,787 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:44,789 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) [2025-03-09 01:21:44,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 01:21:44,820 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:44,844 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:44,844 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:44,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:44,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:44,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:44,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823411109] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:45,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:45,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-03-09 01:21:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983810575] [2025-03-09 01:21:45,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:45,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:21:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:45,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:21:45,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:21:45,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:45,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 491 transitions, 7890 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 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) [2025-03-09 01:21:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:45,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:46,807 INFO L124 PetriNetUnfolderBase]: 4599/6822 cut-off events. [2025-03-09 01:21:46,807 INFO L125 PetriNetUnfolderBase]: For 107415/107415 co-relation queries the response was YES. [2025-03-09 01:21:46,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50049 conditions, 6822 events. 4599/6822 cut-off events. For 107415/107415 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 37142 event pairs, 519 based on Foata normal form. 41/6847 useless extension candidates. Maximal degree in co-relation 49609. Up to 2387 conditions per place. [2025-03-09 01:21:46,875 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 588 selfloop transitions, 455 changer transitions 1/1045 dead transitions. [2025-03-09 01:21:46,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1045 transitions, 16641 flow [2025-03-09 01:21:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 01:21:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 01:21:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 401 transitions. [2025-03-09 01:21:46,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5304232804232805 [2025-03-09 01:21:46,877 INFO L175 Difference]: Start difference. First operand has 189 places, 491 transitions, 7890 flow. Second operand 28 states and 401 transitions. [2025-03-09 01:21:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1045 transitions, 16641 flow [2025-03-09 01:21:47,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1045 transitions, 16331 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-03-09 01:21:47,513 INFO L231 Difference]: Finished difference. Result has 234 places, 728 transitions, 13454 flow [2025-03-09 01:21:47,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7651, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13454, PETRI_PLACES=234, PETRI_TRANSITIONS=728} [2025-03-09 01:21:47,513 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2025-03-09 01:21:47,513 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 728 transitions, 13454 flow [2025-03-09 01:21:47,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 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) [2025-03-09 01:21:47,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:47,514 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:47,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 01:21:47,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:47,714 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:47,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash -842988080, now seen corresponding path program 3 times [2025-03-09 01:21:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310746365] [2025-03-09 01:21:47,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:47,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:47,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:47,728 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:47,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310746365] [2025-03-09 01:21:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310746365] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43582212] [2025-03-09 01:21:47,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:47,859 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) [2025-03-09 01:21:47,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 01:21:47,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:47,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:47,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:47,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:47,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:21:47,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:47,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:21:47,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43582212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:47,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:21:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-03-09 01:21:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773173639] [2025-03-09 01:21:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:47,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:47,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 01:21:47,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 728 transitions, 13454 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:49,163 INFO L124 PetriNetUnfolderBase]: 4610/6856 cut-off events. [2025-03-09 01:21:49,163 INFO L125 PetriNetUnfolderBase]: For 140477/140477 co-relation queries the response was YES. [2025-03-09 01:21:49,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56512 conditions, 6856 events. 4610/6856 cut-off events. For 140477/140477 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37444 event pairs, 801 based on Foata normal form. 12/6868 useless extension candidates. Maximal degree in co-relation 56025. Up to 3738 conditions per place. [2025-03-09 01:21:49,219 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 715 selfloop transitions, 129 changer transitions 19/864 dead transitions. [2025-03-09 01:21:49,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 864 transitions, 16591 flow [2025-03-09 01:21:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:21:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:21:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2025-03-09 01:21:49,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608465608465608 [2025-03-09 01:21:49,220 INFO L175 Difference]: Start difference. First operand has 234 places, 728 transitions, 13454 flow. Second operand 7 states and 106 transitions. [2025-03-09 01:21:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 864 transitions, 16591 flow [2025-03-09 01:21:50,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 864 transitions, 15496 flow, removed 450 selfloop flow, removed 3 redundant places. [2025-03-09 01:21:50,055 INFO L231 Difference]: Finished difference. Result has 239 places, 725 transitions, 12578 flow [2025-03-09 01:21:50,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12359, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12578, PETRI_PLACES=239, PETRI_TRANSITIONS=725} [2025-03-09 01:21:50,055 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2025-03-09 01:21:50,056 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 725 transitions, 12578 flow [2025-03-09 01:21:50,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:50,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:50,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:50,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:50,256 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,SelfDestructingSolverStorable12 [2025-03-09 01:21:50,256 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:50,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:50,257 INFO L85 PathProgramCache]: Analyzing trace with hash -36369104, now seen corresponding path program 4 times [2025-03-09 01:21:50,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:50,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547580088] [2025-03-09 01:21:50,257 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:50,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:50,259 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:50,267 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:50,267 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:50,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547580088] [2025-03-09 01:21:50,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547580088] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:50,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963213331] [2025-03-09 01:21:50,332 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:50,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:50,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:50,334 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) [2025-03-09 01:21:50,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 01:21:50,362 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:50,379 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:50,380 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:50,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:50,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:21:50,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:50,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:50,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963213331] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2025-03-09 01:21:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528014095] [2025-03-09 01:21:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:50,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:21:50,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:50,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:21:50,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:21:50,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:50,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 725 transitions, 12578 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:50,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:50,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:51,940 INFO L124 PetriNetUnfolderBase]: 5343/7876 cut-off events. [2025-03-09 01:21:51,940 INFO L125 PetriNetUnfolderBase]: For 135018/135018 co-relation queries the response was YES. [2025-03-09 01:21:51,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60776 conditions, 7876 events. 5343/7876 cut-off events. For 135018/135018 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 43173 event pairs, 539 based on Foata normal form. 12/7888 useless extension candidates. Maximal degree in co-relation 60340. Up to 2781 conditions per place. [2025-03-09 01:21:52,030 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 713 selfloop transitions, 240 changer transitions 0/954 dead transitions. [2025-03-09 01:21:52,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 954 transitions, 17748 flow [2025-03-09 01:21:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:21:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:21:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2025-03-09 01:21:52,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-09 01:21:52,031 INFO L175 Difference]: Start difference. First operand has 239 places, 725 transitions, 12578 flow. Second operand 8 states and 132 transitions. [2025-03-09 01:21:52,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 954 transitions, 17748 flow [2025-03-09 01:21:53,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 954 transitions, 17478 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-09 01:21:53,149 INFO L231 Difference]: Finished difference. Result has 243 places, 802 transitions, 15023 flow [2025-03-09 01:21:53,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12308, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15023, PETRI_PLACES=243, PETRI_TRANSITIONS=802} [2025-03-09 01:21:53,150 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2025-03-09 01:21:53,150 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 802 transitions, 15023 flow [2025-03-09 01:21:53,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:53,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:53,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:53,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 01:21:53,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-09 01:21:53,351 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash 652784624, now seen corresponding path program 5 times [2025-03-09 01:21:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379420341] [2025-03-09 01:21:53,351 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:53,355 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:53,359 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:53,359 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:53,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379420341] [2025-03-09 01:21:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379420341] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757234131] [2025-03-09 01:21:53,446 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:53,448 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) [2025-03-09 01:21:53,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 01:21:53,475 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:53,489 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:53,489 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:53,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:53,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:53,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:53,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:53,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757234131] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:53,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:53,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 14 [2025-03-09 01:21:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848746356] [2025-03-09 01:21:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:53,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:21:53,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:53,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:21:53,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:21:53,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:53,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 802 transitions, 15023 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:53,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:53,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:53,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:55,073 INFO L124 PetriNetUnfolderBase]: 5325/7858 cut-off events. [2025-03-09 01:21:55,073 INFO L125 PetriNetUnfolderBase]: For 152800/152800 co-relation queries the response was YES. [2025-03-09 01:21:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 7858 events. 5325/7858 cut-off events. For 152800/152800 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 43110 event pairs, 951 based on Foata normal form. 18/7876 useless extension candidates. Maximal degree in co-relation 62010. Up to 4040 conditions per place. [2025-03-09 01:21:55,144 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 735 selfloop transitions, 135 changer transitions 0/871 dead transitions. [2025-03-09 01:21:55,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 871 transitions, 17343 flow [2025-03-09 01:21:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:21:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:21:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-03-09 01:21:55,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-03-09 01:21:55,145 INFO L175 Difference]: Start difference. First operand has 243 places, 802 transitions, 15023 flow. Second operand 6 states and 93 transitions. [2025-03-09 01:21:55,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 871 transitions, 17343 flow [2025-03-09 01:21:56,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 871 transitions, 17105 flow, removed 43 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:56,298 INFO L231 Difference]: Finished difference. Result has 249 places, 804 transitions, 15154 flow [2025-03-09 01:21:56,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14785, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15154, PETRI_PLACES=249, PETRI_TRANSITIONS=804} [2025-03-09 01:21:56,299 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2025-03-09 01:21:56,299 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 804 transitions, 15154 flow [2025-03-09 01:21:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:56,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:56,300 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:56,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:56,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 01:21:56,501 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:56,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1243719976, now seen corresponding path program 6 times [2025-03-09 01:21:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360714257] [2025-03-09 01:21:56,501 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:56,505 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:56,512 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:56,512 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:56,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360714257] [2025-03-09 01:21:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360714257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864784557] [2025-03-09 01:21:56,594 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:56,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:56,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:56,597 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) [2025-03-09 01:21:56,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 01:21:56,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:56,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:56,641 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:56,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:56,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:21:56,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:56,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:56,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864784557] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:56,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:56,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 12 [2025-03-09 01:21:56,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239803243] [2025-03-09 01:21:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:56,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:21:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:56,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:21:56,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:21:56,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:56,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 804 transitions, 15154 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:56,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:56,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:56,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:58,223 INFO L124 PetriNetUnfolderBase]: 5299/7814 cut-off events. [2025-03-09 01:21:58,224 INFO L125 PetriNetUnfolderBase]: For 149563/149563 co-relation queries the response was YES. [2025-03-09 01:21:58,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62676 conditions, 7814 events. 5299/7814 cut-off events. For 149563/149563 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 42873 event pairs, 904 based on Foata normal form. 22/7836 useless extension candidates. Maximal degree in co-relation 62158. Up to 3720 conditions per place. [2025-03-09 01:21:58,305 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 734 selfloop transitions, 173 changer transitions 0/908 dead transitions. [2025-03-09 01:21:58,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 908 transitions, 18029 flow [2025-03-09 01:21:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:21:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:21:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-03-09 01:21:58,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2025-03-09 01:21:58,306 INFO L175 Difference]: Start difference. First operand has 249 places, 804 transitions, 15154 flow. Second operand 6 states and 91 transitions. [2025-03-09 01:21:58,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 908 transitions, 18029 flow [2025-03-09 01:21:59,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 908 transitions, 17945 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:59,575 INFO L231 Difference]: Finished difference. Result has 256 places, 809 transitions, 15672 flow [2025-03-09 01:21:59,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=15070, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15672, PETRI_PLACES=256, PETRI_TRANSITIONS=809} [2025-03-09 01:21:59,576 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2025-03-09 01:21:59,576 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 809 transitions, 15672 flow [2025-03-09 01:21:59,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-09 01:21:59,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:59,576 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:59,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:59,777 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,SelfDestructingSolverStorable15 [2025-03-09 01:21:59,777 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:59,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:59,778 INFO L85 PathProgramCache]: Analyzing trace with hash -359101148, now seen corresponding path program 7 times [2025-03-09 01:21:59,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:59,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193894811] [2025-03-09 01:21:59,778 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:21:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:59,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:59,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:59,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:59,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:59,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193894811] [2025-03-09 01:21:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193894811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:21:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018637762] [2025-03-09 01:21:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:59,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:21:59,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:59,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:21:59,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:21:59,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 809 transitions, 15672 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:21:59,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:01,236 INFO L124 PetriNetUnfolderBase]: 5296/7811 cut-off events. [2025-03-09 01:22:01,236 INFO L125 PetriNetUnfolderBase]: For 156893/156893 co-relation queries the response was YES. [2025-03-09 01:22:01,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64119 conditions, 7811 events. 5296/7811 cut-off events. For 156893/156893 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 43006 event pairs, 953 based on Foata normal form. 3/7814 useless extension candidates. Maximal degree in co-relation 63586. Up to 4739 conditions per place. [2025-03-09 01:22:01,438 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 798 selfloop transitions, 130 changer transitions 6/935 dead transitions. [2025-03-09 01:22:01,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 935 transitions, 18887 flow [2025-03-09 01:22:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:22:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:22:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2025-03-09 01:22:01,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-09 01:22:01,439 INFO L175 Difference]: Start difference. First operand has 256 places, 809 transitions, 15672 flow. Second operand 7 states and 99 transitions. [2025-03-09 01:22:01,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 935 transitions, 18887 flow [2025-03-09 01:22:02,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 935 transitions, 18801 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:02,816 INFO L231 Difference]: Finished difference. Result has 263 places, 809 transitions, 15856 flow [2025-03-09 01:22:02,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=15567, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15856, PETRI_PLACES=263, PETRI_TRANSITIONS=809} [2025-03-09 01:22:02,817 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2025-03-09 01:22:02,817 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 809 transitions, 15856 flow [2025-03-09 01:22:02,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:02,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:02,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:02,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 01:22:02,818 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:02,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1275615024, now seen corresponding path program 8 times [2025-03-09 01:22:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159568099] [2025-03-09 01:22:02,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:02,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:02,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:02,827 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:02,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159568099] [2025-03-09 01:22:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159568099] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195654139] [2025-03-09 01:22:02,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:02,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:02,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:02,938 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) [2025-03-09 01:22:02,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 01:22:02,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:02,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:02,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:02,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:02,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:02,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:03,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195654139] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:03,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-03-09 01:22:03,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634096323] [2025-03-09 01:22:03,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:03,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:22:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:03,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:22:03,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:22:03,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:03,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 809 transitions, 15856 flow. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 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) [2025-03-09 01:22:03,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:03,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:05,348 INFO L124 PetriNetUnfolderBase]: 6089/9129 cut-off events. [2025-03-09 01:22:05,349 INFO L125 PetriNetUnfolderBase]: For 199586/199586 co-relation queries the response was YES. [2025-03-09 01:22:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76821 conditions, 9129 events. 6089/9129 cut-off events. For 199586/199586 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 53438 event pairs, 746 based on Foata normal form. 39/9168 useless extension candidates. Maximal degree in co-relation 76260. Up to 3327 conditions per place. [2025-03-09 01:22:05,452 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 984 selfloop transitions, 257 changer transitions 4/1246 dead transitions. [2025-03-09 01:22:05,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1246 transitions, 25316 flow [2025-03-09 01:22:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 01:22:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 01:22:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 253 transitions. [2025-03-09 01:22:05,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49317738791423 [2025-03-09 01:22:05,453 INFO L175 Difference]: Start difference. First operand has 263 places, 809 transitions, 15856 flow. Second operand 19 states and 253 transitions. [2025-03-09 01:22:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1246 transitions, 25316 flow [2025-03-09 01:22:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1246 transitions, 25058 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-09 01:22:07,048 INFO L231 Difference]: Finished difference. Result has 290 places, 875 transitions, 17953 flow [2025-03-09 01:22:07,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=15601, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17953, PETRI_PLACES=290, PETRI_TRANSITIONS=875} [2025-03-09 01:22:07,049 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2025-03-09 01:22:07,049 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 875 transitions, 17953 flow [2025-03-09 01:22:07,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 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) [2025-03-09 01:22:07,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:07,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:07,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:07,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:07,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:07,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1021647022, now seen corresponding path program 7 times [2025-03-09 01:22:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248548229] [2025-03-09 01:22:07,251 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:22:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:07,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:22:07,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:07,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:07,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:07,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248548229] [2025-03-09 01:22:07,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248548229] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785516566] [2025-03-09 01:22:07,341 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:22:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:07,343 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) [2025-03-09 01:22:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 01:22:07,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:22:07,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:07,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:07,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:07,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:07,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:07,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785516566] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:22:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 16 [2025-03-09 01:22:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699607403] [2025-03-09 01:22:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:07,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:07,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:07,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:22:07,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:07,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 875 transitions, 17953 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:07,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:07,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:09,211 INFO L124 PetriNetUnfolderBase]: 6055/9054 cut-off events. [2025-03-09 01:22:09,211 INFO L125 PetriNetUnfolderBase]: For 215831/215831 co-relation queries the response was YES. [2025-03-09 01:22:09,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80332 conditions, 9054 events. 6055/9054 cut-off events. For 215831/215831 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 52293 event pairs, 1031 based on Foata normal form. 26/9080 useless extension candidates. Maximal degree in co-relation 79758. Up to 4646 conditions per place. [2025-03-09 01:22:09,316 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 797 selfloop transitions, 175 changer transitions 0/973 dead transitions. [2025-03-09 01:22:09,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 973 transitions, 20887 flow [2025-03-09 01:22:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-03-09 01:22:09,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-03-09 01:22:09,317 INFO L175 Difference]: Start difference. First operand has 290 places, 875 transitions, 17953 flow. Second operand 6 states and 92 transitions. [2025-03-09 01:22:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 973 transitions, 20887 flow [2025-03-09 01:22:11,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 973 transitions, 20425 flow, removed 139 selfloop flow, removed 4 redundant places. [2025-03-09 01:22:11,353 INFO L231 Difference]: Finished difference. Result has 291 places, 874 transitions, 17836 flow [2025-03-09 01:22:11,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17486, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17836, PETRI_PLACES=291, PETRI_TRANSITIONS=874} [2025-03-09 01:22:11,354 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2025-03-09 01:22:11,354 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 874 transitions, 17836 flow [2025-03-09 01:22:11,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:11,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:11,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:11,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 01:22:11,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:11,559 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:11,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1044371262, now seen corresponding path program 9 times [2025-03-09 01:22:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572742464] [2025-03-09 01:22:11,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:11,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:11,566 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:11,566 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:11,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572742464] [2025-03-09 01:22:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572742464] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182367783] [2025-03-09 01:22:11,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:11,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:11,676 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) [2025-03-09 01:22:11,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 01:22:11,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:11,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:11,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:11,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:11,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:11,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:11,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:22:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182367783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:22:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-03-09 01:22:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124148257] [2025-03-09 01:22:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:11,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:11,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:11,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:22:11,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:11,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 874 transitions, 17836 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:11,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:11,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:11,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:13,768 INFO L124 PetriNetUnfolderBase]: 6455/9726 cut-off events. [2025-03-09 01:22:13,768 INFO L125 PetriNetUnfolderBase]: For 234396/234396 co-relation queries the response was YES. [2025-03-09 01:22:13,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86015 conditions, 9726 events. 6455/9726 cut-off events. For 234396/234396 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57775 event pairs, 1579 based on Foata normal form. 54/9780 useless extension candidates. Maximal degree in co-relation 85674. Up to 8170 conditions per place. [2025-03-09 01:22:13,903 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 832 selfloop transitions, 207 changer transitions 10/1050 dead transitions. [2025-03-09 01:22:13,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1050 transitions, 22810 flow [2025-03-09 01:22:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:22:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:22:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2025-03-09 01:22:13,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2025-03-09 01:22:13,904 INFO L175 Difference]: Start difference. First operand has 291 places, 874 transitions, 17836 flow. Second operand 7 states and 95 transitions. [2025-03-09 01:22:13,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1050 transitions, 22810 flow [2025-03-09 01:22:16,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1050 transitions, 22422 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-09 01:22:16,215 INFO L231 Difference]: Finished difference. Result has 298 places, 952 transitions, 19934 flow [2025-03-09 01:22:16,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17474, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19934, PETRI_PLACES=298, PETRI_TRANSITIONS=952} [2025-03-09 01:22:16,216 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2025-03-09 01:22:16,216 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 952 transitions, 19934 flow [2025-03-09 01:22:16,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:16,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:16,216 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:16,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:16,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:16,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:16,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2145675700, now seen corresponding path program 10 times [2025-03-09 01:22:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:16,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136370829] [2025-03-09 01:22:16,422 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:22:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:16,424 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:16,428 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:16,429 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:22:16,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:16,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136370829] [2025-03-09 01:22:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136370829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:16,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:16,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:22:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492101718] [2025-03-09 01:22:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:16,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:16,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:16,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:22:16,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:16,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 952 transitions, 19934 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:16,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:16,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:16,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:18,429 INFO L124 PetriNetUnfolderBase]: 6463/9848 cut-off events. [2025-03-09 01:22:18,429 INFO L125 PetriNetUnfolderBase]: For 237095/237095 co-relation queries the response was YES. [2025-03-09 01:22:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88251 conditions, 9848 events. 6463/9848 cut-off events. For 237095/237095 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 59731 event pairs, 1178 based on Foata normal form. 57/9905 useless extension candidates. Maximal degree in co-relation 87905. Up to 6710 conditions per place. [2025-03-09 01:22:18,572 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 630 selfloop transitions, 428 changer transitions 8/1067 dead transitions. [2025-03-09 01:22:18,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1067 transitions, 23861 flow [2025-03-09 01:22:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2025-03-09 01:22:18,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2025-03-09 01:22:18,573 INFO L175 Difference]: Start difference. First operand has 298 places, 952 transitions, 19934 flow. Second operand 6 states and 85 transitions. [2025-03-09 01:22:18,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1067 transitions, 23861 flow [2025-03-09 01:22:21,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1067 transitions, 23500 flow, removed 94 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:21,289 INFO L231 Difference]: Finished difference. Result has 303 places, 991 transitions, 21772 flow [2025-03-09 01:22:21,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=19540, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=21772, PETRI_PLACES=303, PETRI_TRANSITIONS=991} [2025-03-09 01:22:21,289 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2025-03-09 01:22:21,289 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 991 transitions, 21772 flow [2025-03-09 01:22:21,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:21,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:21,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:21,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 01:22:21,290 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:21,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -988565488, now seen corresponding path program 11 times [2025-03-09 01:22:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383206737] [2025-03-09 01:22:21,290 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:21,292 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:21,296 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:21,296 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:21,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:21,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383206737] [2025-03-09 01:22:21,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383206737] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:21,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522976143] [2025-03-09 01:22:21,366 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:21,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:21,368 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) [2025-03-09 01:22:21,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 01:22:21,394 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:21,426 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:21,426 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:21,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:21,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:21,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:21,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:22:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522976143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:22:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-03-09 01:22:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212792145] [2025-03-09 01:22:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:21,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:21,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:21,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 01:22:21,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:21,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 991 transitions, 21772 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:21,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:21,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:21,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:23,716 INFO L124 PetriNetUnfolderBase]: 6537/10012 cut-off events. [2025-03-09 01:22:23,717 INFO L125 PetriNetUnfolderBase]: For 259319/259319 co-relation queries the response was YES. [2025-03-09 01:22:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93282 conditions, 10012 events. 6537/10012 cut-off events. For 259319/259319 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 61315 event pairs, 778 based on Foata normal form. 36/10048 useless extension candidates. Maximal degree in co-relation 92698. Up to 4022 conditions per place. [2025-03-09 01:22:23,827 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 727 selfloop transitions, 427 changer transitions 12/1167 dead transitions. [2025-03-09 01:22:23,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1167 transitions, 27143 flow [2025-03-09 01:22:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:22:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:22:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-03-09 01:22:23,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2025-03-09 01:22:23,828 INFO L175 Difference]: Start difference. First operand has 303 places, 991 transitions, 21772 flow. Second operand 7 states and 94 transitions. [2025-03-09 01:22:23,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1167 transitions, 27143 flow [2025-03-09 01:22:26,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1167 transitions, 26269 flow, removed 150 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:26,405 INFO L231 Difference]: Finished difference. Result has 311 places, 1009 transitions, 22586 flow [2025-03-09 01:22:26,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=20933, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22586, PETRI_PLACES=311, PETRI_TRANSITIONS=1009} [2025-03-09 01:22:26,406 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2025-03-09 01:22:26,406 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 1009 transitions, 22586 flow [2025-03-09 01:22:26,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:26,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:26,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:26,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 01:22:26,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:26,607 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:26,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1619313306, now seen corresponding path program 12 times [2025-03-09 01:22:26,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:26,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764191653] [2025-03-09 01:22:26,607 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:22:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:26,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:26,614 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:26,614 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:22:26,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:26,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764191653] [2025-03-09 01:22:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764191653] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617622197] [2025-03-09 01:22:26,694 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:22:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:26,696 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) [2025-03-09 01:22:26,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 01:22:26,722 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:26,741 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:26,742 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:22:26,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:26,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:26,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:26,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:22:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617622197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:22:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-03-09 01:22:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565748333] [2025-03-09 01:22:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:26,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:26,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:26,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:22:26,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:26,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1009 transitions, 22586 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:26,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:26,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:26,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:28,954 INFO L124 PetriNetUnfolderBase]: 6521/9971 cut-off events. [2025-03-09 01:22:28,954 INFO L125 PetriNetUnfolderBase]: For 284547/284547 co-relation queries the response was YES. [2025-03-09 01:22:29,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92370 conditions, 9971 events. 6521/9971 cut-off events. For 284547/284547 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 60963 event pairs, 1314 based on Foata normal form. 3/9974 useless extension candidates. Maximal degree in co-relation 91989. Up to 5868 conditions per place. [2025-03-09 01:22:29,059 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 871 selfloop transitions, 227 changer transitions 5/1104 dead transitions. [2025-03-09 01:22:29,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1104 transitions, 25884 flow [2025-03-09 01:22:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:22:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:22:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2025-03-09 01:22:29,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-09 01:22:29,060 INFO L175 Difference]: Start difference. First operand has 311 places, 1009 transitions, 22586 flow. Second operand 7 states and 99 transitions. [2025-03-09 01:22:29,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1104 transitions, 25884 flow [2025-03-09 01:22:31,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1104 transitions, 25113 flow, removed 37 selfloop flow, removed 3 redundant places. [2025-03-09 01:22:31,437 INFO L231 Difference]: Finished difference. Result has 315 places, 1013 transitions, 22440 flow [2025-03-09 01:22:31,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=21820, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=782, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22440, PETRI_PLACES=315, PETRI_TRANSITIONS=1013} [2025-03-09 01:22:31,438 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2025-03-09 01:22:31,438 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 1013 transitions, 22440 flow [2025-03-09 01:22:31,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:31,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:31,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:31,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:31,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:31,638 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:31,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash 258732876, now seen corresponding path program 13 times [2025-03-09 01:22:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454711755] [2025-03-09 01:22:31,639 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:22:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:31,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:22:31,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:31,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:31,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454711755] [2025-03-09 01:22:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454711755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:22:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914998901] [2025-03-09 01:22:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:31,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:22:31,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:31,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:22:31,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:22:31,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:31,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1013 transitions, 22440 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:31,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:31,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:33,975 INFO L124 PetriNetUnfolderBase]: 6635/10232 cut-off events. [2025-03-09 01:22:33,975 INFO L125 PetriNetUnfolderBase]: For 280549/280549 co-relation queries the response was YES. [2025-03-09 01:22:34,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94216 conditions, 10232 events. 6635/10232 cut-off events. For 280549/280549 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 63860 event pairs, 1738 based on Foata normal form. 51/10283 useless extension candidates. Maximal degree in co-relation 93631. Up to 8837 conditions per place. [2025-03-09 01:22:34,096 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 878 selfloop transitions, 229 changer transitions 9/1117 dead transitions. [2025-03-09 01:22:34,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1117 transitions, 26398 flow [2025-03-09 01:22:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:22:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:22:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2025-03-09 01:22:34,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-03-09 01:22:34,097 INFO L175 Difference]: Start difference. First operand has 315 places, 1013 transitions, 22440 flow. Second operand 7 states and 93 transitions. [2025-03-09 01:22:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1117 transitions, 26398 flow [2025-03-09 01:22:37,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1117 transitions, 26010 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-03-09 01:22:37,042 INFO L231 Difference]: Finished difference. Result has 319 places, 1031 transitions, 23160 flow [2025-03-09 01:22:37,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22061, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23160, PETRI_PLACES=319, PETRI_TRANSITIONS=1031} [2025-03-09 01:22:37,043 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2025-03-09 01:22:37,043 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 1031 transitions, 23160 flow [2025-03-09 01:22:37,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2025-03-09 01:22:37,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:37,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:37,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 01:22:37,043 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:37,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash 334158594, now seen corresponding path program 14 times [2025-03-09 01:22:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:37,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188849635] [2025-03-09 01:22:37,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:37,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:37,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:37,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:37,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188849635] [2025-03-09 01:22:37,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188849635] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948313281] [2025-03-09 01:22:37,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:37,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:37,161 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:37,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 01:22:37,188 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:37,208 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:37,208 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:37,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:37,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:22:37,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:37,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:22:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948313281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:37,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:22:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2025-03-09 01:22:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810762892] [2025-03-09 01:22:37,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:37,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 01:22:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:37,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 01:22:37,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:22:37,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:37,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1031 transitions, 23160 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2025-03-09 01:22:37,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:37,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:37,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:40,069 INFO L124 PetriNetUnfolderBase]: 6617/10235 cut-off events. [2025-03-09 01:22:40,069 INFO L125 PetriNetUnfolderBase]: For 276236/276236 co-relation queries the response was YES. [2025-03-09 01:22:40,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94436 conditions, 10235 events. 6617/10235 cut-off events. For 276236/276236 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 64158 event pairs, 1136 based on Foata normal form. 15/10250 useless extension candidates. Maximal degree in co-relation 94127. Up to 4219 conditions per place. [2025-03-09 01:22:40,184 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 663 selfloop transitions, 445 changer transitions 7/1116 dead transitions. [2025-03-09 01:22:40,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1116 transitions, 26369 flow [2025-03-09 01:22:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:22:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:22:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2025-03-09 01:22:40,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-09 01:22:40,185 INFO L175 Difference]: Start difference. First operand has 319 places, 1031 transitions, 23160 flow. Second operand 8 states and 120 transitions. [2025-03-09 01:22:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1116 transitions, 26369 flow [2025-03-09 01:22:42,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1116 transitions, 25842 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-03-09 01:22:42,769 INFO L231 Difference]: Finished difference. Result has 323 places, 1028 transitions, 23476 flow [2025-03-09 01:22:42,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22612, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23476, PETRI_PLACES=323, PETRI_TRANSITIONS=1028} [2025-03-09 01:22:42,770 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2025-03-09 01:22:42,770 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 1028 transitions, 23476 flow [2025-03-09 01:22:42,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2025-03-09 01:22:42,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:42,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:42,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:42,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:42,972 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:42,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1679452816, now seen corresponding path program 15 times [2025-03-09 01:22:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:42,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286542844] [2025-03-09 01:22:42,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:42,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:42,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:42,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:42,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286542844] [2025-03-09 01:22:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286542844] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237270879] [2025-03-09 01:22:43,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:43,053 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:43,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 01:22:43,079 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:43,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:43,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:43,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:43,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:43,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:43,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237270879] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:43,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:43,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2025-03-09 01:22:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731659974] [2025-03-09 01:22:43,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:43,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:22:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:43,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:22:43,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:22:43,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:43,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1028 transitions, 23476 flow. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 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) [2025-03-09 01:22:43,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:43,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:43,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:46,016 INFO L124 PetriNetUnfolderBase]: 6822/10527 cut-off events. [2025-03-09 01:22:46,016 INFO L125 PetriNetUnfolderBase]: For 302028/302028 co-relation queries the response was YES. [2025-03-09 01:22:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98818 conditions, 10527 events. 6822/10527 cut-off events. For 302028/302028 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 66283 event pairs, 818 based on Foata normal form. 16/10543 useless extension candidates. Maximal degree in co-relation 98602. Up to 3807 conditions per place. [2025-03-09 01:22:46,154 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1058 selfloop transitions, 353 changer transitions 0/1412 dead transitions. [2025-03-09 01:22:46,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1412 transitions, 33259 flow [2025-03-09 01:22:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:22:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:22:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 244 transitions. [2025-03-09 01:22:46,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2025-03-09 01:22:46,156 INFO L175 Difference]: Start difference. First operand has 323 places, 1028 transitions, 23476 flow. Second operand 18 states and 244 transitions. [2025-03-09 01:22:46,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1412 transitions, 33259 flow [2025-03-09 01:22:48,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1412 transitions, 32255 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-03-09 01:22:49,017 INFO L231 Difference]: Finished difference. Result has 342 places, 1082 transitions, 24944 flow [2025-03-09 01:22:49,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22554, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=24944, PETRI_PLACES=342, PETRI_TRANSITIONS=1082} [2025-03-09 01:22:49,018 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2025-03-09 01:22:49,018 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 1082 transitions, 24944 flow [2025-03-09 01:22:49,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 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) [2025-03-09 01:22:49,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:49,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:49,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:49,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-09 01:22:49,218 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2025753068, now seen corresponding path program 8 times [2025-03-09 01:22:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110155884] [2025-03-09 01:22:49,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:49,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:49,229 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:49,229 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:49,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110155884] [2025-03-09 01:22:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110155884] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735229502] [2025-03-09 01:22:49,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:49,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:49,351 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:49,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 01:22:49,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:22:49,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:49,404 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:49,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:49,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:22:49,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735229502] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:49,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:49,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2025-03-09 01:22:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912784123] [2025-03-09 01:22:49,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:49,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 01:22:49,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:49,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 01:22:49,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-03-09 01:22:49,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:49,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1082 transitions, 24944 flow. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) [2025-03-09 01:22:49,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:49,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:49,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:57,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:05,523 INFO L124 PetriNetUnfolderBase]: 7706/11923 cut-off events. [2025-03-09 01:23:05,523 INFO L125 PetriNetUnfolderBase]: For 348093/348093 co-relation queries the response was YES. [2025-03-09 01:23:05,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111587 conditions, 11923 events. 7706/11923 cut-off events. For 348093/348093 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 77231 event pairs, 1303 based on Foata normal form. 24/11947 useless extension candidates. Maximal degree in co-relation 111118. Up to 5799 conditions per place.